WeatherLock Polypropylene Roof Underlayment, 36-in x 66.7-ft

Self-adhering WeatherLock roof underlayment creates a watertight secondary barrier beneath shingles. The granulated, slip-resistant surface and excellent tear resistance help ease installation while protecting vulnerable areas against ice dams and wind-driven rain.

---

Key Features:

• Self-Adhesive Seal: Adheres to the deck and seals around nails to help prevent water migration.
• Slip-Resistant Surface: Granulated top provides traction for safer, easier installs.
• Tear-Resistant Build: Resists cracking and breaking during installation for durability.
• Enhanced Waterproofing: Modified asphalt construction forms a dependable watertight barrier; selvedge edge improves seal between courses.
• Sized for Coverage: 36-in x 66.7-ft roll covers 200 sq ft for efficient roof projects.

---

Specifications Table:

Specification	Details
Series Name	WeatherLock
Coverage Area	200 sq ft
Roll Length	66.7 ft
Roll Width	36 in
Material	Polypropylene
Application Method	Self-adhesive, roll on
Surface	Granulated, slip-resistant
Tear Resistance	Excellent; resists cracking and breaking during installation
Water Protection	Ice and water barrier; seals around nails
Selvedge Edge	Improves seal between courses
For Use with Asphalt Shingles	Yes
For Use with Flat Roofing	No
For Use with Metal Roofing	No
For Use with Wood Shakes	Yes
Warranty	None
CA Prop 65 Warning	Yes
UNSPSC	30151500

---

Frequently Asked Questions (FAQ):

Q: What roofing materials is this underlayment compatible with?
A: Designed for use with asphalt shingles and suitable for wood shakes and slate roof assemblies as part of a roofing system.

---

Q: Is it self-adhering or mechanically fastened?
A: It is a self-adhesive underlayment that bonds to the roof deck and seals around nails.

---

Q: How much area does one roll cover?
A: Each 36-in x 66.7-ft roll covers 200 square feet.

---

Q: Does it help with ice dams and wind-driven rain?
A: Yes, it acts as an ice and water barrier to protect vulnerable areas such as eaves, valleys, chimneys, vents, and skylights.

---

Q: Is the surface safe to walk on during install?
A: Yes, the granulated surface is designed to be slip-resistant for better traction.

---

A Sleek, Watertight Foundation for Your Roof

WeatherLock lays down a crisp, graphite-hued canvas that disappears beneath shingles yet elevates the entire assembly with performance. Its granulated texture is a subtle, tactile detail that grips underfoot and signals strength. Wrap eaves, valleys, and chimneys to craft a flawless, watertight edge before the first shingle is set. Consider it the quiet luxury layer—essential protection that lets your roof look beautiful and live beautifully.

---

Secure your roof with WeatherLock today and add a reliable, watertight barrier before the shingles go on.