Backup waterproofing for waterproof concrete walls
I’m considering using a crystalline waterproofing admixture* in my foundation walls. Would you install backup waterproofing for this? Small cracking is self healing, but it seems like larger cracks in the concrete could lead to waterproofing failure. I’m planning a finished basement, with interior rigid foam, so the concrete won’t be readily accessible for repair. (Rochester, NY area)
*For those not familiar, these are concrete admixtures that react with water and calcium to form crystals in the capillaries in the concrete. The crystals block the flow of water through the concrete. When small cracks form, water entering the cracks causes new crystal growth, sealing the cracks and healing the waterproofing. KIM and Xypex are well know brands.
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