Owens Corning Deck Defense Synthetic Underlayment, Light Gray, 10 Square Roll

Owens Corning Deck Defense is a synthetic roofing underlayment supplied in light gray 10-square rolls for steep slope roofing applications. It installs beneath asphalt shingles and other steep slope coverings as a secondary water-shedding layer. One order is a single 10-square roll.

Key Features:

• Synthetic construction: A synthetic underlayment designed for steep slope roof decks.
• 10-square roll: Each roll covers 10 roofing squares of deck area.
• Light gray color: Supplied in light gray for a clean, uniform deck appearance.
• Roll format: Sold by the roll for efficient handling on the roof.
• Shingle underlayment: Listed for use as steep slope roofing underlayment.

Specifications Table:

Coverage & How Much You Need:

One roll covers 10 squares (1,000 square feet) of roof deck before overlap deductions; plan roll count from the measured deck area and follow the manufacturer’s overlap requirements.

Fit and Compatibility:

Intended for use under steep slope roof coverings, including asphalt shingle systems; Owens Corning shingles and accessories are sold separately.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One roll of Owens Corning Deck Defense synthetic underlayment covering 10 squares, in light gray.

Q: How many rolls do I need?
A: Divide your deck area by 10 squares per roll, then add allowance for laps and waste.

Q: What is it made of?
A: It is a synthetic underlayment rather than asphalt-saturated felt.

Q: Where is it used?
A: It is classified as a steep slope roofing underlayment, installed beneath the primary roof covering.

Q: What color is it?
A: Light gray.

Q: Is it rated for wind or fire?
A: No wind, fire or approval ratings are stated in the available sources.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Synthetic underlayment like Deck Defense is a common choice over felt because it is lighter to carry and more tear-resistant during install. Unroll it horizontally starting at the eave with proper course overlap, and check the manufacturer’s fastening pattern for your exposure. Confirm local code requirements for ice barrier at eaves; Deck Defense may need to be paired with a self-adhered ice and water membrane in those areas.

Synthetic underlayment can be slippery, especially when wet or dusty; wear appropriate footwear and fall protection while installing.

Add Owens Corning Deck Defense 10-square synthetic underlayment rolls to your shingle job.