CertainTeed RoofRunner 48-in x 250-ft (937.5-sq ft) Synthetic Roof UnderlaymentRoofRunner 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

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.

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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

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Specifications Table:

Specification	Details
Series Name	RoofRunner
Material	Synthetic polymer-based
Application Method	Nail
Underlayment Grade	#15
Coverage Area	937.5 sq ft
Length	250 ft
Width	48 in
Weight	25 lbs
For Use with Asphalt Shingles	Yes
For Use with Metal Roofing	No
For Use with Wood Shakes	No
For Use with Flat Roofing	No
CA Residents: Prop 65 Warning(s)	Yes
Warranty	Matches CertainTeed shingle warranty; 10-year limited with non-CertainTeed shingles
UNSPSC	30151500

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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.

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

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

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

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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.

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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.

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