How To Install Ice And Water Shield In A Valley

Make sure equal amounts of the membrane lay on both sides of the valley centerline.

How to install ice and water shield in a valley. The drip edge will be installed over the ice and water protector and other underlayments at roof rake edges you should install ice and water protector before other underlayments including roof felt. Recommended procedures of basic valley flashing installation. Install an underlayment centered in the roof valley. Grace ice water shield introduced in 1978 is our flagship product with over 2 million successful installations in 25 different countries.

Ice and water protector needs to be installed directly onto the roof deck after you have placed the drip edge at the eave. Ice water shield should be installed anywhere there s a chance of water getting under the shingles. On the eaves of your home up to 24 inside the exterior wall this usually means at least 2 rows or 6 feet in every valley 1 row or 3 feet around every pipe before the flashing is installed. The big question is do i install the ice and water shield over or under the felt or synthetic underlayment the next question should i install the iws o.

Firmly hand roll the laps to ensure a complete water tight bond. Grace ice wa. Proper application of roof valleys can be tricky. Learn more at https www gaf c.

One person can install long lengths of ice and water shield to the roof however it is easier for two people to install especially with some new installatio. In this video iko tv host john derosa walks through some examples of how to properly apply effective metal. Then install a non corrosive metal valley flashing of 24 minimum width.