You should install ice and water protector before other underlayments including roof felt.
How to put ice shield on a roof.
Around roof features like dormers and chimneys you should place ice and water protector below flashing.
In other words the nails used to attach the roofing do not puncture the product.
When installed correctly the ice and water shield will extend up the roof from the fascia board to a minimum of 2 past the exterior wall.
Peel back 300 600 mm 1 2 ft of release liner align membrane.
If two courses of iko s ice and water protector are needed widthwise you should apply the bottom course first.
If an ice dam occurs on your roof and water backs up under the shingles it will seep down into your home through the nail holes holding the shingles.
It should be installed behind the gutter and over the top of the fascia board eliminating the gap between the fascia board and first roof board.
If installed properly this reliable roofing underlayment can save homeowners 18 000 in reroofing costs.
Ice and water shield is a great product that can be used in spots to protect the most vulnerable areas of your roof or as a whole roof underlayment to protect from ice dams water dams storms and leaking in any area of the country and any weather.
The best products are adhesive backed and come with a puncture proof guarantee.
Cut the membrane into 3 5 m 10 15 ft lengths and re roll loosely.
Install the ice barrier membrane according to the manufacturer s instructions with the drip edge installed on top of the membrane.
Here s how proper installation of grace ice water shield the conventional method.