m35603 wrote:
Take another look, the white stuff is frost on the
outside of the house, the black areas are where
the frost melted. There is no problem, unless you
consider all the are that isn't frost covered.

The black areas are there even in 100 degree temperature in the middle
of August. I think somebody suggested it could be mold.

Angie


No. the black areas are just the shingles.