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Despite resealing upstairs ceramic tray twice water continues to run down downstairs wall when shower is used

7 Answers from MyBuilder Plumbers

Hi Terry

I have just rescued someone on here from this issue and the job went as so

Pulled out shower tray and blown tiles to discover leaking pipes had damaged floor area.

re lined floor and stud wall with marine ply
Sorted pipe work
retiled areas affected
resealed with mastic.

You may have a leak on waste somewhere or the water is breaching the tiles and grout.

Test waste pipe by pouring water carfully down shower waste this tests pipe work and waste seal.

then spray walls with shower hose to see if leak persists.


Concept building services


Answered 26th May 2011

have you investigated waste seal or pipework to shower, or quite possible a fracture in grout is allowing water penetration

hope this helps


Answered 26th May 2011

this sounds like your trap may have a leak under the tray or the pipework feeding the shower.


Answered 26th May 2011

sounds like seal problem between shower tray or possibly movement of tray due to not being supported properly regards colin


Answered 26th May 2011

More than likely the grout needs renewing....


Answered 26th May 2011


There may be a problem with your waste pipe or water could be getting past the tiles.

Hope this was helpfull to you.

Kind Regards

James Coburn

JWC Property Services


Answered 26th May 2011

Are you able to check your shower waste before removing all the tray and tiling. Depending on the type, lift off the chrome cap, un lock the hair trap inside and lift out. replace the chrome cap and use the notches in the end of the hair trap insert to tighten the chrome cap. This may only be possible if you have a shower bottle trap. If you have a u bend or other style trap you can't do this. It,s worth a try, sometimes the traps can loosen if fitted incorrectly or the seal is loose.


Answered 27th May 2011

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