I have few questions about basement insulation installation details:
1. How high the wall foam board should be? close to the ceiling joists or just as high as the concrete wall?
2. put the rigid foam board as tight as possible in all areas? do I need to leave gap for its expansion?
3. how about the plywood subfloor? does it need gap for expansion?
4. do I have to use tapcon to fix the frame bottom plate to the concrete floor? it will break the foam and ploy then. It is not enough to nail the top plate with the joists for the frame to stay?
5. The frame should be sit on top of the foam but not the plywood. Is it right?
thanks,
1. How high the wall foam board should be? close to the ceiling joists or just as high as the concrete wall?
2. put the rigid foam board as tight as possible in all areas? do I need to leave gap for its expansion?
3. how about the plywood subfloor? does it need gap for expansion?
4. do I have to use tapcon to fix the frame bottom plate to the concrete floor? it will break the foam and ploy then. It is not enough to nail the top plate with the joists for the frame to stay?
5. The frame should be sit on top of the foam but not the plywood. Is it right?
thanks,