To pull the rubber roof, something must be sagging from the weight. You may
want to check the framing to see if it needs beefing up. Only other thing
could be contraction from the cold but I can't imagine it would contract
that much if properly installed.

"CJ" wrote in message
oups.com...
I have a flat rubber roof that leaks very badly when it snows and then
rains. It happened twice this year during two storms between Feb and
March. The weight of the snow and rain somehow must pull the rubber
away from where it should cover the roof from the outside elements.
When it rains hard it never leaks.

There is a vent pipe and a square opening with cover (to gain access)
near the leak.

Any ideas on what to do?

CP