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Weather Watch® XT Leak Barrier
A Quality Leak Barrier Will:
Create a 100% watertight seal that keeps water out at the most vulnerable areas of your roof (at the eaves and rakes, in valleys, around chimneys, etc.).
Weather Watch® XT, a quality leak barrier, will:
- Protect your home by preventing costly repairs due to wall or ceiling staining
- Help prevent leaks due to water damming in your gutters, wind-driven rain, and, in the North, damaging ice dams
Weather Watch® XT Mat-Surfaced Leak Barrier is a key part of the GAF Lifetime Roofing System, and has even earned the prestigious Good Housekeeping Seal. (See Details)
Don’t Put Your Home At Risk
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The Codes Are Clear...
Protection against ice dams is required
(See Details)
at eaves wherever the January average temperature is 25®F or lower or where
there is a possibility of ice forming in the eaves - i.e., the area labeled "North".
(See Details)
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But Be Prepared...
Ice dams can still occur in areas where the average temperature is above 25°F (not to mention wind-driven rain)
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Avoid The Risks...
If you are in an area that requires leak barrier protection – and if there is a leak – you could be putting your insurance coverage at risk by not installing it!
Homeowner’s Best Choice
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Looks Better...
Fiberglass reinforcement helps resist wrinkling and buckling – lays flatter under shingles
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Meets Building Codes...
In the North, where leak barrier MUST be used (See Details)
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Peace Of Mind...
Up to a Lifetime ltd. warranty when used on Lifetime Shingle roofs, (See Details) up to a 25-year ltd. warranty when used on non-Lifetime Shingle roofs, and up to a 12-year ltd. warranty when used with other approved roof membranes. (See Details)
Professional’s Best Choice
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Dependable...
Self-seals around nails or metal roofing fasteners
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Safer...
Specially coated surface with added tack for extra traction under foot
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Saves Labor...
Dual-side selvage and split-back release film speed installation for greater homeowner value
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Convenient...
2.0 square roll size
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Great For Emergencies...
Can be left exposed for up to 60 days (steep-slope applications only) if necessary
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Versatile...
Weather Watch® Leak Barriers are excellent vapor retarders exceeding ASTM D1970 requirements with a .05* vapor permeance (*Based on internal testing)
Specifications
GAF Weather Watch® XT Leak Barrier EXCEEDS the following requirements
of ASTM D1970
| Property | Method | Requirement |
| Thickness (mils) | D5147 | Min. 40 |
| Tensile strength MD (lbf/in) | D2523 | Min. 25 |
| Tensile strength CMD (lbf/in) | D2523 | Min. 25 |
| Elongation at break, modified bitumen Portion – MD and CMD (%) | D2523 | Min. 10 |
| Adhesion to plywood at 75°F (lbf/ft-width) | D903 | Min. 12 |
| Adhesion to plywood at 40°F (lbf/ft-width) | D903 | Min. 2 |
| Thermal stability (mm) | D1204 | Max. 3 |
| Low temperature flexibility ( –20°F) | D1970 | Pass |
| Tear resistance MD (lbf) | D4073 | Min. 20 |
| Tear resistance CMD (lbf) | D4073 | Min. 20 |
| Moisture vapor permeance (U.S. Perms) | E96 A | Max 0.1 |
| Sealability around nail | D1970 | Pass |
| Waterproof integrity after low temperature flexibility | D1970 | Pass |
| Waterproof integrity of lap seam | D1970 | Pass |
Product Specifications (Nominal)
|
| Specification | 2.0 Square Roll |
| Roll length | 66.7 ft (20.3 m) |
| Roll width | 36 in (0.9m) |
| Sq. feet per roll | 200 sq ft (18.6 sq m) |
Applicable Standards
- ICC-ES Evaluation Report pending
- Meets the performance criteria of ASTM D1970
- UL Classified. See complete marking on product
Precautionary Note: Due to the added tack in Weather Watch® XT, asphaltic residue may be tracked over exposed surface. Protect walking surfaces to avoid staining, especially in hot weather.
Note: See application instructions for complete information.
For low-slope applications and other uses, see www.gaf.com.
Documents
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Application Instructions
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Weather Watch® XT - Application Instructions
12/01/2009
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Weather Watch® XT - Application Instructions
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Brochures & Data Sheets
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Warranty Information
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GAF Shingle & Accessory Warranty
01/11/2012 -
GAF Shingle & Accessory Warranty - French ver.
01/11/2012 -
GAF Shingle & Acessory Warranty - Spanish ver.
01/11/2012 -
Golden Pledge® Limited Warranty
01/11/2012 -
System Plus Limited Warranty
01/11/2012 -
Weather Watch XT® - Limited Warranty
01/10/2011 -
WeatherWatch XT Limited Warranty
01/01/2012
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GAF Shingle & Accessory Warranty
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Code - Miscellaneous
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Codes - Florida Building Code Reports
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Material Safety Data Sheet (MSDS)
WeatherWatch® XT Mat-Surfaced Leak Barrier
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The GAF Lifetime Roofing System has earned the prestigious Good Housekeeping Seal,
which means that Good Housekeeping stands behind the products in this system. (Refer
to Good Housekeeping Magazine for its consumer protection policy.)
See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.
The word "Lifetime" means as long as the original individual owner of
a single family detached residence (or the second owner in certain circumstances)
owns the property where the shingles and accessories are installed. For owners/structures
not meeting above criteria, Lifetime coverage is not applicable. Lifetime ltd. warranty
on accessories requires the use of at least three qualifying GAF accessories and
the use of Lifetime Shingles.


