RoofRunner Synthetic Roof Underlayment, 48 in x 250 ft

CertainTeed RoofRunner is a lightweight, synthetic polymer-based roofing underlayment for use under asphalt shingles. Its scrim-reinforced construction and special top surface provide excellent wet and dry slip resistance while delivering durable, water-resistant protection for roof decks.

Key Features:

• Lightweight Synthetic Build: Polymer-based, scrim-reinforced sheet outperforms traditional felt for easier handling and lasting protection
• Excellent Traction: Special top surface treatment enhances slip resistance—even when wet—for safer installation
• Designed for Asphalt Shingles: Ideal water-resistant layer beneath shingle roofs on steep-slope decks
• Fast, Secure Installation: Nail-applied with clear fastener targets and 48-in width for efficient coverage
• Extended Warranty Pairing: Matches the warranty period of CertainTeed shingles when installed together; 10-year limited warranty when used with non-CertainTeed shingles

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What roofs is RoofRunner intended for?
A: It’s designed as a water‑resistant underlayment layer for steep‑slope roof decks beneath asphalt roofing shingles.

Q: How is it installed?
A: RoofRunner is a nail-applied underlayment; follow the printed fastener targets and local code requirements.

Q: Is the surface slip-resistant?
A: Yes—its treated top surface provides excellent slip resistance, even when wet.

Q: What is the roll size and coverage?
A: Each roll measures 48 inches by 250 feet and covers 937.5 square feet.

Q: What warranty does it carry?
A: When used with CertainTeed shingles, it adopts the same shingle warranty period; otherwise, it has a 10-year limited warranty.

Sleek Protection for a Polished Roofline

RoofRunner’s cool, slate-gray surface and precise blue detailing bring a refined, professional finish to the unseen layers of your home. I love the scrim-reinforced body—strong yet featherlight—making installation effortless and elegant. Pair it with deep charcoal shingles to heighten contrast and crisp curb appeal. For a truly elevated exterior, this underlayment is the quiet luxury that ensures beauty lasts.

Choose RoofRunner today for fast, safe installation and long-lasting, water-resistant protection beneath your shingles.