I need to make an egress window and the depth below grade is 24".
However, most egress window wells at home improvement stores are 20" in height and I need to buy 2 of them which made the cost double.
I am thinking about using cement blocks to make the well like so
It may cost me only $200 vs $800.
My questions: 1. Is this allow by code (in general)? I am in Washington State
- How to prevent water leakage inside the well? Basically do I need to seal it (like bathroom)?
Thanks.

