Insulating During Re-Siding Project
This is a great site!
I have a house in Ontario that’s looking to be re-sided. The climate zone is Zone 5 USDA. The windows will be replaced at the same time. Currently, the exterior siding is pine board and the house is about 16 years old. I’m considering two options from two separate contractors.
1. Remove existing pine siding down to OSB.
2. Install 0.5″ poly iso insulation.
3. Install hardie board.
1. Install 0.5″ poly iso insulation.
2. Install Sagiper PVC.
A. Because the house has a limited roof overhang, there isn’t space for anything more than 0.5″ of insulation. So in this case would I be better off skipping the insulation altogether?
B. Would you recommend removing the existing siding?
One contractor says that it looks to be in good condition and can be a substrate for the new siding. There is no evidence of damage on the outside or inside of the house. He’ll know more when he installs the new windows.
There is a small drip on the two end windows in horizontal wind-driven rain between the vinyl frame and the jamb extension. No detectible rot on the jambs. Dry wall is nice and clean without staining.
The trim on the windows was removed and looked dry, with the original tuck tape. I also pulled the carpet back from the wall and the OSB subfloor is dry.
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