Question

I want to use Dow blue foamboard all around the inside of my enclosed sunroom. Any problem using it all the way around the room?

Asked by Steve Mahoney
Lecanto, FL

I have a screened concrete stucco lanai converted to an enclosed sunroom. Dow blue foamboard, furr strips on top, sheetrock all interior walls. One wall has slider windows; one will have a door. These will now be the exterior walls. I want to use Dow blue foamboard all around the inside of my enclosed sunroom, not just on the inside of the now exterior walls. This would provide an even surface (needed due to stucco and some extra insulation).

Answer

Bill Bradbury

Answered by Bill Bradbury

Smithfield, UT

Envirocon Home Restoration

April 7, 2011

Steve,

That is a good idea, but make sure to fully adhere the XPS to the stucco so there are no air gaps that could cause condensation on the stucco between the 2 layers where it can't dry.

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