"Winter" that is not winter, in Canada it is a warm spring or fall day. If
shingles were installed frozen and curled in a Canadian winter (yesterday -5
degrees) I would expect your problems as there is not enough heat in the sun
to soften them and flatten them out. BUT 40 to 60 degrees, as soon as the
sun hits them they should be settling down and flattening out. You should
not have to wait until summer, as the first day over 60 degrees should work.


"Trying to Help" wrote in message
oups.com...
Here's the scoop from my contractor... Due to winter weather (40-60
degrees here in California), the shingles will contract, leaving voids
underneath. He assured me that when summer comes, the shingles will
spread out and laminate to the ones below. He also assured me that for
now, rain will not be an issue. The question I have is, why would the
shingles automatically laminate to one another, just because they're
softer (due to heat)? And once they're laminated, what prevents them
from curling up in the winter? I guess I don't have enough knowledge
on how shingles mate to one another. Any advice would be appreciated.
Thanks.