FeltBuster Synthetic Roofing Felt Underlayment

GAF FeltBuster is a high-traction, synthetic roofing felt that adds a critical moisture barrier between shingles and the roof deck. Its non-asphaltic polypropylene construction is lightweight, tear-resistant, and resists wrinkling for a smoother shingle installation.

Key Features:

• High-Traction Surface: Special spunbond top layer provides superior foot traction for safer installs.
• Tear-Resistant Durability: Tough synthetic build helps resist damage underfoot and in high winds.
• Moisture Protection: Acts as a secondary water-shedding layer to help prevent wind-driven rain intrusion.
• Wrinkle-Resistant: Non-absorptive material avoids water uptake and unsightly wrinkling that can telegraph through shingles.
• Lightweight 10-Square Roll: 4 ft x 250 ft (1,000 sq ft) roll is easy to carry and handle on the roof.

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What roof types is FeltBuster suitable for?
A: It’s designed for steep-slope residential roofs as a synthetic underlayment beneath asphalt shingles.

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

Q: Is it compatible with enhanced warranties?
A: Yes, it’s eligible as an accessory in GAF residential enhanced warranties and can qualify for up to a Lifetime Limited Warranty when used on Lifetime Shingle roofs.

Q: How much does a roll weigh?
A: Approximately 21 lb per roll, making it easy to handle on the roof.

Q: Does it meet building code standards?
A: Yes—Florida Building Code, Miami-Dade, TDI, ASTM D226, ASTM D4869, and CSA A123.3.

Streamlined Protection With a Clean, Modern Roof Deck

FeltBuster lays down with a crisp, gridlined surface that immediately tidies the roof deck, setting the stage for a refined finish. I love the cool gray tone—it’s chic and practical, staying comfortable to work over in the sun. Pair it with architectural shingles to amplify shadow lines and achieve a tailored, elevated silhouette. This is the quiet luxury underlayment that ensures beauty lasts from the inside out.

Upgrade your roof with GAF FeltBuster today for lightweight handling, superior traction, and long-lasting moisture protection.