How do I seal the roof of our motor home?
We have a '96 London Aire Motorhome. The roof started leaking a year and a half ago. We hired someone to put a sealant on it last summer. It worked for awhile, but this year we've had heavy amounts of snow & have noticed it's leaking again. It's not to the extent of seeing it dripping water, but I can see new wet spots in the ceiling. Help!!