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Model #WLFL

225 sq. ft. WeatherLock Flex Flexible Self-Sealing Ice and Water Shield Leak Barrier

  • Flexible ice and water shield for vulnerable sections of roof
  • Slip-resistant surface for great traction and safe installation
  • Strong self-adhesive barrier and seals tightly around nails
  • See More Details

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Product Overview

Owens Corning The Pink Panther Trust is a Beautiful Thing

America's Most Trusted And Recognized Brand In Roofing

77% of homeowners feel it is important to trust the shingle brand of their roof and Owens Corning is 3X more trusted than other shingle brands.*

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Total Protection Is More Than Shingle Deep

It takes more than shingles to protect your home. It takes an integrated system of components and layers designed to help perform in three critical areas.

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More Than Just A Roof

Owens Corning is a market leader in shingles, components, underlayment and specialty products.

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Helps Create a Water-Proof Barrier

Powerful two-part protection helps keep moisture away from the roof deck.

Roof diagram showing how shingles protect

Helps Protect Against Nature's Elements

Three kinds of shingles work together for specialized protection on each part of the roof.

Roof diagram showing air flow

Optimize Airflow In Your Attic

Proper ventilation helps create a balanced flow where warm, humid air is conditionally replaced by cool, dry air.

Attic showing pink fiberglass insulation

+ COMFORT. Attic Insulation

Optimize value, comfort and performance by adding attic insulation.

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Women's Choice Award 2019

This award is given by women for women and is based on a national survey that measures brand preference by female consumers.

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Inspiration

Your roof is more than just protection for your home. It's an expression of your personality and style and can be up to 40% of the exterior of your home!

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Make More Possible

Owens Corning is a global leader in engineered materials for roofing, insulation and composites.

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Expanding Our Impact

We have a commitment to care for people and the planet while delivering a material difference to all stakeholders.

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World Class Sustainability

For us, sustainability is about meeting the needs of the present while leaving the world a better place for the future.

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OC Gives Back

We make a difference by empowering people and the communities in which we live and work.

WeatherLock Flex Self-Sealing Ice and Water Barrier provides excellent protection against water infiltration resulting from freeze/thaw cycles wind driven rains and normal water flow around eaves, valleys, vents, chimneys and skylights. Plus it can be applied over existing poly surface ice and water barriers so re-roofing is easy and less costly. For optimal protection, apply to entire roof deck on 2:12 to 4:12 pitch roofs. Ensure proper ventilation is met when applied over the entire roof deck.
  • High performance-flexible and pliable poly surface
  • Aggressive self-adhesive helps prevents water migration
  • Slip-resistant surface for excellent traction and safe installation
  • Seals tight around nails
  • UV exposure up to 30 days
  • Weatherlock G does not replace the starter shingle strip. Owens Corning Starter Shingle Roll can be installed over Weatherlock Leak Barrier products.
  • WeatherLock Specialty Tile and Metal Self-Sealing Waterproofing Underlayment should be used with a metal roof.
  • Shop Owens Corning Total Protection Roofing System:
  • Step 1: Seal – Ice & Water Barrier and Underlayment properly seals your roof and helps prevent rot and mold
  • Step 2: Defend – Owens Corning shingles add a tough, yet beautiful layer of defense with strong adhesion that resists blow offs and helps shed water away
  • Step 3: Breathe – proper ventilation reduces heat and moisture buildup to prevent ice damming, roof deterioration, and mold infestation
  • Step 4: Comfort – Add comfort and energy performance with proper attic insulation
  • In order to meet the requirements for the Total Protection Roofing System Limited Warranty, Owens Corning shingles, Owens Corning Hip & Ridges shingles and two additional Owens Corning roofing accessories must be installed.
  • California residents

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar Underlayments & Leak Barriers

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225 sq. ft. WeatherLock Flex Flexible Self-Sealing Ice and Water Shield Leak Barrier
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BrandGCP Applied TechnologiesOwens CorningGAFGAF
NameGrace Select 36 in. x 65 ft. Roll Self Adhered Roofing Underlayment (195 sq. ft.)225 sq. ft. WeatherLock Flex Flexible Self-Sealing Ice and Water Shield Leak BarrierTiger Paw 1000 sq. ft. Premium Synthetic Roofing Underlayment RollDeck-Armor 1000 sq. ft Premium Breathable Synthetic Roofing Underlayment Roll
Price
Ratings
(46)
(19)
(21)
(3)
Underlayment/Barrier TypePeel & Stick UnderlaymentLeak BarrierSynthetic UnderlaymentSynthetic Underlayment
Application MethodPeel & StickPeel & Stick,Self AdheredNailNail
FeaturesHigh Wind Resistant,Water ResistantWaterproofWaterproofAlgae Resistant,Waterproof
Unrolled length (ft.)6575250222
Product Width (in.)3636 in4854
MaterialAsphaltAsphaltFeltFelt
Roofing Product TypeUnderlaymentUnderlaymentUnderlaymentUnderlayment
Fire Rating (UL 790)Class AClass AClass ANo Rating Available
Product Thickness (in.)0.0251969 in.048 in0.0313 in9 in
View ProductView ProductView ProductView Product

Specifications

Dimensions

Coverage Area (sq. ft.)
225 ft²
Product Thickness (in.)
.048 in
Product Width (in.)
36 in
Unrolled length (ft.)
75

Details

Application Method
Peel & Stick,Self Adhered
Color Family
Black
Features
Waterproof
Fire Rating (UL 790)
Class A
Material
Asphalt
Product Weight (lb.)
71.5 lb
Returnable
90-Day
Roofing Product Type
Underlayment
Squares (100sq. Ft)/Roll
2.25
Surface Recommended
Wood
Texture
Smooth
Underlayment/Barrier Type
Leak Barrier

Warranty / Certifications

Manufacturer Warranty
N/A

Questions & Answers

33Questions13Answers

How long can the product be exposed to the weather before shingles are applied? I will be doing a 700 sf roof solo so it will take some time

Asked by Joe February 27, 2021
2
Answers

Hello Joe, Owens Corning WeatherLock Flex should not be left exposed for more than 30 day. Prolonged exposure to wind, sun and weather will adversely affect this products installation and performance. Thank you for your inquiry!

Will this product adhere to FOAMULAR 150 Extruded Polystyrene (XPS) Rigid Foam Insulation???

Asked by Kent July 24, 2020
1
Answer

Hello Kent, we do not have recommendations for installing WeatherLock Flex directly to Foamular. Thank you for your inquiry!

flat porch roof?

Asked by splion July 19, 2020
1
Answer

Hello splion, WeatherLock requires a minimum slope of 2:12. Thank you for your inquiry!

What is the width and length of this product?

Asked by Susan March 25, 2020
1
Answer

Hello Susan - Width is 36 inches, unrolled length is 75 ft. Thank you for your inquiry!

Will product color leach onto roof's facial boards due to heat or moisture?

Asked by John March 23, 2020
2
Answers

Hello John - The color in this product will not leach onto fascia boards. Thank you for your inquiry!

Would this product work if used vertically? I have shed with tar paper under the siding . The sid...

Asked by al March 10, 2020
1
Answer

Hello al - WeatherLock Flex is not designed for this type of application. Thank you for your inquiry!

Can I use this on exterior cement block walls on my garage?

Asked by johnlittleman1 March 6, 2020
1
Answer

Hello johnlittleman1 - WeatherLock Flex is not designed for this type of application. Thank you for your inquiry!

our roofer used this product on a roof in AK, installation was nearly complete when we had unexpe...

Asked by raven February 11, 2020
1
Answer

Hello raven - More information is needed in order to assist you. Please contact an Owens Corning representative at 1-800-GET-PINK for assistance. Thank you for your inquiry!

how many liner feet does this cover?

Asked by joe January 24, 2020
1
Answer

Hello Joe - coverage area is 225 sq. ft. Thank you for your inquiry!

so you have a film on the back that needs to be removed so it will stick to the wood roof. Is tha...

Asked by jim July 18, 2019
2
Answers

Hi jim, Weatherlock G does have a plastic release backer. This backer is split. installation instructions can be found on Home Depot's link for this product. Thanks for your inquiry!

225 sq. ft. WeatherLock Flex Flexible Self-Sealing Ice and Water Shield Leak Barrier - page 2

Customer Reviews

  • 4.5
    out of 19 reviews
  • 60% recommend this product
Filter by:
Showing 1-10 of 19 reviews
by LEN
Product arrived exactly when it was scheduled. Very good experience...
Product arrived exactly when it was scheduled. Very good experience
by DONALD
This underlayment is awsome material. Tough. Just have to be...
This underlayment is awsome material. Tough. Just have to be careful get it place where you want. Once you remove liner its sticks right where its at. Good product.
by HomeDepotCustomer
Do not know how well it works but putting down is next to impossible. Paper on the backside tears...
Do not know how well it works but putting down is next to impossible. Paper on the backside tears and it is just so sticky. Can't do it by yourself. I have use other s ice seal worked well and I could put it down by myself. Will never use again. It may be great stuff but to labor intense.
by hoosierdome
Response from OwensCorningAug 31, 2020
Dear hoosierdome,

We are sorry to hear about your experience with our product. We would welcome you to contact us at 800-Get-Pink to discuss further.

Thank you!
Owens Corning
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
1 person found this helpful
5 Star Review
Rating provided by a verified purchaser
by HomeDepotCustomer
Worked better than I thought sticks like tape exactly what I wanted.
Worked better than I thought sticks like tape exactly what I wanted.
by Mike
it worked swell...
it worked swell
by Stephen
Not as sticky as the Grace Ice and water but...
Not as sticky as the Grace Ice and water but easier to lay because of it. Also temp was cold. Otherwise a good cheaper alternative.
by PHIL
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 19 reviews