Weather Watch
Instructions, Data Sheets, Codes

Weather Watch^® Leak Barrier

Protect Your Home From Wind-Driven Rain And Damaging Ice Dams With A Waterproof Leak Barrier

IMPORTANT NOTE: The product Information Sheet for Weather Watch^® Leak Barrier with a print date of 10/07 listed the incorrect information that Weather Watch Leak Barrier was made with a “high temperature compound” and was “suitable for use with most metal roof applications”. This product is not made with a high temperature compound and it is not suitable for use under any metal roof. The incorrect information was listed on the web site from October 15th -18th 2007 and distributed in hard copy form, October 1st – October 18th 2007.

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^®, 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^® leak barrier is a key part of the GAF-Elk Smart Choice^® Roof System Solution.

Don’t Put Your Home At Risk

The Codes Are Clear...
Protection against ice dams is required* 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 “Colder Zone”
(shown below)†
But Be Prepared...
Ice dams can still occur in areas where the average temperature is above 25°F (not to mention wind-
driven rain)
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

Looks Better...
Fiberglass reinforcement helps resist wrinkling and buckling – lays flatter under shingles
Meets Building Codes...
In the North, where a leak barrier MUST be used*
Peace Of Mind...
Benefits from the same warranty term as the asphalt shingle it is applied under, up to a maximum of 30 yrs**

Professional’s Best Choice

Helps Eliminate Waste...
Special adhesive allows for one-time repositioning, but aggressively adheres over time
Safer Installation...
SlipGuard™ mineral surface improves footing
Dependable...
Self-seals around nails or metal roofing fasteners
Saves Labor...
Split-back release film peels off in layers for faster installation and greater homeowner value
Convenient...
1.5 and 2.0 square roll sizes
Great For Emergencies...
Can be left exposed for up to 60 days if necessary

*Check local building codes for specifications in your area

** See ltd. warranty for complete coverage and restrictions

†Source: International Building Code (ICBO), IRC, UBC, NBC, and SBC

Specifications

GAF-Elk Weather Watch ^® 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	1.5 Square Roll	2.0 Square Roll
Roll length	50 ft (15.2 m)	66.7 ft (20.3 m)
Roll width	36 in (0.9 m)	36 in (0.9m)
Sq. feet per roll	150 sq ft (13.9 sq m)	200 sq ft (18.6 sq m)