Owens Corning World Headquarters
One Owens Corning Parkway
Toledo, OH 43659
Tel: 1-800-GET-PINK
Web site: http://www.owenscorning.com
WeatherLock® Mat Water-Resistant UnderlaymentThe best multi-purpose underlayment you can buy is WeatherLock Mat. Designed for greater versatility in a variety of applications, this product is one you’ll love to work with.
- Ideal for all underlayment applications, including eaves, rakes and flashing because of its patented design with polymer-coated, mat-faced surface
- Mat-faced design provides for a consistent surface to reduce slipping, sticking and scuffing
- 40% lighter than competitive products, making it easier to load, carry and install
| Construction | |
| Surface: | Polymeric asphalt surface |
| Interior Reinforcement: | Durable Fiberglas® mat |
| Adhesive Styrene: | Mixture of Styrene-Butadiene-Styrene (SBS) and asphalt |
| Removable Backing: | Split-sheet peel-away backer sheet |
| Property | Typical Values (1 sq. roll) | Typical Values (2 sq. roll) |
| Length: | 33.3 ft. (10.2 m) | 66.7 ft. (21.3 m) |
| Width: | 3 ft. (.91 m) | 3 ft. (.91 m) |
| Area: | 100 sq. ft. (9.3 m2) | 200sq. ft. (19.4 m2) |
| Applicable Standards & Codes | ||
| UL Class A, Class C | ||
| Uniform Building Code Tables 15B-1, 15B-2, 15D-1,and 15D-2 | ||
| ICBO ES ER 4991 |
| Physical Properties | ||
| Property | Test Method | Typical Values |
| Thickness | - | 42 mils |
| Slip Resistance | Asphalt Saturated Felt | Passed |
| Tensile Strength Longitudinal (md) Transverse (cd) | ASTM D 412 | 48 lbs/n 35 lbs/in |
| Elongation at Break (modified bitumen portion) | ASTM D 2523 | 250% |
| Permeance | ASTM E 96 | .05 max |
| Adhesion to Plywood, 40°F | ASTM D 903 | 1.0 lbs/in |
| Adhesion to Plywood, 75°F | ASTM D 903 | 6.0 lbs/in |
Tear Resistance | ASTM D 4073 | 20 lbs/in 20 lbs/in |
| Sealability around Nail | ASTM D 1970 | Passed |
| Low Temperature Flexibility | ASTM D 1970 | Passed |
| Waterproofing integrity after Low Temperature Flex | ASTM D 1970 | Passed |
| Waterproofing Integrity of Lap | ASTM D 1970 | Passed |
* All values are approximate. See actual warranty for complete details, limitations
and requirements, USA only.
WeatherLock® G Water-Resistant Underlayment
WeatherLock G applies easily and consistently in all temperatures and climates.
- Unmatched dual-layer construction optimizes performance
- Rubberized bottom layer increases flexibility and provides greater surface area to improve adhesion
- Top layer asphalt composition reduces the number of loose granules, allowing for better traction and provides more versatility in hot weather
- Can be easily repositioned on roof
- Film backer is designed for easy removal, even in high temperatures
| Construction | |
| Surface: | Granulated asphalt surface |
| Interior Reinforcement: | Durable Fiberglas® mat |
| Adhesive Styrene: | Mixture of Styrene-Butadiene-Styrene (SBS) and asphalt |
| Removable Backing: | Split-sheet peel-away backer sheet |
| Property | Typical Values* (1 sq. roll) | Typical Values* (2 sq. roll) |
| Length: | 33.3 ft. (10.2 m) | 66.7 ft. (21.3 m) |
| Width: | 3 ft. (.91 m) | 3 ft. (.91 m) |
| Area: | 100 sq. ft. (9.3 m2) | 200 sq. ft. (19.4) m2 |
| Applicable Standards & Codes |
| UL Class A, Class C |
| Uniform Building Code Tables 15B-1, 15B-2, 15D-1,and 15D-2 |
| ICBO ES ER 4991 |
| Physical Properties | ||
| Property | Test Method | Typical Values |
| Thickness | - | 55 mils |
| Slip Resistance | Asphalt Saturated Felt | Passed |
| Pliability | 1” Mandrel Bend at -20ºF | Passed |
| Tensile Strength Longitudinal (md) Transverse (cd) | ASTM D 412 | 48 lbs/in 35 lbs/in |
| Elongation at Break (modified bitumen portion) | ASTM D 2523 | 250% |
| Permeance | ASTM E 96 | .05 max |
| Adhesion to Plywood, 40°F | ASTM D 903 | 1.0 lbs/in |
| Adhesion to Plywood, 75°F | ASTM D 903 | 6.0 lbs/in |
| Tear Resistance Longitudinal Transverse | ASTM D 4073 | 20 lbs 20 lbs |
| Sealability around Nail | ASTM D 1970 | Passed |
| Low Temperature Flexibility | ASTM D 1970 | Passed |
| Waterproofing integrity after Low Temperature Flex | ASTM D 1970 | Passed |
| Waterproofing Integrity of Lap | ASTM D 1970 | Passed |
WeatherLock® P Water-Resistant Underlayment
WeatherLock P meets cold-weather challenges without flinching. This product is designed to stay flexible, even when the temperature drops.
- Polyethylene surface and rubberized asphalt combine to provide the flexibility and adhesion necessary to conform around irregular shapes, even in cold-weather applications
- Cross-laminated surface with patented raised surface lines adds traction and provides a seal around nails that helps prevent water penetration
- Non-stressed polyethylene surface offers longer exposure without edge curling, while providing a high-performance lap seal
| Construction | |
| Surface: | High-strength polyethylene |
| Adhesive: | Mixture of Styrene-Butadiene-Styrene (SBS) and asphalt |
| Removable Backing: | Paper backer |
| Property | Typical Values (2 sq. roll) |
| Length: | 75 ft. (22.86 m) |
| Width: | 3 ft. (.91 m) |
| Area: | 255 sq. ft. (20.9 m2) |
| Applicable Standards & Codes | |
| UL Class A, Class C | |
| Uniform Building Code Tables 15B-1, 15B-2, 15D-1,and 15D-2 | |
| ICBO ES ER 4991 |
| Physical Properties | ||
| Property | Test Method | Typical Values |
| Thickness | - | 40 mils |
| Slip Resistance | ASTM D 1970 | Passed |
| Tensile Strength Longitudinal (md) Transverse (cd) | ASTM D 412 | 30 lbs/n 28 lbs/in |
| Elongation at Break (modified bitumen portion) | ASTM D 2523 | 300% |
| Permeance | ASTM E 96 | .001 |
| Adhesion to Plywood, 40°F | ASTM D 903 | 2.8 lbs/in |
| Adhesion to Plywood, 75°F | ASTM D 903 | 13.6 lbs/in |
| Tear Resistance Longitudinal Transverse | ASTM D 4073 | 58.5 lbs/in 64.3 lbs/in |
| Sealability around Nail | ASTM D 1970 | Passed |
| Low Temperature Flexibility | ASTM D 1970 | Passed |
| Waterproofing integrity after Low Temperature Flex | ASTM D 1970 | Passed |
| Waterproofing Integrity of Lap | ASTMD 1970 | Passed |
| Thermal Stability | ASTM D 1204 | Passed |
* All values are approximate. See actual warranty for complete details, limitations
and requirements, 
WeatherLock® Metal Water-Resistant Underlayment
Designed to stand up to the most rigorous conditions, WeatherLock Metal is specially engineered to handle the extreme demands of metal roofing.
- Designed to withstand expansion and contraction of metal roof systems during the job and after installation
- Polyester-faced, non-abrasive surface is specially designed for metal roof applications and allows for a higher melt point than polyethylene film products
- Withstands high temperatures without fusing to overlying metal roof
- Resists UV degradation when left in open exposure
| Construction | |
| Surface: | Polyester non-woven mat fabric |
| Adhesive: | Rubberized asphalt adhesive backing with silicone released poly. |
| Removable Backing: | Split-sheet peel-away backer sheet |
| Property | Typical Values 2 sq. roll (200 sq. ft) |
| Length: | 66.7 ft. (20.3 m) |
| Width: | 3 ft. (.91 m) |
| Area: | 200 sq. ft. (18.6 m2) |
| Applicable Standards & Codes | |
| UL Class C | |
| Uniform Building Code Tables 15B-1, 15B-2, 15D-1, and 15D-2 | |
| ICBO ES ER 4991 |
| Physical Properties | ||
| Property | Test Method | Typical Values |
| Thickness | - | 40 mils |
| Slip Resistance | ASTM D 1970 | Passed |
| Tensile Strength Longitudinal (md) Transverse (cd) | ASTM D 2523 | 86 lbs/n 59 lbs/in |
| Elongation at Break (md) (cd) | ASTM D 2523 | 44.5% 58.8% |
| Permeance | ASTM E 96 | .08 |
| Adhesion to Plywood, 40°F | ASTM D 903 | 4.0 lbs/in |
| Adhesion to Plywood, 75°F | ASTM D 903 | 2.0 lbs/in |
| Tear Resistance Longitudinal Transverse | ASTM D 4073 | 107 lbs/in 72 lbs/in |
| Sealability around Nail | ASTM D 1970 | Passed |
| Low Temperature Flexibility | ASTM D 1970 | Passed |
| Waterproofing integrity after Low Temperature Flex | ASTM D 1970 | Passed |
| Waterproofing Integrity of Lap | ASTM D 1970 | Passed |
| Thermal Stability | ASTM D 1204 | Passed |
* All values are approximate. See actual warranty for complete details, limitations and requirements, USA only.