Damp/dark looking discoloration on bathroom floor tiles

I have noticed patchy dark/damp looking discoloration on bathroom floor tiles directly outside shower cubicle. The tiles aren’t new but recently had a new shower cubicle installed. The marks aren’t on the top of the shower, look like coming from the underneath of that makes sense.

I suspect this is due to water leaking. I can’t think what else could make those marks. Could this be the case?

Replies from 5 tradespeople

Sounds like damp getting into the tiles from the base of shower. Is the grout to the floor tiling cracked or discoloured? Sure sign of moisture movement. I would investigate further, check the plumbing and condition of the shower cubicle floor fixings, even the effectiveness of the shower door/curtain, etc. Needs remedy ASAP.

Possibly I suspect water is leaking through itsome a simple task if it is just seal problem I will make it water tight and give a little freshen up

yes more likely you have a leak especially if the tiles wasn't darken before you had the new shower installed

Normally in this case its rather a sealant issue or you may have a hairline crack in the shower basin itself. Or maybe there's a leak in the waste water pipe.

1st thing, remove the shower panel attached to the shower tray, and have a look underneath to check if it's all dry under there.

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