I'm in the midst of renos of my basement, and am adding a 5' x 7' laundry room to the space. My current floor is the concrete slab, but I am planning on putting down in 1" rigid insulation, covered by 3/4" plywood. I haven't done the walls yet, but am planning on using regular 1/2" drywall.
I'm a bit stuck at this point as to figure out how to plan for the floor properly. I have roughed in a 3" floor drain in the space just in case there is any leaking, overspray, etc, but am not quite sure how to prep the floor appropriately. I'm a little confused / perplexed how to best slope the floor towards the floor drain, and whether or not I need to use something like Ditra or some other membrane to waterproof the floor.
How much slope does the floor need to direct water to the drain? How does one acheive this slope? Do I need a waterproof membrane like you would in a shower? Afterall, it isn't really a "wet" space, like a shower which is designed to be soaking wet all the time, but rather just a drain to catch any spillage or accidental flooding that may occur.
Thanks for any advice / pointers / suggestions / etc...