Hello,
I've just torn up the floor in our bathroom to install a new drainage system and new floors. The drainage pipe is 100mm, which is also the thickness of the joists. I've known this because I can see everything from the basement (which is uninsulated), but now that I have the floor up, I thought of trying to insulate it better.
As it was from the bottom:
asphaltboard
wind paper
insulation
rough sheathing
masonite
wet room carpet
As we've planned to do it:
asphaltboard
wind paper
insulation
wet room chipboard
self-leveling compound (probably to create the slope)
wet room carpet
What I was thinking was to use subfloor panels by the drain instead, so I can fit the drainage "inside" since the panels are thinner. Do you have any other tips on how to do it?
One idea was to build down a bit in the basement to make room for more insulation, but there is a door just right below, so you'd bump your head on the "build-down."
Grateful for some ideas...