EPS rainscreen for walkout basement
I am planning on waterproofing the below-grade portion of my walkout basement. I plan to use a water based adhesive to apply a HDPE based waterproofing against the masonry blocks. Next, I will add 2” of rigid EPS. Lastly, I’ll finish off the below grade portions with a dimple board. For the above grade portions, I will create a rainscreen using furring strips and finish with cedar siding.
Is it OK to drill through the waterproofing membrane in order to attach furring strips to masonry walls on top of the EPS ? Will this potentially ruin the life of the HDPE membrane?
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