Basement Insulation


Old 02-15-08, 12:15 PM
Thread Starter
Join Date: Dec 2002
Location: San Diego California
Posts: 23
Basement Insulation

I'm upgrading a bathroom in my built 1945 block/brick. Local code official tells me I must put R11 insulation in below grade. Was planning on putting 3/4 inch DOW styrofoam up directly to the wall with 1X2 furring for half-inch drywall resulting in a 2inch wall...but that won't meet the R11. I'm really limited on space (Have an inch at most to play with to meet code for distance in front of toilet) so looking for any suggestions that would get me to R11 and minimize the thickness of the finished wall. Thoughts???

Thanks, Pink
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Old 02-15-08, 12:43 PM
Join Date: Mar 2005
Location: USA
Posts: 6,126
Basement Insulation

Look for Isocyanurate foam board.

It is about 7.5 per inch. More money per sf, but is better insulator.

There are several manuafacturers.

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