We have an old sauna on our property that was left for dead. When the previous owners stopped using it, they dug into it to create a well. The water was/is very good but the sauna floods from this exposed well each spring. Currently, we're in the process of rebuilding the sauna and are afraid of it flooding if we don’t patch it correctly. I could cover the well with cement but it's really nice to have access to a well and I don't want to completely cover the hole.
The base of the sauna is about 10" thick of concrete. I'm wondering if there's a way to bolt in a metal plate + gasket overtop of it in hopes to add a hand pump or something like that in the future. My worry is it not being sealed properly and all of our work going to waste with a flooded sauna in the spring. I'm not sure if this is the best approach as the heat from the sauna might quickly dry out the gasket and leave it prone to cracks etc.
What would you do?
by NeueJack