volvolugnut wrote: ↑13 May 2021, 08:37 I had to google grace ice shield. It is not a big issue in the warm and dry south (usually). When my last roof was installed, I used architectural shingles. They are heavier and the insurance rate was lower. The insurance reduction nearly paid for the additional shingle cost. The issue we have here is hailstorms. We can expect to replace a roof every 10 to 15 years because of single or multiple hail storms.
volvolugnut
After a heavy snow, we get ice dams. The snow melts at the roof, refreezes, which creates a blockage for water , usually at the edge of the roof. It then backs up under the shingles and into the house
Not a problem for an event, but if it happens every year, the wood will rot. The grace shield stops the water from coming in
The alternative is to roof rake your snow off , which amuses me because most only rake the edge.
Duh.
