PatrickM
New Member
I'm replacing a closet flange that leaked horribly. The original flange was poorly installed:
1) it was attached to the subfloor rather than the finished floor (about 1" below the finished floor height)
2) the hole in the subfloor wasn't quite big enough so it was sitting on the flare in the 4x3 flange rather and the screws had then bent the abs flange when they were tightened; and
3) the tile was installed partially over the flange (i.e., not cut back enough and mortar squeeze out).
I want to correct all of this when I install the new flange.
So far, I've trimmed back the tile and enlarged the hole in the subfloor slightly. Now the flange will sit flat against the subfloor but it's still recessed by about 1/2".
I'd like to fix that by cutting a plywood spacer ring that would sit between the tile and the subfloor opening and create a mounting surface for the flange that would at the same height as the finished floor (see example here). I would glue the ring to the subfloor with waterproof construction adhesive. Is this a good idea? ...any potential problems I'm failing to consider?
Next question...should I apply sealant (e.g., silicone caulking) between the outer edge of the ring and the tile to avoid water seeping under the tile? If the wax seal fails again in the future, I want to see water running out from under the toilet as soon as possible. The gap between the spacer rings and the tile could delay water from making it's way out onto the finished tile floor.
I've provided some picture below for reference.
Thanks in advance for any advice!
Current situation:
New flange set in place (not yet glued):
Plywood spacer ring diagram and location for silicone sealant:
1) it was attached to the subfloor rather than the finished floor (about 1" below the finished floor height)
2) the hole in the subfloor wasn't quite big enough so it was sitting on the flare in the 4x3 flange rather and the screws had then bent the abs flange when they were tightened; and
3) the tile was installed partially over the flange (i.e., not cut back enough and mortar squeeze out).
I want to correct all of this when I install the new flange.
So far, I've trimmed back the tile and enlarged the hole in the subfloor slightly. Now the flange will sit flat against the subfloor but it's still recessed by about 1/2".
I'd like to fix that by cutting a plywood spacer ring that would sit between the tile and the subfloor opening and create a mounting surface for the flange that would at the same height as the finished floor (see example here). I would glue the ring to the subfloor with waterproof construction adhesive. Is this a good idea? ...any potential problems I'm failing to consider?
Next question...should I apply sealant (e.g., silicone caulking) between the outer edge of the ring and the tile to avoid water seeping under the tile? If the wax seal fails again in the future, I want to see water running out from under the toilet as soon as possible. The gap between the spacer rings and the tile could delay water from making it's way out onto the finished tile floor.
I've provided some picture below for reference.
Thanks in advance for any advice!
Current situation:
New flange set in place (not yet glued):
Plywood spacer ring diagram and location for silicone sealant: