My plan is to build a mold (by building a shallow wooden box, made to support putting a sheet of aluminum inside to create the curve) and fill it (upside down of course) with concrete to create what is shown in this image:
The idea is to install it (flat side down) in a doorway, adhering it to the existing concrete floor as well as filling in any gaps on the sides between the ramp and the doorway with concrete (the walls are stone covered in concrete).
The purpose being to stop any water from flooding from one part of our basement (laundry room) to the other (where we have our home theater)
Any advice would be very helpful as every part of this process is pretty new to me! Thanks in advance!
Best Answer
As I understand it, your laundry room connects to another room with basically a smooth level concrete floor.... and you want to create a "lip" in the doorway to prevent water escaping the laundry room.
To state the obvious: the real trick would be to prevent the flooding in the first place. Why does it flood? Is there a drain that could be improved?
Aside from that, let's turn the conversation around. What you're describing is kinda like a very low shower-stall enclosure. If you can shift your thinking to 'how would I make a 1-inch lip to enclose a shower', you might start thinking about other options:
Hopefully this is of some use to you. Good luck!