FeltBuster 1000 sq. ft. Synthetic Roofing Underlayment Roll
- Tear-resistant synthetic roll at comparable price to asphalt felt
- Enhanced traction for installers versus typical asphalt felts
- Synthetic felt underlayment part of GAF Lifetime Roofing System
- See More Details
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Product Overview
Quality roofing underlayment is critical for helping to prevent wind-driven rain from infiltrating under the roof's shingles and potentially damaging the home's structure and interior. Traditional asphalt felt underlayments tear easily and absorb moisture, leading to wrinkling that telegraphs through the shingles. Competitively priced with typical #15 and #30 asphalt felts, GAF FeltBuster High-Traction Synthetic Roofing Felt is virtually untearable and will not absorb moisture, helping to prevent wrinkling. Its specially designed surface combines enhanced walk ability with a cooler working surface (versus black asphalt felts). Part of the GAF Lifetime Roofing System, FeltBuster High-Traction Synthetic Roofing Felt is covered by up to a lifetime limited warranty when installed on lifetime shingle roofs.
- This product is water-resistant; it is NOT waterproof. It is intended as a secondary layer of water-shedding protection underneath the primary roof covering, such as asphalt shingles. Do NOT USE as a temporary roof or “dry-in” solution to protect property or possessions.
- Enhanced Walkability — Special spunbound surface helps provide increased traction versus typical asphalt felts
- Tough Synthetic Construction — Resists tearing and will not absorb moisture, become brittle, or leach oils
- Cooler to Work On — Medium-gray surface is up to 30° cooler than typical black asphalt felts (Based on GAF testing with underlayments installed on plywood deck at 90°F (32.2°C) ambient temperature and left exposed to direct sunlight)
- Easy to Work With — Super-lightweight, 10-square, 48 in. (1.23 m) wide roll (versus typical 36 in. [914 mm] wide felt rolls)
- Durable — Non-asphaltic polypropylene construction for long-lasting performance (unlike conventional felts that can disintegrate over time)
- A Better-Looking Roof — Lies flatter than typical felts and avoids “telegraphing” of wrinkles, which can detract from the look of the new roof
- Peace of Mind — Part of the GAF Lifetime Roofing System and eligible for Lifetime ltd. warranty when installed on Lifetime Shingle roofs (See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions)
Compare Similar Underlayments & Leak Barriers
 | Best Seller |  |  | |
| Brand | GCP Applied Technologies | GAF | GCP Applied Technologies | GAF |
| Name | Grace Select 36 in. x 65 ft. Roll Self Adhered Roofing Underlayment (195 sq. ft.) | FeltBuster 1000 sq. ft. Synthetic Roofing Underlayment Roll | Tri-Flex XT 48 in. x 250 ft. Black Synthetic Roll Roofing Underlayment | Deck-Armor 400 sq. ft. Premium Breathable Synthetic Roofing Underlayment Roll |
| Price | ||||
| Ratings | (46) | (240) | (50) | (5) |
| Underlayment/Barrier Type | Peel & Stick Underlayment | Synthetic Underlayment | Synthetic Underlayment | Synthetic Underlayment |
| Application Method | Peel & Stick | Nail | Nail | Nail |
| Features | High Wind Resistant,Water Resistant | Corrosion Resistant,Water Resistant | Extreme Heat,High Wind Resistant | Mildew Resistant,Waterproof |
| Unrolled length (ft.) | 65 | 250 | 250 | 100 |
| Product Width (in.) | 36 | 48 in | 48 | 48 |
| Material | Asphalt | Felt | Synthetic Fiber | Felt |
| Roofing Product Type | Underlayment | Underlayment | Underlayment | Underlayment |
| Fire Rating (UL 790) | Class A | Class A | Class A | No Rating Available |
| Product Thickness (in.) | 0.0251969 in | 6.0 in | .04 | 6.5 in |
| View Product | View Product | View Product | View Product |
Compare Similar Underlayments & Leak Barriers
| Best Seller | | | |
| Brand | GCP Applied Technologies | GAF | GCP Applied Technologies | GAF |
| Name | Grace Select 36 in. x 65 ft. Roll Self Adhered Roofing Underlayment (195 sq. ft.) | FeltBuster 1000 sq. ft. Synthetic Roofing Underlayment Roll | Tri-Flex XT 48 in. x 250 ft. Black Synthetic Roll Roofing Underlayment | Deck-Armor 400 sq. ft. Premium Breathable Synthetic Roofing Underlayment Roll |
| Price | ||||
| Ratings | (46) | (240) | (50) | (5) |
| Underlayment/Barrier Type | ||||
| Application Method | ||||
| Features | ||||
| Unrolled length (ft.) | ||||
| Product Width (in.) | ||||
| Material | ||||
| Roofing Product Type | ||||
| Fire Rating (UL 790) | ||||
| Product Thickness (in.) | ||||
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Coverage Area (sq. ft.)
1000
Product Thickness (in.)
6.0 in
Product Width (in.)
48 in
Unrolled length (ft.)
250
Details
Application Method
Nail
Color Family
Gray
Features
Corrosion Resistant,Water Resistant
Fire Rating (UL 790)
Class A
Material
Felt
Product Weight (lb.)
27 lb
Returnable
90-Day
Roofing Product Type
Underlayment
Squares (100sq. Ft)/Roll
10
Surface Recommended
Wood
Texture
Smooth
Underlayment/Barrier Type
Synthetic Underlayment
Warranty / Certifications
Manufacturer Warranty
Eligible for Lifetime Warranty Coverage! Lifetime means as long as the original owner(s) of a single family detached residence [or the second owner(s) in certain circumstances] owns the property. Lifetime limited warranty on accessories requires use of at least three qualifying GAF Accessories and Lifetime Shingles. See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.
Questions & Answers
80Questions23Answers
Can one use metal cap nails instead of plastic cap nails?
Asked by novice April 12, 20214
AnswersNo you can not Metal is magnetic n due to the North Pole anything magnetic will turn upside down
can I use this under a metal roof
Asked by skibum March 9, 20212
AnswersHello, thank you for your question. This product is intended for use under asphalt shingles. We recommend GAF Tiger Paw or Deck-Armor for use under metal. Thank you
How is it applied
Asked by Gerry December 31, 20202
AnswersPlastic cap roofing nails.
is this an ice and water barrier?
Asked by GusD November 27, 20204
AnswersNo, it is not an ice barrier. It is only to protect roof decking and preserve the shingle manufacturer warranty.
Can it be use under concrete tile?
Asked by Fidel100 November 3, 20201
AnswerHello, this product is designed for use under asphalt shingles. For use under concrete tile, you may want to consider GAF Tiger Paw or Deck-Armor underlayments. Thank you for your question.
can you use as a house wrap on shed
Asked by chuck July 26, 20202
AnswersHello, this product is designed as roofing underlayment. Alternate applications, such as your installation are not recommended. Thank you.
Can this be used as a base for acrylic elastomeric coating on a wood roof?
Asked by FluxCapacitor July 23, 20202
AnswersI would bet on it, I’ve used Sto, Dryvit, Synergy and most other systems and this is exactly what I would use now. I’ve been doing synthetic stucco for 25 years
Can you use under a metal roof
Asked by Home June 27, 20201
AnswerHello, thank you for your question. For metal roofs, we would recommend GAF Tiger Paw, Deck-Armor or Versashield. Please consult the metal roofing manufacturer to ensure they approve of the use of synthetic underlayments under their metal roofing products - most do. Thank you.
Can I use this as a house wrap to put under the siding? According to California code?
Asked by val May 3, 20203
AnswersI am not in Ca, but I would think an inspector would expect what is approved for siding, not roofing. Always read the company website
Can SBS self-adhering cap sheet or the cap sheet with cold adhensive be adhered/applied on the to...
Asked by Vermilion April 5, 20202
AnswersThanks for your question. GAF does not have applications for the Liberty Membrane to be installed over the FeltBuster underlayment. Unfortunately, FeltBuster is designed as an underlayment for asphalt shingles. It is not intended to be a base sheet. Please contact the Technical Services Team at 800-766-3411 for approved substrates the Liberty products may be installed to.
Customer Reviews
Feb 18, 2020
Feltbuster rolls out flat and has lines every 2" to assist in keeping the roofing strait. We inst...
Feltbuster rolls out flat and has lines every 2" to assist in keeping the roofing strait. We install most all laminate shingles at a dropped exposure of 4" - which makes Feltbuster perfect. GAF Feltbuster is reasonably priced at Home Depot, however we are not finding it in stock lately.
by GNP
Dec 5, 2017
This synthetic felt paper was great to work with. Nice and light. Provided excellent traction on ...
This synthetic felt paper was great to work with. Nice and light. Provided excellent traction on the roof, and made the job much easier then it wouldve been had we used standard felt paper. 5 stars across the board
by Nickname
Sep 19, 2017
This is an awesome product!! So much lighter then traditional roll of felt, easy to walk on and M...
This is an awesome product!! So much lighter then traditional roll of felt, easy to walk on and MUCH cooler too. Well worth the extra money when comparing it to traditional felt ... not to mention a lot more sq. ft. per roll. I like the fact that is a plastic based product and not paper.
by J75
May 29, 2017
This is an excellent product. Lightweight, wide width makes for less seams, "charting" on the Fel...
This is an excellent product. Lightweight, wide width makes for less seams, "charting" on the FeltBuster helps with capped nail placement as well as shingle positioning. I used FeltBuster in conjunction with the GAF roofing system and it has been a pleasure to work with. You can tell the difference in heat absorption versus standard felt the moment you put it down. And this stuff is durable....I walked on it with no slip or damage.
by jestjack
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