Stone veneer to cmu [Archive] - Home Construction Forums

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asmith555
05-10-2006, 05:39 AM
I am planning toi attach stone veneer to a 8" block basement. Can I mortar the stone directly to the block? Will this create a moisture problem due to there not being a drainage plain between the stone and the block.

Shanley
05-16-2006, 12:57 AM
We do it all the time...just make sure you have full coverage of mortar behind the stone (no air pockets).

David
05-16-2006, 10:57 AM
Do you live in a mostly heating climate, or mostly cooling climate? In a mostly heating climate, one insulates on the inside of the basement walls. In a mostly cooling climate, one should consider creating a space between the two layers to allow the hot air to rise, as opposed to bake the basement.

My guess is you live in a heating climate and therefore don't need to worry about it.

A drainage plane is needed to protect stuff from water, such as wood studs. Allowing a little water to the block foundation is nothing new - obviously the block is exposed to water anyway. You don't want water to get trapped between the two and then freeze, thus no pockets.