FeltBuster Synthetic Roofing Underlayment, 4' x 250'

GAF FeltBuster is a high-traction synthetic roofing felt designed to help protect homes by resisting tears and moisture that can lead to wrinkling. Its engineered surface enhances walkability and stays cooler underfoot, offering a reliable, professional-grade underlayment solution.

Key Features:

• High-Traction Surface: Specially engineered for enhanced walkability and a cooler working surface.
• Moisture Resistant: Synthetic construction will not absorb moisture, helping prevent wrinkling under shingles.
• Tear-Resistant Durability: Virtually untearable compared to traditional #15/#30 asphalt felt.
• Generous Coverage: 4 ft x 250 ft roll covers 10 squares (1,000 sq ft).
• Code Compliant: Meets Florida Building Code, Miami-Dade, TDI; ASTM D226, ASTM D4869, CSA A123.3.

Specifications Table:

Frequently Asked Questions (FAQ):

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

Q: Can this be used in high-wind regions?
A: Yes. It carries approvals such as Florida Building Code, Miami-Dade, and TDI when installed per manufacturer instructions.

Q: How does it compare to asphalt felt?
A: Unlike traditional #15/#30 felt, FeltBuster is synthetic, virtually untearable, and does not absorb moisture, helping prevent wrinkling.

Q: Is it safe to walk on during installation?
A: The high-traction surface is designed to enhance walkability; always follow jobsite safety practices.

Q: What is the weight of the roll?
A: Approximately 21 lb per roll.

A Sleek, Resilient Foundation for Refined Rooflines

This underlayment lays down a confident, uninterrupted canvas that keeps rooflines crisp and true. I love how its high-traction surface feels purposeful—cool, controlled, and ready for finish materials to shine. Pair it with deep charcoal shingles and matte black flashings for a tailored silhouette. It’s the quiet luxury beneath the surface that ensures a home looks impeccable for years.

Choose FeltBuster today for durable, walkable protection that keeps your roofing project smooth, safe, and code-ready.