Stamped concrete patio near foundation
I have a couple of questions regarding a patio near the foundation of our house. My wife and I have been dealing with water issues in our basement/crawl space for a while now, and we just recently had a contractor in to seal the vent properly, install a membrane along the foundation wall, and add French drains tied into the downspout.
As the last part of this work, we have removed a surface deck that the old owners installed and are looking to install a stamped concrete patio with the same dimensions (14×30) pitched away from the home. Specifically my questions are:
– We want the patio as close as is reasonable to the crawl space and basement walls in order to keep the water out of there. I live in Ohio, so I’m assuming I need to account for freeze/thaw and heave, from my research. How close should my contractor for the patio place it to the house, and any recommendations on sealing that gap that will be left?
– The yard is a lot of clay and holds moisture, so we are considering installing drains around the perimeter of the patio to not only account for that but catch run-off from the pitch. Is gravel base sufficient in an environment like this or do we need to consider something additional?
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