On Aug 30, 10:53*am, Aaron Fude wrote:
Hi,

On the north side of my house I have moss on the slate roof. I'm
concerned that it's pushing the slates apart. My roof is 90 years old.

How do I combat this problem?

Thanks,

Aaron

If it doesn't leak ignore it. Otherwise, contact a slater (not a
roofer) and get the right kind of help to rermedy the problem.

Joe