Fistor
Geotechnical Engineer
Hi all -
I am replacing the closet flange as part of my bathroom reno, and thought I had everything figured out, but now I am scratching my head about sequencing of installation. Here is my dilemma:
- I removed the old flange (was beyond reuse) and the uppermost portion of the old cast iron riser
- I plan to add an ABS flange on an ABS pipe section that I join to the remaining portion of the cast iron riser. Have not done any of this yet.
- I will be putting down cement board for flooring, and have cut a nice hole in the middle of it through which the new ABS pipe/flange will pass
- I thought that I'd connect the new section of ABS pipe first, then place the cbu, then add the flange after the flooring is down. However...
My concern: It seems like it will be hard to properly glue the flange on to the pipe, given that the joint will be slightly below the base of the cbu and I'll be working through a hole that does not have excess clearance around the edges.
If the cbu is installed, there will not be a lot of clearance for screwing around with the cement, or making sure that the joint is good/proper. Once the cement begins to fuse, I'm done. With the cement board mortared and screwed down, there are now easy "re-do's", as I see it.
Any thoughts? Should I instead install the pipe and flange, then add the flooring in sections around the sides of the riser/flange? Also, I guess that regardless, prior to gluing the flange on, I'll need to pass the closet bolts through, because once the flange is down, there will be no way to pass these bolts under and up...
confused....
I am replacing the closet flange as part of my bathroom reno, and thought I had everything figured out, but now I am scratching my head about sequencing of installation. Here is my dilemma:
- I removed the old flange (was beyond reuse) and the uppermost portion of the old cast iron riser
- I plan to add an ABS flange on an ABS pipe section that I join to the remaining portion of the cast iron riser. Have not done any of this yet.
- I will be putting down cement board for flooring, and have cut a nice hole in the middle of it through which the new ABS pipe/flange will pass
- I thought that I'd connect the new section of ABS pipe first, then place the cbu, then add the flange after the flooring is down. However...
My concern: It seems like it will be hard to properly glue the flange on to the pipe, given that the joint will be slightly below the base of the cbu and I'll be working through a hole that does not have excess clearance around the edges.
If the cbu is installed, there will not be a lot of clearance for screwing around with the cement, or making sure that the joint is good/proper. Once the cement begins to fuse, I'm done. With the cement board mortared and screwed down, there are now easy "re-do's", as I see it.
Any thoughts? Should I instead install the pipe and flange, then add the flooring in sections around the sides of the riser/flange? Also, I guess that regardless, prior to gluing the flange on, I'll need to pass the closet bolts through, because once the flange is down, there will be no way to pass these bolts under and up...
confused....