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insulating an addition built on a deck

sway22's Avatar
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08-12-04, 06:07 AM   #1  
insulating an addition built on a deck

We just bought our first home and the addition is built on top of the original deck. I would like to insulate the floor but noticed that 3 of the 4 sides are open (outside the crawlspace). What can I do for insulation and protection against the weather?

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ahimmel's Avatar
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08-12-04, 06:40 AM   #2  


Need more info.

What part of the country are you in.

Are you sure there is a strong enough footing.

Can you seal the openings air tight.

Do you have GOOD drainage or can you install a sump pump.

This is not a simple matter of just pushing some insulation in there.

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Join Date: Aug 2002
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08-13-04, 01:55 PM   #3  
You dont say what the joist are there . But lets go this way. I would put up a R19 up in the joist with the paper side too the floor room. Now you can close that in with a siding on the under side of the joist are you could put up a 1/2"X1/2" wire mesh to help hold the insulation up . I would let the 3 sides wide open. opr just put a lattice around the 3 walls.That way you dont have to mess with a crawl space when you think about it this is just like and outside wall only laying down. Have done many add on's this way.


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