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Build & Remodel

Basement remodel

Our basement ( family room) is constructed with the windows above grade and the poured foundation mainly below grade. When it was finished the drywall goes to the top or the concrete then in with a shelf and continues up the above grade portion. The shelf around the perimeter is about 9 inches deep. The walls are all framed, insulated and vapour barrier. I would like to frame in and continue the line of drywall straight up and eliminate the shelf. Will addind insulation and putting new vapour barrier on the warm side be enough or do I need to remove the old drywall above grade and remove the old vapour barrier. Also what sort of insulation is best for this application with either scenario. Window wells will be extended btw

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Posted 2015-04-10T18:51:32+0000  by Lgreeley Lgreeley

Hello Lgreeleyand welcome to the Community.


If you want to install additional insulation in the top portion of the wall it would be best to remove the original drywall and vapor barrier first, stud out the new interior wall. Then fill the gap with a R30 Kraft faced insulation, which is 9 ½” thick. 


The reason for this is you do not want to create a pocket between the 2 vapor barriers that will trap moisture and that inner layer of drywall could turn very nasty.

Thanks for your inquiry and sending the great pictures.



Posted 2015-04-14T19:09:10+0000  by Char_HD_CHI
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