Owens Corning WeatherLock 36 in x 66.7 ft (200 sq ft) Polypropylene Roof UnderlaymentWeatherLock Polypropylene Roof Underlayment, 200 sq ft Self adhesive Owens Corning WeatherLock roof underlayment provides a watertight barrier under shingles. The granulated, slip resistant surface and excellent tear resistance support safer installation and long lasting protection against water infiltration. Key Features: Self Adhesive Seal: Adheres to the roof deck and seals around nails to help prevent water migration Slip Resistant Surface:

WeatherLock Polypropylene Roof Underlayment, 200 sq ft

Self-adhesive Owens Corning WeatherLock roof underlayment provides a watertight barrier under shingles. The granulated, slip-resistant surface and excellent tear resistance support safer installation and long-lasting protection against water infiltration.

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Key Features:

• Self-Adhesive Seal: Adheres to the roof deck and seals around nails to help prevent water migration
• Slip-Resistant Surface: Granulated texture delivers secure traction during installation
• Tear-Resistant Durability: Resists cracking and breaking for easier handling
• Enhanced Course Sealing: Taped selvedge edge improves seal between courses
• Secondary Waterproof Barrier: Creates dependable protection in vulnerable areas like eaves, valleys, and penetrations

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Specifications Table:

Specification	Details
Series Name	WeatherLock
Coverage Area	200 sq ft
Length	66.7 ft
Width	36 in
Material	Polypropylene
Application Method	Roll-on / Self-adhesive
For Use with Asphalt Shingles	Yes
For Use with Flat Roofing	No
For Use with Metal Roofing	No
For Use with Wood Shakes	Yes (engineered for) / source spec lists No
Warranty	None
UNSPSC	30151500
Surface	Granulated, slip-resistant
Tear Resistance	Excellent; resists cracking and breaking
Selvedge Edge	Improves seal between courses

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Frequently Asked Questions (FAQ):

Q: Is this underlayment compatible with asphalt shingles?
A: Yes, it is engineered for use under asphalt shingles.

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Q: What is the roll size and coverage?
A: 36 inches wide by 66.7 feet long, covering 200 sq ft per roll.

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Q: Does it help prevent leaks around nail penetrations?
A: Yes, the self-adhesive design seals around nails for a watertight barrier.

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Q: Is the surface safe to walk on during install?
A: The granulated surface is slip‑resistant to provide better traction.

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Q: Can it be used on the entire roof deck?
A: For optimal protection, it can be applied to the entire deck, ensuring proper ventilation when used over the entire deck.

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Seal the Roof in Style with Granulated Confidence

WeatherLock wraps the roof in a sleek, granulated layer that quietly elevates performance and polish. The self‑adhesive technology creates a seamless, watertight foundation beneath your shingles. Use it to define crisp valleys and eaves where precision matters most. It’s a subtle essential that brings luxury-level assurance to any home exterior.

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Protect your roof with a watertight, durable base—choose WeatherLock underlayment today.