SKU: 26997746759

Owens Corning WeatherLock Mat 36-in x 66.7-ft (200-sq ft) Polypropylene Roof Underlayment

Sale price$54.05 Regular price$60.06
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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28

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Description

Owens Corning WeatherLock Mat 36-in x 66.7-ft (200-sq ft) Polypropylene Roof UnderlaymentWeatherLock Mat Polypropylene Roof Underlayment, 200 sq ft Lightweight, self sealing roof underlayment designed to add a waterproof layer beneath shingles. The WeatherLock Mat roll covers 200 sq ft and features SureStep technology for improved traction and easier installation. Key Features: Waterproof Protection: Acts as a secondary barrier under shingles to help prevent leaks from wind driven rain and ice dams SureStep Traction: Mat faced design

WeatherLock Mat Polypropylene Roof Underlayment, 200-sq ft

Lightweight, self-sealing roof underlayment designed to add a waterproof layer beneath shingles. The WeatherLock Mat roll covers 200 sq ft and features SureStep technology for improved traction and easier installation.


Key Features:

  • Waterproof Protection: Acts as a secondary barrier under shingles to help prevent leaks from wind-driven rain and ice dams
  • SureStep Traction: Mat-faced design provides consistent surface grip to reduce slipping, sticking, and scuffing
  • Lightweight Handling: Up to 40% lighter than standard mat-faced products for easier loading, carrying, and installation
  • Versatile Application: Suitable for full deck coverage and vulnerable areas like eaves, rakes, valleys, vents, chimneys, and skylights
  • Self-Adhesive Convenience: Adheres to deck to create a watertight seal around nails and speeds installation

Specifications Table:

Specification Details
Series Name WeatherLock Mat
Coverage Area 200 sq ft
Length 66.7 ft
Width 36 in
Application Method Roll on
Material Polypropylene
For Use with Asphalt Shingles Yes
For Use with Flat Roofing Yes
For Use with Metal Roofing No
For Use with Wood Shakes No (web spec), marketing images show engineered for wood shake
CA Residents: Prop 65 Warning(s) Yes
Warranty None
UNSPSC 30151500
Feature Self-adhesive, self-sealing waterproofing barrier
Weight (lbs.) 61.5

Frequently Asked Questions (FAQ):

Q: What roof types is this underlayment compatible with?
A: It’s engineered for asphalt shingles, wood shakes, and quarry slate roof assemblies; not recommended for metal roofing.


Q: How much area does one roll cover?
A: Each roll measures 36 inches by 66.7 feet and covers 200 square feet.


Q: Is the surface safe to walk on during installation?
A: Yes. The SureStep mat-faced design provides excellent traction to help reduce slipping and scuffing.


Q: Does it require special tools to install?
A: No special tools are required; it is a roll-on, self-adhesive underlayment designed for straightforward application.


Q: Is there a manufacturer warranty?
A: No warranty is listed for this product.


Sleek, Secure Roofing Foundation

WeatherLock Mat brings a refined, matte texture that quietly elevates the craft beneath your shingles. Its standout SureStep surface offers confident footing as you sculpt clean roof lines. Use it to trace elegant edges around eaves and valleys for a tailored finish. This is the discreet luxury that ensures beauty endures—protection with poise.


Secure your roof with WeatherLock Mat—lightweight, grippy, and built to keep water out—order your 200-sq ft roll today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26997746759

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4.9 ★★★★★
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Christy Lawler
Lake Worth, US
★★★★★ 5
Helped My Texture & Pores So Much
Size: 2.03 Fl Oz (Pack of 1)
I bought this mainly to help with skin texture and the appearance of my pores, and it has honestly worked really well. After using it consistently, my skin feels noticeably smoother and looks more refined overall. I’ve especially noticed a difference around areas where I tend to have larger pores and uneven texture. My skin looks softer, more even, and makeup applies much more smoothly now. The serum itself feels lightweight, absorbs nicely, and doesn’t leave my skin sticky or greasy. It layers well with the rest of my skincare routine and hasn’t irritated my sensitive skin at all. I also love that the jumbo size lasts a long time, so it feels like a really good value for the amount you get. Definitely happy with this purchase and would repurchase again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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Lena
Bozeman, US
★★★★★ 5
Surprisingly Effective – Smoother, Firmer, More Hydrated Skin!!!
Size: 1.01 Fl Oz (Pack of 1), Size: 1.01 Fl Oz (Pack of 1)
I decided to try the FRANKLY Closer Serum after seeing it listed as Amazon’s Choice and noticed it had been purchased 6K+ times in the past month  and I can see why! This serum has been a great addition to my skincare routine. The texture is lightweight and absorbs quickly, leaving no sticky residue. It feels hydrating right away, and over time, I’ve noticed my skin looks smoother and more refined, especially around my pores and T-zone. It doesn’t clog pores, which is important for my acne-prone skin, and it layers well under makeup or sunscreen. I appreciate the powerhouse ingredients like 9 peptides, vegan collagen, adenosine, and PHA  they’ve helped improve my skin’s elasticity and texture without irritation. The glow is real, and I can see that “glass skin” look starting to come through with consistent use. The 1.01 fl oz size may seem small, but a little goes a long way. The pump bottle is hygienic and easy to use, and the overall packaging feels clean and modern. If you’re looking for a gentle, multi-tasking anti-aging and pore-refining serum, this one is a great value  and it lives up to the hype.
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Reviewed in the United States on July 15, 2025
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Cindy
Battle Creek, US
★★★★★ 5
The best pore reducer, even on older complexions!
Size: 2.03 Fl Oz (Pack of 1)
Nothing has ever worked reducing my enlarged cheek and nose pores over the years. Now I've finally found something that works. By the second day there was noticeable results and by the end of the first week even the small wrinkles under my eyes was gone! I use it with my normal skin care routine but I won't do without this again.
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Reviewed in the United States on April 8, 2026
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YS
Los Angeles, US
★★★★★ 4
Good and Hydrated
Size: 1.01 Fl Oz (Pack of 1)
It’s very good and hydrates very well. Not a fast or much improvement on pores. But very good to hydrate your skin.
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Reviewed in the United States on April 1, 2026
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Mrs Money Burns
Chelsea, US
★★★★★ 5
Just buy it
Size: 3.38 Fl Oz (Pack of 1)
I am not even sure I want to do this review because this might mean this product gets sold out. But I wont gate-keep. Get it. This has changed the game with my skin care. I use it twice a day and let me tell you, the compliments I get are incredible. It is not greasy at all, absorps quickly, super light weight and does not irritate my skin. My skin is glass smooth. I have bought this for everyone in my life. Male and Female. I use it, let it dry then add moisturizer or sunscreen.
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Reviewed in the United States on May 30, 2026

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