How To Install Grace Ice And Water Shield

Install grace underlayment to form water shedding laps 1.

How to install grace ice and water shield. Peel back 300 600 mm 1 2 ft of release liner align membrane. Peel the release liner from the membrane. There are several reasons for this. Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.

You should install ice and water protector before other underlayments including roof felt. In 1978 grace construction products developed the first self adhered roofing underlayment grace ice water shield. Proper installation of grace ice water shield the conventional method. When water and ice is installed should it be adhesive backed and should it be on the bare sheathing at first i was going to give my standard response but i thought this would be an excellent teaching moment.

Cut the membrane into 10 15 ft 3 5 m lengths and reroll loosely. Extend grace underlayment on the wall sheathing above the highest expected level of snow and ice 3. Grace the manufacturer of ice water shield advises that its peel and stick membrane should be installed before the drip edge. I d imagine you want it as tight as possible to the sheathing all the way into the v as opposed to up a bit in the center of the valley like you see on roll roofed open valleys.

It has been a go to product that building professionals have trusted for over 37 years to protect their projects. Bruce asked me the following question. Apply roof covering material at temperatures of 40 f 5 c or higher. If ice ever backs up from a clogged gutter the ice can get under the drip edge and reach the plywood.

The metal flashing is installed over the grace underlayment 4. If two courses of iko s ice and water protector are needed widthwise you should apply the bottom course first. 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. Press the membrane in place with heavy hand pressure.

Around roof features like dormers and chimneys you should place ice and water protector below flashing. Dave is an expert on the topic of how proper roofing underlayment installation can help protect from ice dam. Extend grace underlayment on the wall sheathing above the highest expected level of snow and ice 2.