What is the best way to insulate a 1930s brick house from the outside?

Stephane Marcotte
Updated: Sept. 9, 2021


I have a semi detached house in Toronto Canada.

The house built in the 1930's is double brick wall. The house is original and has little to no insulation right now. I want to insulate the house from the outside with as high R value as possible.

After insulation I was thinking James Hardie siding.

Apparently brick is a problem because you need something to fasten the insualtion and siding to and apparently James Hardie siding is heavy I have been told.

Rigid foam or Spray foam?

I need advice on best practice.

Thank you


Toronto Ontario 


Responses (2)

Stephane Marcotte 2 years ago