I’m renovating my basement (1956 bungalow) and putting in an income suite. I’ve gutted the entire basement and am finalizing planning/material selection. I had plans drawn up by an Architect and am planning to do most of the work myself with the exception of some electrical and plumbing. I have found GBA to be extremely helpful with my planning, but still have some questions. I live in Edmonton, Canada which is Climate zone 7.
Insulation is where I’m at!
Unfortunately, due to the age of the home, insulation in my house in general is poor. There is no insulation or house wrap on the exterior of the foundation. I am fortunate not to have any water issues though! I’m planning on using 2″ of EPS on the exterior walls and then framing with 2×4 and using Roxul in the wall cavities. I’ll then spray foam the rim joist although I’ve discovered that my floor joists are almost fully embedded into the foundation. I’m not planning on using a vapour barrier, although I’ll likeyput one up for the inspector. For flooring, I don’t have a vapour barrier underneath my foundation floor, it’s just concrete. I’ll be laying 2″ EPS on the floor as well and covering with a layer of 5/8 TG plywood which I’ll frame my walls right on top of. It will then be finished with laminate flooring.
-What is the best method for insulating the embedded floor joists?
-I’ve seen folks reference 2 layers of the 5/8″ plywood. Is this necessary given my application?
-Do i fasten the plywood down or keep it floating?
-Sorry in advance but…. Do I need a vapour barrier given my cold climate?
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