In colder regions a good practice is to cover the first 3 feet 36 inches or 0 91 m of roof over heated space with ice and water protector.
Roof repair ice and water shield low pitch.
During winters when there is a lot of snow and ice dams form higher up the roof slope water can pond up behind the dams and reach higher than 36.
As far as grace ice and water i did use it under shingles on the low pitch patio roofs of a retirement community re roof project i did 10 years ago 1 1 2 on 12 pitch.
12 pitch roof with a 12 in.
Roofing ice and water shield is a critically component to any new roofing system especially in cold weather climates.
Ice and water shield.
59 3 8 inches up the roof slope from the drip edge.
Then apply standard asphalt shingles over the membrane.
The membrane will outlast the shingles and seal around all nail penetrations.
Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs.
It was about 36 bucks for a one square roll back then.
Overhang and a 2 6 exterior wall.
Above that is an incomplete double coverage layer of 15 pound roofing felt.
So what s the harm if the ice barrier isn t applied far enough up the roof slope.
All overhangs should also be covered.
The minimum is typically 2 feet 24 inches or 0 60 m above the vertical projection of the inside of the exterior wall.
Looked just like vycor without the printing.
For a low slope residential roof there are two main options.
1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products.