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Drainage mat behind stone veneer?

user-739852 | Posted in Green Building Techniques on


Is it preferred to have a drainage mat in the air space with a stone veneer (as I typically specify – EnkaDrain-standard) )


Is it OK/ better to delete the mat and the air space (to minimize the opportunity to form condensation) and fill behind the veneer solid with mortar?

I would provide weeps at the bottom of the wall for water to escape in any case.


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  1. GBA Editor
    Martin Holladay | | #1

    You want the drainage mat and the air space -- for sure. Adhered stone veneer installations are VERY problematic, especially over OSB.

    More information:
    Stone and Synthetic Stone

    Weep Screeds Behind Manufactured Stone Veneer

    To Install Stucco Right, Include an Air Gap

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