Basement Ceiling Leak – Part 20 – Shower Drain Plumbing

In Part 19 the new shower floor was grouted and the wall tiles installed as part of repairing the leaking shower floor that was installed less than a year ago during our major home renovation activities.

The next task was to connect the new floor drain to the existing plumbing.

If you recall the location of the floor drain in the original shower floor was within a foot and a half of the built-in bench.

en suite shower stall repair 007 Basement Ceiling Leak   Part 20   Shower Drain Plumbing

It was felt that the preferred location was more to the center of the floor for a more gradual and consistent downward slope of the entire floor

new shower drain location Basement Ceiling Leak   Part 20   Shower Drain Plumbing

So, with the new drain in place, it needed to be connected to the existing plumbing.

shower drain exposed Basement Ceiling Leak   Part 20   Shower Drain Plumbing

With the floor drain moved about 2 feet, some ingenuity was needed for the connection of the new floor drain to the existing plumbing underneath. So, the approach taken after the elbow was connected to the drain was to have a pipe come back to the existing drain pipe. If you look very closely at the picture above you will see in the lower center area what looks like a grey circle.

This was the location of the initial drain, now fully covered with concrete. To the immediate right of that grey circle there was already an opening cut in the wooden support beam. This opening was used to connect the new drain’s plumbing with the existing drain piping.

shower drain plumbing connection Basement Ceiling Leak   Part 20   Shower Drain Plumbing

Above is a slightly different view of the drain connections where you can see the  continuation of the drain piping to the right.

The next day Bennett returned to put the grout on the wall tile and fix some of the visible finishings for the shower. We’ll talk about that next time.

To continue to the next article in this series, simply select this link to Part 21.

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  1. Simon says:

    I have a similar problem in a shower I recently built in the apartment right over my bedroom wardrobe. The leak is really slow and doesn’t seems do come from a bad pipe fitting. In fact it looks like condensation is occurring on the wood panel, which I can see from underneath. I used a similar PVC drain from your first configuration. The rubber membrane as been applied over the concrete and get squeezed between the two drain parts. The rubber membrane goes 4 inches high all over the walls. I’m having a hard time to believe that leaks could come from the floor or the edges of the shower. I already did the same setup for the other apartment, right next to the other without any leaking (one year so far). But this last one is giving me some headaches. I’m following the rest of your saga before getting into a surgical deconstruction phase.

  2. Dan says:

    Hi Simon.

    Thank you for your comment. As you have seen we did all the quick fix stuff to no avail.

    So far, after a month now of the re-installed shower floor there have been no leaks.


  3. Ray Foulkes says:

    We have an en-suite shower room upstairs in my dormer bungalow. The tiles in the shower move and crack with the movement of the wall board (we call it plasterboard, in the US it is called sheetrock – same stuff) this causes water leaks to appear in the rooms below. Because the upstairs is timber frame we cannot get the boards to remain rigid, we have tried waterproofing with silicone sealants but they don’t work. Someone mentioned using a waterproof board called ‘Wedi-board’ with joints sealed by a scrim bandage and waterproof slurry. Does anyone have any experience of this type of waterproofing as it is driving me mad and I don’t want to go to all the trouble and expense of re-boarding and tiling if it not the right solution – any ideas?

    PS the irony is that I am in the basement waterproofing business but the methods we use drain water away not hold it back so I am the waterproofer that cannot waterproof his own house!

  4. Dan says:

    Hi Ray,

    Thanks for visiting our site.

    I personally do not have any experience with that product.

    I agree that finding a solution without having to re-board and re-tile is preferable; however, as was our case it might be the only long term solution … unless you have sufficient room to leave the current flooring, apply new water proofing & tiling, & the ability to excent the drain for the additional flooring. Usually, this is not possible or desirable.

    Good Luck to you. Let us know how you make out!


  5. Leak Repair Help says:

    I recently had to have my shower repaired as the drainage pipe underneath was leaking and damaging my kitchen ceiling which is directly underneath my bathroom. The big worry was the leak could affect my kitchen light as the leak was nearby. I was able to call out a company here in the UK who re-fitted the pipe and since then no more leaking. I’m sure this blog will be helpful to others who have a similar problem.

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