Where To Put Ice And Water Shield On Roof

When using for full deck protection make sure proper ventilation and moisture cont rol issues are addressed.

Where to put ice and water shield on roof.

With the code recommended installation of the ice barrier over the drip edge water can back up at the eaves edge and get behind the vertical leg of the drip edge where it can end up flowing into the joint between the fascia and the roof sheathing. Building use and internal moisture can increase condensation beneath the roof deck. In addition to installing it along the edge of the overhangs about 6 9 feet up the roof a good roofer will almost always put ice water shield in the valleys of your roof and in some cases it should be installed along the eaves as well. Most commonly roofing professionals install ice and water protector on eaves rake edges overhangs and valleys as.

Now if you live down in florida where hurricanes are an issue and shingles get ripped off of roofs and rain flies sideways on a regular basis down there typically they ll put ice and water shield sometimes across the entire roof. Water can get under the head of the nail and seep down the shaft of the nail where it passes through the felt paper. Ice water shield should be installed anywhere there s a chance of water getting under the shingles. I am about to reroof using grace ice and water shield for the first two courses then a synthetic underlayment above.

When this happens you get leaks into your home. So in our area of the country we typically only put this up to the first three feet. The roofer still needs to install a small strip of the ice and water shield at the lower edge of the roof. Ice is not used on the entire roof other underlayments should be lapped position 6 onto waterguard rain ice applications like roof valleys.

I was considering applying the synthetic underlayment over the ice and water as well as i have read that shingles will often adhere so badly to i w products that you have to take the decking out to reroof 20 30 years down the line. If you have a more complicated roof with valleys skylights dormers vent pipes or chimneys it s a good idea to have ice and water shield installed in and around these areas as well as along the eves. But ice dams can form in the gutter as well as on the roof.