I need a new flat roof

But is it the wrong time of year to be doing this? Will having it done
in cold weather shorten the life time of the new roof? I am thinking of
expansion and contraction throughout the year.

Also my current roof is green mineral felt. Had a couple of quotes, one
guy would replace with green mineral. The other with green mineral just
around the edges, then something else in the middle (can't remember
name) which is then painted with some silver stuff which reflects the
sun and stops expansion/contraction problems.

Which is better? Which is actually more expensive?

Any comments welcomed.


Thanks,

Steve