SKU: 5939524023

GAF FeltBuster Synthetic Roof Underlayment, 48 in x 250 ft (1000 sq ft)

Sale price$84.89 Regular price$94.32
Save 10%

Pay in installments of $23.58 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

GAF FeltBuster Synthetic Roof Underlayment, 48 in x 250 ft (1000 sq ft)GAF FeltBuster Synthetic Roof Underlayment (48" x 250') GAF FeltBuster is a high traction synthetic roofing underlayment designed to protect decks beneath shingles. The durable polypropylene construction resists tearing and moisture while its medium gray surface stays cooler than traditional black felt for easier installation. Key Features: Enhanced Traction Surface: Special spunbond top layer improves walkability compared to typical asphalt felts

GAF FeltBuster Synthetic Roof Underlayment (48" x 250')

GAF FeltBuster is a high-traction synthetic roofing underlayment designed to protect decks beneath shingles. The durable polypropylene construction resists tearing and moisture while its medium-gray surface stays cooler than traditional black felt for easier installation.


Key Features:

  • Enhanced Traction Surface: Special spunbond top layer improves walkability compared to typical asphalt felts
  • Durable Synthetic Build: Non-asphaltic polypropylene resists tearing, moisture absorption, brittleness, and oil leaching
  • Cooler Working Surface: Medium-gray finish can be up to 30°F cooler than black felt for more comfortable installs
  • Lightweight, Wide Roll: 48-inch width and 10-square coverage per roll speeds application over large areas
  • Better Aesthetics: Lies flatter to reduce wrinkle telegraphing for a cleaner-looking roof

Specifications Table:

Specification Details
Series Name FeltBuster
Type Roof deck protection
Material Synthetic (Non-asphaltic polypropylene)
Application Method Nail
Underlayment Grade #30
Coverage Area 1000 sq ft
Length 250 ft
Width 48 in
Weight 23 lbs
Warranty Limited lifetime (when part of GAF Lifetime Roofing System)
For Use with Asphalt Shingles Yes
For Use with Metal Roofing No
For Use with Wood Shakes No
For Use with Flat Roofing Yes
Prop 65 Warning (CA) No
UNSPSC 30151500

Frequently Asked Questions (FAQ):

Q: Is FeltBuster waterproof?
A: No—it's water-resistant and intended as a secondary water-shedding layer beneath the primary roof covering.


Q: What roofing materials is it compatible with?
A: Designed for use under asphalt shingles; not intended for metal or wood shakes. Listed as suitable for flat roofing in specs.


Q: How is it installed?
A: Install with nails following printed fastening guides on the sheet; use as underlayment, not as a temporary roof.


Q: What is the coverage per roll?
A: Each 48 in x 250 ft roll covers 1,000 sq ft (10 squares).


Q: Does it come with a warranty?
A: Eligible for a Limited Lifetime Warranty when part of a GAF Lifetime Shingles roof, per GAF warranty terms.


A Sleek, High-Performance Base for Beautiful Rooflines

FeltBuster’s cool gray surface lays impeccably flat, creating a refined foundation that elevates any shingle pattern. I love the wide-format roll—it streamlines coverage and keeps seams clean for a polished silhouette. Pair it with dimensional shingles and crisp metal accents to highlight roof geometry. It’s a discreet essential that ensures a resilient, luxe finish from the very first layer.


Upgrade your roof’s first line of defense with GAF FeltBuster for durable, cooler, and easier installation performance.

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: 5939524023

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 12 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Sue
Waukegan, US
★★★★★ 5
clear and light sunscreen
Used this sunscreen and it works really well. It goes on clear and spreads easily. Not sticky or oily at all, very comfortable on the skin. Feels light and good for daily use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
J
Verified Purchase
June
Waukegan, US
★★★★★ 5
Matte and definitely worth purchasing
Love it. It’s definitely matte, but doesn’t dry me out. I put it on with a light moisturizer, and have no issues with pilling. It feels more like a light oil when applying, but that feeling goes away in seconds. I like that it’s also water resistant. I get oily really easily, so I’ve been looking for an affordable matte sunscreen, and this seems to be working really well for me. There’s a sunscreen smell on application, but it’s not too overwhelming and goes away quickly. Overall, 10/10 would definitely recommend, and kinda wish I could gatekeep it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
L
Verified Purchase
Larissa Palmer
Pawtucket, US
★★★★★ 5
Best sunscreen ever
Best sunscreen! Extremely smooth, it leaves your skin completely matte. It does not feel like sunscreen, it feels like a high end primer. It’s a gel not even a cream. I use it as my primer, since I have to put sunscreen on anyway, it serves as my primer before make up. I’ve always struggled with finding a decent sunscreen for my face that leaves no cast or hurts my eyes but this one is the best one I’ve ever tried. Matte, smooth, gel, does not hurt eyes, primer for make up. Amazing! And great value for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
S
Verified Purchase
Sam
Whiting, US
★★★★★ 4
Feels very oily right after applying
Ok, NON SPONSORED review. I bought this with my own money. It’s a great sunscreen, very lightweight and goes on clear. The only downside is, right after applying it feels like straight cooking oil on your skin. It’s a horrible, horrible sensory experience. But once you give it a couple minutes to dry down, it’s completely matte and feels like nothing. It hasn’t broken me out yet like other sunscreens I’ve tried, so that’s a plus.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
N
Verified Purchase
None
West Palm Beach, US
★★★★★ 5
Works great under makeup
Excellent for the face! Many sunscreens claim they are good for the face, and blend well. This one actually DOES!! It is also an excellent moisturizer under your makeup without streaking. Just a smooth, beautiful finish. I wear it all year around The sun is just as strong and quite capable of ruining your skin in the winter as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

recommand products