RoofRunner Synthetic Roofing Underlayment, 4' x 250'

RoofRunner is a lightweight, scrim-reinforced synthetic roofing underlayment engineered for superior slip resistance and dimensional stability versus felt. Designed as a water-resistant layer beneath asphalt shingles, this 4 ft x 250 ft roll covers 10 squares and performs even in wet conditions.

Key Features:

• High Slip Resistance: Special top surface treatment provides secure footing, even when wet
• Dimensional Stability: Resists moisture-related expansion to help prevent wrinkles telegraphing through shingles
• Lightweight & Durable: Synthetic, scrim-reinforced construction outperforms traditional felt
• Code-Ready Performance: Meets ASTM D226 and ASTM E108 Class A; ICC-ES ESR-4103; Florida and Miami-Dade approved
• Ample Coverage: 4 ft x 250 ft roll covers 1,000 sq. ft. (10 squares)

Please check the Product Data Sheet Here

Specifications Table:

Frequently Asked Questions (FAQ):

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

Q: Can it be used under asphalt shingles?
A: Yes, RoofRunner is designed as a water-resistant underlayment beneath asphalt roofing shingles.

Q: Is it safe to walk on when wet?
A: The top surface is engineered for excellent slip resistance, including in wet conditions; always follow safety practices.

Q: What certifications does it meet?
A: ASTM D226; ASTM E108 Class A; ICC-ES AC188; ICC-ES ESR 4103; TDI; Florida Approval FL21841; Miami-Dade County Approved.

Q: How thick is the material?
A: Approximately 7 mil thick, per product details.

A Sleek, Secure Foundation for Elevated Rooflines

RoofRunner lays down a clean, refined canvas that brings order and precision to the roofscape. Its crisp, high-performance surface is a quiet hero—stable, taut, and impeccably smooth beneath shingles. Pair it with deep charcoal architectural shingles for a tailored, modern silhouette that reads as effortlessly polished. This is the underlayment that makes a roof feel intentional and luxuriously finished from the inside out.

Choose RoofRunner today for stable, code-ready protection and a smoother, longer-lasting shingle installation.

Warranty

Installation