Installing Toilet Flange (3″) in Basement
I’m installing a new toilet in the basement. I have a 3″ plastic pipe (black – ABS?) sticking up through the concrete floor.Flooring unfortunately has already been installed (5/8″ thick engineered hardwood + 3/8″ thick Delta membrane subfloor).
Do the 3″ toilet flanges to fit INSIDE the 3″ waste pipe exist? I can get the outside flange, but would like to avoid ripping flooring and chiseling the concrete floor around the pipe.
Alternatively do they have outside flanges for 3″ ABS pipe with a relatively short collar (1″ max) so I would not have to cut the concrete around the pipe?
If the 3″ inside flanges do exist, is it OK to steal some 1/2″ of the ID. This would leave only 2/5″ for flow, although I noticed the toilet itself has only 2″-2.25″ inch opening at the bottom.
Thanks in advance for your suggestions.
welcome to the wonderful world of remodeling. this should have been thought about and the flange installed before the floor. to do it properly and legally you are going to have to chip out enough concrete for the flange to slide down. it should not be that big of a deal as you only need about 1″ of room, 1 1/2″ at the most since you have 1″ of flooring above the concrete
i would rather see you cut the flange down a bit before installing a 3″ inside flange
