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.
Roof ice and water shield installation.
By creating a barrier at the most vulnerable areas of your asphalt shingle roof at the eaves and rakes in valleys around chimneys etc weatherwatch mineral surfaced leak barrier helps prevent leaks due to water backing up in your gutters wind driven rain and in the north damaging ice dams.
Membrane installation 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.
Ice and water protector needs to be installed directly onto the roof deck after you have placed the drip edge at the eave.
Peel back 300 600 mm 1 2 ft of release liner align membrane.
Grace ice and water shield fully adhered smooth surface roofing underlayment provides best in class roof leak protection against wind driven rain and ice dams.
Ice and water shield products are hidden by the finished roofing materials.
Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.
If installed properly this reliable roofing underlayment can save homeowners 18 000 in reroofing costs.
Grace ice and water shield roofing underlayment a registered trademark of gcp applied technologies is the name that contractors trust the most to protect their reputations.
Here s how proper installation of grace ice water shield the conventional method.
Does ice and water shield protect against hurricanes.
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.
Published on aug 25 2017 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 installation tricks.