It’s down to the finishing touches on the back porch enclosure. And to make it not just user friendly but also safe, I had to get a lid for the sump pit – a gas-tight lid to prevent moisture and potential radon from diffusing.
There were a number of lid options out there, and I probably have been looking at most of them. But I am a cheapskate and those lids were expensive. That may be because some of them have a vehicular traffic rating, which we really didn’t need. Foot traffic is all this lid will see.
Because I didn’t want to reach deep into my pocket, I decided that a three quarter inch plywood cover should do. But how would I fit it onto the pit without creating a trip hazard?
Well, we cut out a one inch wide ledge from the upper most concrete adjustment ring. And we made it just deep enough so it would accommodate the three quarter inch plywood cover.
To prevent mold from growing on the bottom of the the cover I attached two layers of a 6 mil poly sheet. Those sheets will also serve as a vapor barrier. And to make the system gas-tight, I grabbed a neoprene gasket and installed it on the ledge. The plywood cover, which was now flush with the floor, is held down by six screws.
Cutting out the ledge was tricky, yet fairly easy thanks to the great help of our friend Rubani!