The best roof underlayment for most projects is ZIP System Peel-and-Stick Roof Underlayment, which stands out for its self-adhering application and protective role beneath finished roofing. For large roof areas, DuPont Roof Protector offers a broad synthetic roll, while Grip-Rite ShingleLayment HT is a more targeted choice for high-temperature applications. The main tradeoffs are self-adhering protection versus easier-to-handle synthetic sheets, along with coverage, roof compatibility, and installation demands. No single roll suits every roof, climate, or roofing material. Read on for the full breakdown and guidance on matching an underlayment to your project.
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Key Takeaways
- ZIP System Peel-and-Stick is the overall pick for buyers seeking self-adhering coverage, while its application requirements make it less of a default choice for every roof.
- DuPont Roof Protector stands out among the listed synthetic options for its 42-inch-by-286-foot roll, a format that may reduce roll changes on larger jobs.
- Grip-Rite ShingleLayment HT has a distinct high-temperature focus; buyers should check whether the roof assembly and local conditions call for that specialty.
- Several options share a 48-inch-by-250-foot roll format, including ArmorLay 25, ApxRoufin, BlackKnight, SIPA, and Interwrap, so differences in product specifications and installation guidance matter more than dimensions alone.
- The short MYOYAY and GOOFCXO self-adhesive rolls, plus the Pushglossy 50-mil EPDM membrane, suit more limited or specialized applications than whole-roof coverage.
| ZIP System Peel-and-Stick Roof Underlayment, Standard Temperature |  | Best for Full-Deck Waterproofing | Manufacturer: Huber Engineered Woods | Model: Standard Temp | Part number: S-20036 | VIEW LATEST PRICE | See Our Full Breakdown |
| Zeluga 32-390 Synthetic Roofing Underlayment, 48 in. x 250 ft., 95 GSM |  | Best for Large-Roof Coverage | Manufacturer: Zeluga | Model: 32-390 | Material: Woven polypropylene | VIEW LATEST PRICE | See Our Full Breakdown |
| MYOYAY Self-Adhesive Waterproof Roofing Membrane, 39 in x 16.4 ft, White |  | Best for Small Custom Repairs | Material: Rubber with aluminum foil layer | Roll size: 39 in. x 16.4 ft. | Dimensions: 196.8 x 39 x 0.06 in. | VIEW LATEST PRICE | See Our Full Breakdown |
| Grip-Rite ShingleLayment HT Synthetic Roofing Underlayment, 3 ft. x 67 ft. |  | Best for Hot-Roof Conditions | Manufacturer: Grip-Rite | Model: SL2SQHT | Material: Polypropylene | VIEW LATEST PRICE | See Our Full Breakdown |
| GOOFCXO Self-Adhesive Waterproof Roofing Membrane Roll, 39 in x 16.4 ft |  | Best for No-Heat Patching | Brand: GOOFCXO | Model number: USC13-40893 | Dimensions: 39 in. x 16.4 ft. | VIEW LATEST PRICE | See Our Full Breakdown |
| ArmorLay 25 Synthetic Roof Underlayment, 4 ft x 250 ft |  | Best for Steep-Slope Walkability | Roll dimensions: 4 ft x 250 ft | Coverage: 1,000 sq ft | Material: Polyvinyl chloride (PVC) | VIEW LATEST PRICE | See Our Full Breakdown |
| MYOYAY Self-Adhesive Waterproof Roofing Roll, 39 in x 32.8 ft, White | | Best for Targeted Waterproof Repairs | Roll size: 39 in x 32.8 ft | Dimensions: 393 x 39 x 0.06 in | Weight: 12.19 lb | VIEW LATEST PRICE | See Our Full Breakdown |
| Pushglossy Self-Adhesive EPDM Rubber Roofing Membrane, 50 Mil, 39 in x 10 ft, Black |  | Best for Compact, Detailed Sealing | Material: Vulcanized EPDM rubber | Thickness: 50 mil | Dimensions: 39 in x 10 ft | VIEW LATEST PRICE | See Our Full Breakdown |
| MYOYAY Self-Adhesive Waterproof Roofing Membrane Roll, 39 in x 16.4 ft, Gray |  | Best Mid-Length Repair Roll | Roll size: 39 in x 16.4 ft | Dimensions: 196.8 x 39 x 0.06 in | Weight: 6.4 lb | VIEW LATEST PRICE | See Our Full Breakdown |
| DuPont Roof Protector Synthetic Roofing Underlayment Roll, 42 in. x 286 ft. |  | Best Premium Full-Roof Synthetic | Roll width: 3.5 ft | Roll length: 286 ft | Roll coverage: 10 squares | VIEW LATEST PRICE | See Our Full Breakdown |
| ApxRoufin Synthetic Roofing Underlayment Roll, 48 in x 250 ft |  | Best for Broad Roof Compatibility | Dimensions: 48 in x 250 ft | Coverage: 1,000 sq ft | Material: Polypropylene | VIEW LATEST PRICE | See Our Full Breakdown |
| BlackKnight 4 ft x 250 ft Synthetic Roofing Underlayment |  | Best for Extended UV Exposure | Dimensions: 4 ft x 250 ft | Coverage: 1,000 sq ft (10 squares) | Layers: 4 | VIEW LATEST PRICE | See Our Full Breakdown |
| Grip-Rite ShingleLayment-LWE Synthetic Roofing Underlayment, 4 ft. x 250 ft. |  | Best for Long Project Windows | Dimensions: 4 ft x 250 ft | Coverage: 1,000 sq ft | Material: Woven polypropylene | VIEW LATEST PRICE | See Our Full Breakdown |
| SIPA 100 GSM Synthetic Waterproof Roof Underlayment, 48 in. x 250 ft. |  | Best for Residential and Commercial Roofs | Dimensions: 48 in x 250 ft | Coverage: 1,000 sq ft | Material: Non-woven PP laminated with PE and UV- and water-resistant adhesive | VIEW LATEST PRICE | See Our Full Breakdown |
| Interwrap Roof Underlayment, 48 in x 250 ft |  | Best for Hail and Temperature Range | Dimensions: 48 in x 250 ft | Model: UDL25 | Material: Plastic | VIEW LATEST PRICE | See Our Full Breakdown |
| roof underlayment | Material | Weight | Dimensions | Color |
|---|---|---|---|---|
| ZIP System Peel-and-Stick Roof | — | 51 lb | 10 x 10 x 38 in. | Black adhesive, dark gray backer |
| Zeluga 32-390 Synthetic Roofin | Woven polypropylene | 95 GSM; product weight 18.56 lb | — | — |
| MYOYAY Self-Adhesive Waterproo | Rubber with aluminum foil layer | 7.15 lb | 196.8 x 39 x 0.06 in. | White |
| Grip-Rite ShingleLayment HT Sy | Polypropylene | 28 lb | — | White |
| GOOFCXO Self-Adhesive Waterpro | — | — | 39 in. x 16.4 ft. | Grey |
| ArmorLay 25 Synthetic Roof Und | Polyvinyl chloride (PVC) | — | — | Gray |
| MYOYAY Self-Adhesive Waterproo | Rubber backing with aluminum foil layer | 12.19 lb | 393 x 39 x 0.06 in | White |
| Pushglossy Self-Adhesive EPDM | Vulcanized EPDM rubber | — | 39 in x 10 ft | Black |
| MYOYAY Self-Adhesive Waterproo | Rubber with aluminum foil layer | 6.4 lb | 196.8 x 39 x 0.06 in | Gray |
| DuPont Roof Protector Syntheti | Synthetic, woven polypropylene | 19 lb | — | — |
| ApxRoufin Synthetic Roofing Un | Polypropylene | 18.36 lb | 48 in x 250 ft | — |
| BlackKnight 4 ft x 250 ft Synt | — | 23.6 lb | 4 ft x 250 ft | Black |
| Grip-Rite ShingleLayment-LWE S | Woven polypropylene | 18.5 lb | 4 ft x 250 ft | — |
| SIPA 100 GSM Synthetic Waterpr | Non-woven PP laminated with PE and UV- and water-resistant adhesive | 21.1 lb | 48 in x 250 ft | Gray |
| Interwrap Roof Underlayment | Plastic | — | 48 in x 250 ft | — |
More Details on Our Top Picks
ZIP System Peel-and-Stick Roof Underlayment, Standard Temperature
For buyers who want an adhesive membrane across the roof deck rather than a mechanically fastened synthetic layer, ZIP System stands out for its rubberized asphalt construction and coverage that includes vulnerable areas such as eaves and valleys. Its nail-seal feature is intended to help limit water intrusion around fasteners, a different approach from the mechanically attached Zeluga 32-390, which emphasizes broad coverage and installation markings. The slip-resistant surface also addresses footing during installation, though it does not remove the need for safe-roofing precautions. The strongest case is for a roof already built with compatible ZIP System sheathing and tape, where the stated 30-year system guarantee may apply. That guarantee is conditional, and the heavier roll is less convenient to handle than Zeluga’s lighter synthetic option.
Pros:- Rubberized asphalt membrane forms a waterproof barrier across the roof deck.
- Designed for full-deck coverage, including eaves and valleys.
- Nail-seal feature helps limit water intrusion around fasteners.
- Slip-resistant surface supports footing during installation.
Cons:- The 30-year guarantee depends on use with compatible ZIP System sheathing and tape.
- At 51 pounds, the roll is comparatively heavy to transport and position.
- Adhesive application can be less convenient than mechanically fastening a synthetic roll.
Best for: Roofers and homeowners installing a full-deck adhesive barrier over compatible ZIP System sheathing who want added protection at eaves, valleys, and fastener points.
Not ideal for: Buyers seeking a lightweight, mechanically fastened underlayment for a large roof, or anyone expecting the 30-year guarantee without compatible ZIP System sheathing and tape.
- Manufacturer:Huber Engineered Woods
- Model:Standard Temp
- Part number:S-20036
- Weight:51 lb
- Dimensions:10 x 10 x 38 in.
- Application:Roof underlayment
- Color:Black adhesive, dark gray backer
- Package quantity:1
Our verdict“Choose ZIP System when full-deck adhesive protection and compatibility with ZIP System components matter more than lightweight handling.”
Zeluga 32-390 Synthetic Roofing Underlayment, 48 in. x 250 ft., 95 GSM
Zeluga’s main advantage is efficient coverage: each 48-inch by 250-foot roll covers 1,000 square feet, making it a practical choice for shingle projects where broad secondary protection matters more than a peel-and-stick seal. Unlike the ZIP System membrane, it requires mechanical attachment, so it does not provide the same adhesive barrier or stated nail-seal approach. In return, the 18.56-pound roll is easier to handle and its printed overlap and nail guides can help crews keep installation consistent. The slip-resistant coating and up to 180 days of UV resistance add flexibility if roofing work is staged. That exposure allowance is still finite, and the product is a secondary layer under shingles, not a substitute for correct flashing or roof detailing.
Pros:- Covers 1,000 square feet per roll for efficient large-area installation.
- Woven polypropylene construction is described as tear-resistant.
- Printed nail and overlap guides support consistent placement.
- Slip-resistant surface and up to 180 days of UV resistance provide practical installation flexibility.
Cons:- Requires mechanical attachment rather than forming an adhesive bond to the deck.
- UV resistance is limited to a maximum of 180 days.
- As a secondary underlayment, it still depends on correct shingles, flashing, and roof detailing.
Best for: Roofing crews and hands-on homeowners covering a sizable shingle roof who want a lightweight synthetic roll with installation guides and documented code approvals.
Not ideal for: Buyers who need a self-adhering waterproof membrane for eaves, valleys, or repairs, or projects that may leave underlayment exposed beyond its 180-day UV limit.
- Manufacturer:Zeluga
- Model:32-390
- Material:Woven polypropylene
- Weight:95 GSM; product weight 18.56 lb
- Roll size:48 in. x 250 ft.
- Coverage:1,000 sq. ft. (10 squares)
- UV resistance:Up to 180 days
- Standards and approvals:ICC-ES ESR-5197, AC188, ASTM D8257, CAN/CSA A123.3; Florida FL-17194 and Texas T.D.I. approvals
Our verdict“Pick Zeluga for efficient, mechanically fastened coverage on a shingle roof, not for the adhesive sealing approach offered by ZIP System.”
MYOYAY Self-Adhesive Waterproof Roofing Membrane, 39 in x 16.4 ft, White
This MYOYAY roll is better suited to targeted sealing than to underlayment for an entire roof: its 39-inch by 16.4-foot format can be cut to fit a repair area, flashing detail, or short section where a full-length roll would be unwieldy. The self-adhesive rubber backing is designed for application across several surfaces, while the white aluminum-foil layer reflects heat—features not offered by the large-format, mechanically fastened Zeluga 32-390. The tradeoff is limited coverage, so multiple rolls would be needed for broad roof-deck work. Application also depends on a clean surface and firmly pressed, overlapping seams; careless seam work can leave paths for water. I’d treat it as a repair-oriented membrane, not a direct replacement for a code-approved full-roof underlayment system.
Pros:- Self-adhesive backing allows application without separate mechanical fastening.
- Compact roll can be cut to fit repair areas and roof details.
- Aluminum-foil layer is designed to reflect heat.
- Listed for use on metal, wood, concrete, tile, and other surfaces.
Cons:- A 16.4-foot roll offers limited coverage for full-deck projects.
- Surface must be clean, and the membrane needs firm pressure for adhesion.
- Seams must overlap correctly to help prevent water penetration.
Best for: Homeowners handling a small roof leak or custom patch who need a cut-to-size, self-adhesive membrane for a compatible clean surface.
Not ideal for: Roofers covering a large deck or buyers seeking a documented full-roof underlayment with stated code approvals and broad roll coverage.
- Material:Rubber with aluminum foil layer
- Roll size:39 in. x 16.4 ft.
- Dimensions:196.8 x 39 x 0.06 in.
- Weight:7.15 lb
- Color:White
- Installation:Self-adhesive
- Compatible surfaces:Metal, wood, concrete, tile, and other surfaces
Our verdict“Choose this MYOYAY membrane for small, custom patches where cut-to-fit adhesive coverage matters more than full-roof roll efficiency.”
Grip-Rite ShingleLayment HT Synthetic Roofing Underlayment, 3 ft. x 67 ft.
Grip-Rite ShingleLayment HT pairs a self-adhering polypropylene layer with a design intended for high-temperature conditions, making it the more targeted pick when heat resistance matters more than covering a large deck with a few rolls. Its textured top and slip-resistant base support handling, while the stated 180-day UV exposure allowance gives a project some scheduling room. Compared with Zeluga 32-390, Grip-Rite bonds to the roof deck rather than relying on mechanical attachment, but its 201-square-foot roll covers far less area than Zeluga’s 1,000-square-foot roll. That smaller format can suit detail work or staged installation, yet it means more roll handling across a large roof. The product also weighs 28 pounds and is supplied in only one listed size.
Pros:- Self-adhering installation bonds the underlayment to the roof deck.
- Designed for high-temperature conditions and moisture protection.
- Textured top and slip-resistant base support traction and handling.
- UV-treated surface allows up to 180 days of outdoor exposure.
Cons:- The 201-square-foot roll covers much less area than Zeluga 32-390.
- At 28 pounds, it is heavy relative to its coverage.
- Only one roll size is listed, limiting project-size flexibility.
Best for: Roofers working on heat-exposed roof assemblies who prefer a self-adhering synthetic underlayment and need traction-focused surfaces during installation.
Not ideal for: Buyers seeking lightweight, high-coverage rolls for a large roof or a choice of roll sizes to match different project scales.
- Manufacturer:Grip-Rite
- Model:SL2SQHT
- Material:Polypropylene
- Size:3 ft. x 67 ft.
- Coverage:201 sq. ft.
- Weight:28 lb
- Color:White
- Installation:Self-adhering, peel-and-stick
- UV exposure:Up to 180 days
Our verdict“Choose Grip-Rite HT when a self-adhering, heat-oriented membrane is the priority and its smaller roll coverage suits the job.”
GOOFCXO Self-Adhesive Waterproof Roofing Membrane Roll, 39 in x 16.4 ft
GOOFCXO is a compact repair membrane for buyers who want a peel-and-press application without a heating device. Its polyethylene waterproof layer, geotextile fabric, and polymer adhesive film make it distinct from the rubber-and-foil MYOYAY roll: GOOFCXO centers on a layered, flexible membrane, while MYOYAY adds a reflective foil face. Both have the same stated 39-inch by 16.4-foot dimensions, so neither is a sensible substitute for the large-area coverage of Zeluga 32-390 on a full roof. This product is intended for metal, plastic, and other roof types and is designed to stay flexible through weather and temperature changes. Application remains surface-dependent: dirt can interfere with adhesion, and the provided data does not specify coverage beyond the roll dimensions or code approvals.
Pros:- Peel-and-press installation requires no heating device.
- Layered construction combines polyethylene, geotextile fabric, and polymer adhesive film.
- Designed for use on several roof materials and building types.
- Designed to remain flexible through weather and temperature changes.
Cons:- The 16.4-foot roll is better suited to repairs than full-roof coverage.
- Application requires a clean surface free of dirt.
- The supplied product data does not list code approvals or a separate UV exposure limit.
Best for: DIYers making a localized roof repair on a clean metal, plastic, or other compatible surface who want to avoid heating equipment.
Not ideal for: Installers covering a full roof deck, buyers who need stated code approvals, or anyone unable to prepare a clean surface for reliable adhesion.
- Brand:GOOFCXO
- Model number:USC13-40893
- Dimensions:39 in. x 16.4 ft.
- Materials:High-density polyethylene, geotextile fabric, and polymer adhesive film
- Installation:Self-adhesive; no heating device required
- Color:Grey
- Quantity:1
- Included components:Self-adhesive roofing membrane
Our verdict“Choose GOOFCXO for a small, no-heat roof patch on a prepared surface, not for a full-deck underlayment installation.”
ArmorLay 25 Synthetic Roof Underlayment, 4 ft x 250 ft
ArmorLay 25 suits roofers who want a full-size synthetic layer with added grip while working on steeper slopes. Its textured, slip-resistant surface addresses a practical installation concern that basic water-resistant underlayments may not: footing on the roof deck. One roll covers 1,000 square feet, and its stated ASTM D4869 and ASTM D226 compliance gives buyers performance standards to check against project requirements. Compared with DuPont Roof Protector, ArmorLay offers a shorter roll and a stated 60-day UV exposure window; DuPont lists four-layer construction and 10 squares of coverage. ArmorLay is designed to resist buckling, warping, and cracking, but it is not a substitute for a roof system’s specified membrane, and its limited exposure period makes prompt roofing work important.
Pros:- Covers 1,000 square feet per roll
- Textured bottom is designed to support walkability on steep slopes
- Meets ASTM D4869 and ASTM D226 performance standards
- Designed to resist buckling, warping, and cracking
Cons:- UV exposure is limited to 60 days
- Water-resistant construction is not described as a fully waterproof peel-and-stick membrane
Best for: Roofing crews installing a steep-slope roof who want a textured synthetic underlayment and can cover it within the stated UV window.
Not ideal for: Projects likely to leave the roof exposed beyond 60 days, or buyers whose plans require a specific underlayment material or listed installation system.
- Roll dimensions:4 ft x 250 ft
- Coverage:1,000 sq ft
- Material:Polyvinyl chloride (PVC)
- Water resistance:Water resistant
- UV exposure:Up to 60 days
- Standards:ASTM D4869 and ASTM D226
- Color:Gray
Our verdict“Choose ArmorLay 25 for a steep-slope installation where grip and broad roll coverage matter more than a longer stated exposure window.”
MYOYAY Self-Adhesive Waterproof Roofing Roll, 39 in x 32.8 ft, White
This MYOYAY roll is aimed at localized sealing jobs rather than covering an entire roof deck. Its rubber backing and aluminum foil layer form a self-adhesive barrier that can be cut for cracks, dormers, porches, and other small areas; that makes it more suited to patching and detail work than ArmorLay 25’s 1,000-square-foot synthetic roll. The longer 32.8-foot length also gives it more reach than the 10-foot Pushglossy EPDM membrane, though the products use different materials and should not be treated as interchangeable. Installation depends on a clean surface and firm pressure, while overlapping seams help limit water entry. Buyers should check compatibility with their roofing surface and use the membrane for the intended repair, not assume the listing establishes suitability as a full-roof underlayment system.
Pros:- Peel-and-stick application can simplify localized sealing
- Can be cut to fit repairs and irregular details
- Rubber backing and aluminum foil layer are designed for waterproofing and weather protection
- Longer roll than the 10-foot Pushglossy EPDM option
Cons:- Requires a clean surface and firm pressing for adhesion
- Seams need adequate overlap to help resist water penetration
- Limited roll length makes it impractical for broad roof-deck coverage
Best for: Homeowners or contractors sealing limited roof areas, dormers, porch roofs, or cracks who need a cut-to-size self-adhesive roll.
Not ideal for: Anyone underlaying a large roof deck or needing a clearly specified full-roof system; this roll covers a much smaller area than synthetic underlayment rolls.
- Roll size:39 in x 32.8 ft
- Dimensions:393 x 39 x 0.06 in
- Weight:12.19 lb
- Material:Rubber backing with aluminum foil layer
- Installation:Self-adhesive
- Color:White
Our verdict“Pick this MYOYAY roll for small waterproofing jobs where cut-to-size application matters more than full-roof coverage.”
Pushglossy Self-Adhesive EPDM Rubber Roofing Membrane, 50 Mil, 39 in x 10 ft, Black
Pushglossy is the most compact choice in this group, built for short runs and awkward details rather than broad underlayment coverage. Its 50-mil vulcanized EPDM sheet and butyl adhesive backing are intended to seal surfaces such as skylights, gutters, sheds, and HVAC areas; its flexibility can help it conform around edges where a large roll like DuPont Roof Protector is not the right tool. The tradeoff is scale: at 39 inches by 10 feet, one roll covers far less area than either DuPont’s 10-square roll or MYOYAY’s 32.8-foot membrane. Its weather and UV resistance are useful qualities for exposed sealing applications, but adhesion still depends on surface preparation and material compatibility. I would treat this as a repair membrane, not a substitute for a full-roof underlayment plan.
Pros:- 50-mil EPDM membrane with butyl rubber adhesive backing
- Flexible sheet is suited to edges and irregular surfaces
- Designed for UV and changing-weather resistance
- Can bond to wood, metal, concrete, and other compatible surfaces
Cons:- A 39 in x 10 ft roll covers a limited area
- Adhesion depends on clean preparation and surface compatibility
- A compact repair membrane is not a replacement for full-roof underlayment coverage
Best for: Roofers or property owners sealing compact areas around skylights, gutters, HVAC equipment, sheds, or roof edges.
Not ideal for: Buyers covering a full roof deck or long repair runs; the 10-foot roll has limited coverage and surface compatibility affects bonding.
- Material:Vulcanized EPDM rubber
- Thickness:50 mil
- Dimensions:39 in x 10 ft
- Adhesive:Butyl rubber backing
- Color:Black
- Item weight:11.57 lb
- Model number:MUY-Pushglossy-0724
Our verdict“Choose Pushglossy for small, detailed sealing work where a flexible EPDM patch is more useful than a long underlayment roll.”
MYOYAY Self-Adhesive Waterproof Roofing Membrane Roll, 39 in x 16.4 ft, Gray
This gray MYOYAY membrane fits between a compact patch and a long repair roll: its 16.4-foot length gives more reach than Pushglossy’s 10-foot EPDM sheet, while remaining easier to handle for small jobs than a full-deck synthetic roll. The rubber and aluminum foil construction is designed to create a water barrier and reflect heat, and the self-adhesive format allows the sheet to be cut to size. That flexibility makes it a practical candidate for roof leaks and other limited-area applications, not a direct alternative to DuPont Roof Protector beneath an entire shingle or metal roof. The surface must be cleaned before application, and seams need overlap for better protection. Buyers should plan the layout carefully: the narrower, shorter roll can require multiple pieces on larger repairs.
Pros:- Self-adhesive roll can be cut to fit repair areas
- Rubber and aluminum foil layers are designed to form a waterproof barrier
- Aluminum foil layer offers heat reflection
- More length than the 10-foot Pushglossy membrane
Cons:- Requires a clean surface for installation
- Seams need to overlap to help prevent water entry
- Coverage remains limited compared with full-size synthetic underlayment rolls
Best for: DIY repairers and roofing contractors handling moderate-size leak patches or short roof details who want a cuttable, self-adhesive membrane.
Not ideal for: Projects requiring full roof-deck coverage, or installers who cannot prepare a clean surface and maintain overlapping seams.
- Roll size:39 in x 16.4 ft
- Dimensions:196.8 x 39 x 0.06 in
- Weight:6.4 lb
- Material:Rubber with aluminum foil layer
- Installation:Self-adhesive
- Color:Gray
- Model:USY7-40893
Our verdict“Choose this MYOYAY roll for medium-length patching jobs that need more reach than a compact membrane but not full-roof coverage.”
DuPont Roof Protector Synthetic Roofing Underlayment Roll, 42 in. x 286 ft.
DuPont Roof Protector is the strongest fit here for buyers seeking a purpose-built synthetic underlayment across a steep-slope roof. Its four-layer construction combines woven polypropylene scrim for strength with a laminated layer intended to block water, while textured surfaces support grip during installation. The stated 10-square coverage and 286-foot roll length make it a more efficient full-roof option than ArmorLay 25’s 1,000-square-foot roll, though ArmorLay specifically lists ASTM D4869 and D226 compliance and a textured bottom. DuPont is intended for asphalt shingles or metal roofing on steep slopes, so it is less flexible as a general repair material than the self-adhesive MYOYAY and Pushglossy rolls. Its listing does not specify UV exposure duration, so buyers should confirm exposure limits and installation details for their roof system.
Pros:- Four-layer construction includes woven polypropylene scrim
- Designed to resist tearing better than roofing felt
- Textured surfaces provide grip during installation
- 10-square roll coverage can reduce the number of seams and fasteners
Cons:- Intended for steep-slope roofing applications
- Listing does not provide a UV exposure duration
- Not a self-adhesive repair membrane for small or irregular areas
Best for: Roofers covering a steep-slope roof beneath asphalt shingles or metal roofing who want a reinforced synthetic roll with broad coverage.
Not ideal for: Flat-roof projects, small leak repairs, or buyers who need a stated UV exposure period or a peel-and-stick membrane.
- Roll width:3.5 ft
- Roll length:286 ft
- Roll coverage:10 squares
- Material:Synthetic, woven polypropylene
- Construction:Four layers
- Weight:19 lb
- Suitable roofing:Asphalt shingles or metal roofing
Our verdict“Choose DuPont Roof Protector for broad steep-slope coverage beneath shingles or metal roofing, provided its exposure and installation details fit the project.”
ApxRoufin Synthetic Roofing Underlayment Roll, 48 in x 250 ft
ApxRoufin’s four-layer polypropylene construction suits buyers who want one underlayment for metal, shingle, or tile roofing. Its 1,000-square-foot roll is a practical project size, while the non-slip surface and 18.36-pound weight may make handling easier than heavier options such as BlackKnight. It also lists Class A fire resistance and resistance to wind and tearing, giving it a useful combination of installation and in-service protections.
The main limitation is its 90-day UV exposure window, shorter than Grip-Rite ShingleLayment-LWE’s 180 days and BlackKnight’s six months. Its stated minimum slope is 2:12, so it is not the pick for flatter roofs. I’d choose it when roof-type flexibility and lighter handling matter more than a long uncovered installation window.
Pros:- Compatible with metal, shingle, and tile roof systems
- Four-layer polypropylene construction is described as resistant to tearing and wind
- Non-slip surface and 18.36-pound weight can support easier handling
- Lists ASTM E108 Class A fire resistance and up to 90 days of UV exposure
Cons:- Shorter stated UV exposure window than Grip-Rite ShingleLayment-LWE or BlackKnight
- Not intended for roof slopes below 2:12
Best for: Roofers or homeowners covering a 2:12-or-steeper metal, shingle, or tile roof who want a lighter 1,000-square-foot roll.
Not ideal for: Buyers whose project may leave the deck exposed beyond 90 days, or anyone roofing below a 2:12 slope.
- Dimensions:48 in x 250 ft
- Coverage:1,000 sq ft
- Material:Polypropylene
- Layers:4
- Weight:18.36 lb
- Vapor permeance:0.12 perms
- UV exposure resistance:Up to 90 days
- Minimum roof slope:2:12
- Fire resistance:ASTM E108 Class A
Our verdict“Choose ApxRoufin for a lighter, multipurpose roll on a qualifying slope, but pick Grip-Rite or BlackKnight if longer UV exposure is the priority.”
BlackKnight 4 ft x 250 ft Synthetic Roofing Underlayment
BlackKnight’s standout advantage is its six-month UV resistance, which gives a roofing project more flexibility than ApxRoufin’s 90-day limit or SIPA’s 60-day window. That longer stated exposure period can help when weather, scheduling, or phased work delays installation of the finished roof. The four-layer construction, traction-enhancing top, and slip-resistant base also target tear resistance and footing during installation.
At 1,000 square feet per roll, it matches the coverage of Grip-Rite ShingleLayment-LWE, and its printed nail guides plus 50 included cap nails provide a useful starting set of installation supplies. Those nails do not necessarily cover every project’s fastening needs, though, and the listed weight of 23.6 pounds is heavier than ApxRoufin. I’d favor BlackKnight when exposure time and layout aids matter more than minimizing roll weight.
Pros:- Up to six months of stated UV resistance
- Four-layer build is described as tear- and moisture-resistant
- Traction-enhancing top and slip-resistant base support footing
- Printed nail guides and 50 galvanized plastic cap nails are included
Cons:- At 23.6 pounds, it is heavier than ApxRoufin and Grip-Rite ShingleLayment-LWE
- Additional fasteners may be needed beyond the 50 included cap nails
Best for: Roofing crews managing a delayed or phased installation who want a long stated UV window, printed nail guides, and some cap nails included.
Not ideal for: Buyers seeking the lightest roll or expecting the included 50 cap nails to supply all fasteners for a large roof.
- Dimensions:4 ft x 250 ft
- Coverage:1,000 sq ft (10 squares)
- Layers:4
- Weight:23.6 lb
- UV resistance:Up to 6 months
- Color:Black
- Included fasteners:50 galvanized plastic cap nails
- Part number:AM-BK-SRU4250
Our verdict“Pick BlackKnight when a long exposure window and built-in layout aids outweigh the heavier roll and likely need for extra fasteners.”
Grip-Rite ShingleLayment-LWE Synthetic Roofing Underlayment, 4 ft. x 250 ft.
Grip-Rite ShingleLayment-LWE offers the longest stated UV window in this group: up to 180 days. That makes it a strong fit for projects where the roof deck may remain exposed through scheduling delays, though it is still described as temporary protection rather than a finished roof covering. Its woven polypropylene construction is designed to resist tearing, cracking, and moisture, while the non-skid surfaces and placement guides can help crews work and align courses.
Compared with BlackKnight, it offers a shorter stated window than six months but is lighter at 18.5 pounds and gives chalk lines a surface designed to hold them. Unlike BlackKnight, the supplied details do not list included fasteners. I’d choose it for a long but planned installation period and practical layout help, not as a substitute for the finished roofing system.
Pros:- Up to 180 days of stated UV exposure, longer than ApxRoufin and SIPA
- Woven polypropylene is designed to resist tearing, cracking, and moisture
- Non-skid top and slip-resistant base support safer handling
- Placement guides and chalk-line-holding material aid alignment
Cons:- Specified for temporary outdoor exposure during roofing work, not as the finished roof
- No included fasteners are listed in the supplied product details
Best for: Roofing crews or property owners expecting a lengthy installation schedule who want placement guides and a surface that holds chalk lines.
Not ideal for: Buyers who need a permanent exposed roof surface or want cap nails included with the roll.
- Dimensions:4 ft x 250 ft
- Coverage:1,000 sq ft
- Material:Woven polypropylene
- Weight:18.5 lb
- UV exposure:Up to 180 days
- Model:SL154250LWE
- Pack quantity:1
Our verdict“Choose Grip-Rite ShingleLayment-LWE when a long temporary exposure period and clear layout aids matter more than included fasteners.”
SIPA 100 GSM Synthetic Waterproof Roof Underlayment, 48 in. x 250 ft.
SIPA is a straightforward choice for asphalt-shingle and metal-roof projects that need water-resistant deck protection without a long uncovered phase. Its non-woven polypropylene laminated with PE and UV- and water-resistant adhesive form a different construction approach from the woven Grip-Rite ShingleLayment-LWE. SIPA also lists compliance with ASTM D4869 and ASTM D226, useful reference points for buyers comparing underlayment specifications.
The tradeoff is its 60-day UV limit, shorter than ApxRoufin’s 90 days, Grip-Rite’s 180 days, and BlackKnight’s six months. At 21.1 pounds, it is also heavier than Grip-Rite. Roofing nails with plastic caps or cap staples must be sourced separately. I’d put it on a project with a defined installation schedule rather than one likely to sit exposed for months.
Pros:- Water-resistant construction protects roof decking during installation
- Compatible with asphalt shingles and metal roofing
- Lists ASTM D4869 and ASTM D226 standards
- Suitable for residential and commercial rooftops
Cons:- Up to 60 days of UV resistance is shorter than the windows listed for ApxRoufin, Grip-Rite, and BlackKnight
- Roofing nails with plastic caps or cap staples are sold separately
- At 21.1 pounds, it is heavier than Grip-Rite ShingleLayment-LWE
Best for: Residential or commercial project planners using asphalt shingles or metal roofing who expect to cover the underlayment within 60 days.
Not ideal for: Crews facing uncertain schedules or extended exposure, and buyers who want fastening supplies included.
- Dimensions:48 in x 250 ft
- Coverage:1,000 sq ft
- Material:Non-woven PP laminated with PE and UV- and water-resistant adhesive
- Weight:21.1 lb
- UV resistance:Up to 60 days
- Color:Gray
- Standards:ASTM D4869 and ASTM D226
- Package quantity:1
Our verdict“Choose SIPA for a scheduled shingle or metal roofing job where its stated standards fit your needs and the deck will be covered within 60 days.”
Interwrap Roof Underlayment, 48 in x 250 ft
Interwrap stands apart with a listed Class 4 hail rating and broad operating temperature range, from -40°F to 240°F. Those specs make it a distinctive option for buyers weighing impact exposure and temperature extremes, rather than focusing mainly on installation aids. It is designed for steep-slope roofs beneath asphalt and synthetic shingles, metal roofing, and cedar shakes, and its slip-resistant walking surface supports movement during roof work.
Compared with BlackKnight, Interwrap lists a six-month UV window but does not include the printed nail guides or 50 cap nails. It also uses at least 20% reclaimed content and is described as 100% recyclable. The supplied details do not state a roll weight or a precise square-foot coverage figure, so planning is less complete than for the 1,000-square-foot ApxRoufin and Grip-Rite rolls. I’d shortlist it when hail and temperature ratings lead the decision.
Pros:- Lists Class 4 hail and Class A fire ratings
- Rated for temperatures from -40°F to 240°F
- Compatible with asphalt and synthetic shingles, metal roofing, and cedar shakes
- Uses at least 20% reclaimed content and is described as 100% recyclable
Cons:- Six-month UV exposure limit may not suit projects with a longer delay
- Supplied specs do not state a precise square-foot coverage or roll weight
- No printed nail guides or included fasteners are listed
Best for: Owners and contractors on steep-slope projects who prioritize a stated Class 4 hail rating, broad temperature range, and compatibility with several roofing materials.
Not ideal for: Buyers who need a stated square-foot coverage or roll weight before planning, or who want included fastening aids.
- Dimensions:48 in x 250 ft
- Model:UDL25
- Material:Plastic
- Roll coverage:10 squares (as listed)
- Temperature range:-40°F to 240°F
- UV exposure:6 months
- Reclaimed content:Minimum 20%
- Recyclability:100% recyclable
- Quantity:1 roll
Our verdict“Choose Interwrap when hail, temperature range, and roofing-material compatibility matter more than detailed coverage data or built-in fastening aids.”
How We Picked
I compared the 15 products by application type, stated dimensions, material or product positioning, and likely project fit. Roof underlayment must work with the roof covering, deck, climate, and installation method, so I gave weight to clear distinctions such as peel-and-stick application, synthetic sheet format, high-temperature positioning, and the notably different EPDM membrane. I also looked at roll coverage as a practical factor: a large-format roll may fit a broad roof job, while a short roll is more plausible for a small area or targeted repair.
The ranking favors products with a clear role and useful information for matching them to a project, rather than treating all rolls as interchangeable. ZIP System leads for its distinct self-adhering format; DuPont is a strong synthetic pick for larger coverage; and Grip-Rite HT earns a specialty role for buyers who need high-temperature positioning. The remaining products follow according to how clearly their listed format or stated use separates them. Product names and dimensions alone do not establish code compliance or compatibility, so buyers should confirm current manufacturer instructions, local requirements, and roofing-system specifications before purchase.
Factors to Consider When Choosing Best Roof Underlayment
I would start with the roof assembly and installation conditions, then narrow the field by underlayment type and roll format. These decisions can prevent a mismatch that extra coverage or a specialty label cannot fix.
Match the Underlayment to the Roof Covering and Assembly
Underlayment is one layer in a roof system, and the right choice depends on the covering above it and the deck beneath it. Check the roofing material maker’s instructions for permitted underlayments, fastening methods, and any restrictions on direct contact. Some assemblies call for a particular membrane or separation layer, so a product that works under shingles may not be suitable beneath metal or another covering. Also check whether the underlayment is approved for the intended slope and exposure conditions. A familiar product name is not a substitute for confirming compatibility with the complete assembly.
Choose Between Self-Adhering and Mechanically Fastened Sheets
Self-adhering rolls, such as the ZIP System and short MYOYAY or GOOFCXO options in this lineup, bond to the deck rather than relying only on mechanical fasteners. That can suit locations where a sealed application is specified, but installation depends on deck preparation, weather, alignment, and careful handling of the release liner. Synthetic sheets are generally installed by fastening and overlapping according to product directions, which can be easier to stage across broad areas. Do not assume one method is automatically safer or simpler for every crew. Select the method your installer can apply correctly under the actual site conditions.
Treat Temperature and Weather Limits as Installation Requirements
A high-temperature designation, such as the one in Grip-Rite ShingleLayment HT’s name, signals a different intended role from a general synthetic sheet. Still, buyers should read the product documentation for application temperature, exposure limits, and compatibility with the chosen roof covering. Self-adhering membranes can be sensitive to surface condition and installation weather, while synthetic rolls also have limits on how long they may remain exposed before roofing is installed. A product label alone does not tell you whether the planned schedule is acceptable. Ask the roofer to confirm the manufacturer’s written requirements before ordering.
Calculate Coverage With Overlaps and Roof Details Included
Published roll dimensions are not the same as usable roof coverage because courses overlap and roof edges, valleys, and penetrations create offcuts. The 48-inch-by-250-foot rolls in this roundup offer a common large-roll format, while DuPont’s 42-inch-by-286-foot roll uses a narrower width and longer length. Shorter 16.4-foot and 32.8-foot rolls are easier to assign to small areas but can mean more seams and roll changes on a large roof. Ask for the manufacturer’s coverage calculation rather than multiplying the outside dimensions alone. Add a sensible allowance for the roof shape and installation layout, not an arbitrary extra amount.
Separate Whole-Roof Coverage From Repair or Specialty Membranes
Not every product in this group serves the same scale of work. The compact self-adhesive rolls may make sense for a limited detail or small project, while large synthetic rolls are more aligned with broad coverage. Pushglossy’s 50-mil EPDM membrane is a distinct rubber-membrane option, not simply another interchangeable synthetic underlayment roll. Before using a repair-oriented or specialty membrane across a roof, confirm its intended application and compatibility with surrounding materials. Matching product scale to the job helps avoid unnecessary seams, leftover material, and an unsuitable assembly.
Verify Documentation Before Comparing Value
When product listings provide different levels of detail, do not treat missing information as proof that two underlayments perform alike. Look for technical data on water resistance, tear strength, slip resistance, exposure duration, fastening, and required overlaps. Confirm any code approvals or warranty conditions directly with the manufacturer and your roofing professional. A broad roll may reduce handling interruptions, but that advantage matters only if the product meets the roof system’s requirements. Compare the full installation and documentation needs, not just material type or roll size.
Frequently Asked Questions
Should I choose peel-and-stick or synthetic underlayment for my roof?
Start with the roof covering, deck, climate, and manufacturer’s installation instructions rather than choosing by material name alone. Peel-and-stick products such as ZIP System can suit assemblies that call for an adhered membrane, but they require suitable surface preparation and careful application. Synthetic rolls, including DuPont Roof Protector and the 48-inch options, are a different installation approach and may fit broad coverage more naturally. Neither type is right for every roof. Have your roofer confirm the approved assembly and installation conditions before deciding.
Can I use a short self-adhesive roll to cover an entire roof?
A short roll can technically cover an area if its documented use and coverage fit the roof, but it may create many seams and frequent roll changes on a large surface. The 16.4-foot and 32.8-foot MYOYAY rolls and the 16.4-foot GOOFCXO roll are more naturally suited to limited areas than to a broad roof job. Check the listed application, required overlaps, and total usable coverage before estimating quantities. Do not join products or layers in a way their instructions do not allow. For whole-roof work, compare the labor and seam layout with a large-format roll.
Does a high-temperature underlayment matter beneath metal roofing?
It can matter when the roofing manufacturer or roof design specifies an underlayment suited to elevated temperatures. Grip-Rite ShingleLayment HT is explicitly positioned as a high-temperature synthetic option, but that label alone does not establish compatibility with every metal roof. Confirm the permitted temperature range, contact requirements, and fastening or attachment method in the product documentation. Also check the metal roofing maker’s instructions, since coatings and assembly details can affect the choice. If the specifications do not call for a high-temperature product, compare alternatives based on the complete system rather than assuming HT is always preferable.
How should I compare rolls with different widths and lengths?
Compare the manufacturer’s stated usable coverage, not just the outside width and length. Overlaps, roof shape, valleys, edges, and penetrations all reduce the area a roll can cover. DuPont’s 42-inch-by-286-foot format differs from the 48-inch-by-250-foot rolls, so neither is automatically the more efficient choice without a layout calculation. Ask the installer how the course width and required overlaps affect seams and offcuts on your roof. That estimate is more useful than comparing roll dimensions in isolation.
Is the Pushglossy EPDM membrane interchangeable with synthetic underlayment?
No: Pushglossy’s 50-mil EPDM rubber membrane is a distinct product type from the synthetic sheet underlayments in this roundup. Its listed material and thickness do not show that it can replace a standard underlayment in any given roof assembly. Check its intended use, substrate compatibility, seams, attachment instructions, and local requirements before buying. Confirm that the roofing material above it is approved for the combination. For a conventional underlayment layer, choose a product documented for that role rather than treating all waterproof membranes as interchangeable.
Conclusion
For most buyers comparing these options, ZIP System Peel-and-Stick is my best overall pick because its adhered format gives it a clear role, provided the roof assembly and installation conditions support it. Best for broad synthetic coverage is DuPont Roof Protector, while best for high-temperature needs is Grip-Rite ShingleLayment HT when its documentation fits the project. The 48-inch-by-250-foot rolls, including ArmorLay 25, ApxRoufin, BlackKnight, SIPA, and Interwrap, are worth comparing for value only after checking their technical data and usable coverage; the supplied details do not establish a single value winner. For beginners, I would choose the product whose instructions and compatibility are confirmed by the roofer rather than attempting to select by roll dimensions alone. Choose the compact self-adhesive rolls for suitably limited applications, and consider Pushglossy only when an EPDM membrane specifically fits the intended assembly.
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