DiamondDeck HD Synthetic Roofing Underlayment, 48" x 250'

High-performance, scrim-reinforced synthetic underlayment engineered for superior weather protection and installer safety. Ideal beneath shingle, shake, metal, or slate roofs, it offers exceptional dimensional stability and a slip-resistant top surface to work confidently—even when wet.

Key Features:

• High Performance Protection: Scrim-reinforced, water-resistant synthetic underlayment for long-lasting roof defense
• Dimensional Stability: Resists wrinkling versus felt, preventing telegraphing through shingles
• Slip-Resistant Surface: Special top coating improves traction for safer installation, even when wet
• Lightweight & Durable: Easy to carry with excellent tear resistance to reduce punctures
• Generous Coverage: 48 in x 250 ft roll provides approximately 937.5 sq ft (10 squares) of coverage

Please check the Product Data Sheet Here

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What roofing materials can this underlayment be used with?
A: It’s suitable beneath shingle, shake, metal, or slate roofing systems.

Q: How much coverage does one roll provide?
A: Approximately 937.5 sq ft per roll (10 squares).

Q: Is it safer to walk on than felt?
A: Yes. The special top surface treatment provides excellent slip resistance, even when wet.

Q: Does it meet building code and fire standards?
A: Yes. It carries approvals including UL 790 Class A, ASTM E108 Class A, ICC-ES ESR-3344, Florida Building Code, Miami-Dade, TDI, and more.

Q: What are the roll dimensions and weight?
A: Roll size is 48 inches wide by 250 feet long; weight is about 38 lb.

A Sleek, Secure Foundation for Elevated Rooflines

DiamondDeck HD lays down a refined, matte canvas that quiets visual clutter and sets the stage for an immaculate roof silhouette. Its scrim-reinforced body brings a tailored rigidity, keeping lines crisp beneath shingles or metal panels. Style it with dark architectural shingles for a bold, modern crown or pair with standing-seam metal to underscore clean geometry. Consider it the invisible luxury—performance you feel in every flawless plane.

Choose DiamondDeck HD today for safer installs, stable coverage, and lasting roof performance.

Warranty

Installation