Apply GRACE ICE & WATER SHIELD® underlayment in fair weather when the air, roof deck, and membrane are at temperatures of 40°F (5°C) or higher. Apply roof covering material at temperatures of 40°F (5°C) or higher. Cut the membrane into 10–15 ft (3–5 m) lengths and reroll loosely. via
Do you nail down ice and water shield?
When nails penetrate the ice and water shield on the roof, the rubberized nature of the material creates a gasket effect on the shaft of the nail. Leaks simply don't happen. Not only does ice and water shield stop leaks caused by ice dams, but it also stops leaks created by fierce wind-driven rain. via
Where do you put ice and water shield on roof?
How Should Ice and Water Protector be Installed on a Roof? Ice and water protector needs to be installed directly onto the roof deck after you have placed the drip edge at the eave. (The drip edge will be installed over the ice and water protector and other underlayments at roof rake edges.) via
Is it OK to put ice and water shield on entire roof?
You may apply an ice and water protector on your entire roof, but this can also be costly overall. Instead, install it first on critical areas of your roof before you consider covering the whole roof. Install your ice and water protector covering at least 3 feet from the edge of your roof. via
How do you install an ice barrier on a roof? (video)
Is ice and water shield better than felt?
Roofing ice and water shield may look like traditional felt paper, but it's vastly different in performance. Ice and water shield is a far superior product compared to basic roofing felt paper. via
How much should ice and water shield overlap?
A single length of WaterGuard Rain & Ice works best, but if that isn't possible, successive overlaps should be 6". Firmly hand-roll the laps to ensure a complete, water- tight bond. via
What is the best roofing underlayment?
Tyvek is a good choice as an underlayment to roofing products other than asphalt shingles—things like cedar shingles and metal roofing. It's also a fully weatherproof underlayment, which is a huge advantage in areas that see a lot of extreme weather events. via
How do you calculate ice and water shield on a roof?
#xactimate line item of the day, Ice and Water Shield – (RFG IWS). Standard Calculation = (EAVE*6) + (VAL*3) 1507.2. via
What goes first drip edge or ice and water?
The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge. This lets any water that gets on the roof run down the underlayment and over the drip edge. via
How long can you leave ice and water shield exposed?
The original, fully-adhered roofing underlayment, Grace Ice & Water Shield®, now has an extended exposure limit of 90 days. via
Do you put tar paper over drip edge?
Method 1: Install the ice-barrier membrane according to the manufacturer's instructions with the drip edge installed on top of the membrane. Then install regular roofing underlayment (tar paper) over the top of the drip edge (and over the ice barrier) and continuing all the way up the roof. via
Does flashing go under or over tar paper?
The drip edge should be over the paper at the eaves, and under along the rake. Look at Roy's pictures from google. Shows just the opposite. Paper goes over the flashing at the eave, under at the rake. via
Should drip edge go over or under felt?
1 Answer. It depends on where the drip edge is. At the side, or gabels, of a roof, the drip edge goes over the roofing felt. At the bottom of the roof, the drip edge goes under the roofing felt. via