Vinyl siding over wood siding vapor barrier fiber board insulation?
Wednesday, March 26th, 2008Q&A asked:
Confused here. I live in northwestern PA, about 10 miles from Lake Erie. I have wood siding on an old house that has the paint badly peeling off. I’m going to put vinyl siding over this old wood siding. I’ve had different answers from different people about insulation and vapor barriers. The walls are not insulated. So I have old peeling paint on wood siding over uninsulated walls.
Confused here. I live in northwestern PA, about 10 miles from Lake Erie. I have wood siding on an old house that has the paint badly peeling off. I’m going to put vinyl siding over this old wood siding. I’ve had different answers from different people about insulation and vapor barriers. The walls are not insulated. So I have old peeling paint on wood siding over uninsulated walls.
At some point I plan on insulating those walls. So a contractor I used for my roof suggested using celotex fiber board over the wood siding prior to putting on the vinyl. This would also help make the wall flat for putting on the vinyl as well as insulate the house. However, it’s not waterproof is that going to cause a vapor situation which gets absorbed into the fiber board?
A neighbor also has vinyl over his old wood siding, however he just has a foam vapor barrier.
Yet another has said I don’t need anything and that the wood siding is already insulat, just put up the siding.
Correct answer?
Bruce
