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Insulating a cantilevered floor exposed to the outside

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  • Sep 2nd, 2021 6:05 pm
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[OP]
Member
Dec 27, 2017
273 posts
266 upvotes

Insulating a cantilevered floor exposed to the outside

So the second floor of our home cantilevers out at the front about 2-3 feet, and is not insulated from the elements. Last winter we found the front of the house would get extremely cold.

We are looking at ways to insulate the area (we have access from the exterior by removing the soffits), would a simple closed cell spray foam kit coating the space be sufficient? I've seen some people talk about stuffing loose cellulose up there or gluing ridged foam board to the surfaces and sealing the joints?
3 replies
Deal Guru
Jan 25, 2007
11735 posts
6924 upvotes
Paris
Spray foam is the best, flowed by sheets of foam board/small spray can to fill voids second. Batts of insulation shouldnt be used.
Deal Expert
Feb 7, 2017
22235 posts
20835 upvotes
Eastern Ontario
OP … pic would help to see what you are actually dealing with

For me a “cantilevered floor exposed to the outside” sounds like a balcony or a deck
[OP]
Member
Dec 27, 2017
273 posts
266 upvotes
PointsHubby wrote: OP … pic would help to see what you are actually dealing with

For me a “cantilevered floor exposed to the outside” sounds like a balcony or a deck
Standing on my front porch looking up at the second floor.

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