SKU: 33136358457

GAF FeltBuster Synthetic Roofing Felt Underlayment, 4 ft x 250 ft (10-Square Roll)

Sale price$95.34 Regular price$105.93
Save 10%

Pay in installments of $26.48 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

GAF FeltBuster Synthetic Roofing Felt Underlayment, 4 ft x 250 ft (10-Square Roll)GAF FeltBuster Synthetic Roofing Underlayment Upgrade from asphalt felt with this durable, non asphaltic polypropylene underlayment that helps protect roof decks from wind driven rain and moisture. The high traction, medium gray surface is cooler to work with and the super lightweight 10 square roll is easy to handle on the roof. Key Features: High Traction Surface: Special spunbond top layer offers excellent installer grip versus typical asphalt

GAF FeltBuster Synthetic Roofing Underlayment

Upgrade from asphalt felt with this durable, non-asphaltic polypropylene underlayment that helps protect roof decks from wind-driven rain and moisture. The high-traction, medium-gray surface is cooler to work with and the super-lightweight 10-square roll is easy to handle on the roof.


Key Features:

  • High-Traction Surface: Special spunbond top layer offers excellent installer grip versus typical asphalt felts
  • Tear-Resistant Durability: Tough synthetic construction resists tearing underfoot and in high winds
  • Long-Lasting Material: Non-asphaltic polypropylene won’t rot or degrade like conventional felt
  • Cooler, Easy Handling: Medium-gray color runs cooler; lightweight 10-square roll simplifies installation
  • Code Compliant: Approved to Florida Building Code, Miami-Dade, TDI; meets ASTM D226, ASTM D4869, CSA A123.3

Specifications Table:

Specification Details
Product Name FeltBuster Synthetic Roofing Felt
Brand GAF
Product Type Synthetic roof underlayment
Material Non-asphaltic polypropylene with spunbond surface
Roll Dimensions 4 ft x 250 ft
Coverage 10 squares (1,000 sq ft / 92.9 sq m)
Color Medium gray
Unit of Measure Roll (RL)
Weight 21 lb per roll
Packaging 10 SQ. Roll
Approvals/Standards Florida Building Code Approved; Miami-Dade County Approved; TDI Approved; ASTM D226; ASTM D4869; CSA A123.3
Warranty Eligibility Eligible for up to a Lifetime Limited Warranty when used on Lifetime Shingle roofs; eligible accessory in GAF residential enhanced warranties
Performance Notes Resists wind-driven rain; tear-resistant; avoids water absorption and wrinkling; cooler to work with than black felts

Frequently Asked Questions (FAQ):

Q: What are the roll dimensions and coverage?
A: Each roll measures 4 ft x 250 ft and covers 10 squares (1,000 sq ft).


Q: Is it suitable for residential shingle roofs?
A: Yes. It’s designed for use under shingles and is eligible for enhanced GAF residential warranties when paired with Lifetime Shingles.


Q: How does it compare to traditional asphalt felt?
A: It’s lighter, more tear-resistant, non-absorbing to help avoid wrinkling, and provides better traction for installers.


Q: What is the material?
A: Non-asphaltic polypropylene synthetic underlayment with a spunbond surface.


Q: Which approvals and standards does it meet?
A: Florida Building Code, Miami-Dade County, TDI; complies with ASTM D226, ASTM D4869, and CSA A123.3.


A Sleek, Reliable Foundation for Refined Rooflines

FeltBuster lays down a crisp, graphite-toned canvas that keeps a roofline looking poised from the very first layer. I love its high-traction, grid-marked surface—smart, orderly, and confidence-inspiring for a flawless shingle layout. Pair it with deep charcoal shingles and matte black accents for a modern silhouette that feels both architectural and warm. This is the quiet luxury your home deserves—beauty that begins beneath the surface.


Choose FeltBuster today to get cooler, safer installation and long-lasting roof deck protection on your next project.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 33136358457

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
ENF
Chelsea, US
★★★★★ 3
Nice, BUT a few mounting holes would have made it 5 stars!
Color: Black*2
These seem to be fine but since I have to use this to hold a power brick to a wood joist which is NOT smooth, the included adhesive back is not something that will hold securely! I ended up have to screw two wafer head screws through the rubber backing and into the joist to hold the holder to the wood joist securely. If they put some thought into the design, it would have been nice, if they had incorporated a few mounting holes, which would have taken care if this being mounted to items that are not smooth such as a wood joist or other rough surfaces!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
B
Verified Purchase
Brandon Cunningham
Charlottesville, US
★★★★★ 5
Tight squeeze for a 240w but works well
Color: Black
This works pretty well. It was a little bit of a tight squeeze for a 240w brick, but it's stable at least. Strong adhesive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
A
Verified Purchase
Adam
Charlottesville, US
★★★★★ 5
Great for a gaming laptop!
Color: Black, Size: 1.37" without hook
Great product is you want to mount any size laptop under your desk. I used it for my Alienware gaming laptop and it's fantastic! The three points of contact hold the laptop securely, while allowing maximum airflow for the fans. The three "clamps" are rock solid and will definitely outlive the laptop. The installation was simple and easy, just need a drill.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
D
Verified Purchase
David H.
Dallas, US
★★★★★ 5
under desk laptop system
Color: Black, Size: 1.37" without hook
Reclaimed real desk space with this one. The mount holds the laptop securely underneath without any vibration or creaking and the installation required no drilling — clamped cleanly to the desk edge. The ventilation spacing is generous enough that thermals stay reasonable even under load. Works with a solid range of laptop sizes and the adjustment mechanism is easy to use. If your laptop spends most of its time docked this is the cleanest way to get it out of the way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
E
Verified Purchase
Echo November
Fort Morgan, US
★★★★★ 4
Works great, but pads are peeling.
Color: Black, Size: 1.37" without hook
Works for what I needed, which was to mount my work laptop to the side of my desk. However, the rubber pads started peeling the first day. I tried clamping them down overnight, but they still ended up peeling up. They haven't come off completely and are still working, though. I may have to glue them down.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026

recommand products