Yet Another Suspected Wet Room Floor! Looking For Advice Please!

[Paula]

it's water stuck under the tiles!
these type of trays trap it against the drain assembly. if this type of drain is used, best to use epoxy grout and Silicon around the drain.
i guarantee if this tray is used more than once a day, it will get worse....

Just out of interest, which trays have the "weep holes" around the drain that you referred to earlier? I must admit I've never heard of this before. Our tray was an Impey tray and certainly didn't boast of having any such holes, and we had exactly the same problem as Joanne. If I ever had another wetroom installed I would be interested to know which trays had such a feature?

 

[One Day]

Just out of interest, which trays have the "weep holes" around the drain that you referred to earlier? I must admit I've never heard of this before. Our tray was an Impey tray and certainly didn't boast of having any such holes, and we had exactly the same problem as Joanne. If I ever had another wetroom installed I would be interested to know which trays had such a feature?

the only ones i've seen which drain sub-surface water are schluter's ditra-drain.
it's a problem with design which is only just starting to become apparent in the UK.
Most manufacturers have a head in the sand attitude unfortunately.
The US and Aus have sussed it long ago though.

 

[One Day]

Read this: http://www.schluter.com/media/Gobis_Waterproofing_Tragedies.pdf?v=201510140601
Explains it easier than I can.

 

[thompsonbrown]

Your right Impey trays don't have weep holes but do have a large amount of adjustment to carer for all tile sizes. I fit a lot of wetrooms and always insist is is fitted with underfloor heating as most grouts aren't waterproof.

 

[One Day]

it's not just impey. loads of trays have little upstands. ufh is a good idea, as is epoxy grout too.
when i went on Schluter's training course it was a real education learning that water management rather than prevention is key to making a wet area last.

 

[bcd-87]

it's water stuck under the tiles!
these type of trays trap it against the drain assembly. if this type of drain is used, best to use epoxy grout and Silicon around the drain.
i guarantee if this tray is used more than once a day, it will get worse....

@Bri its water under the tray ok !!

 

[bcd-87]

😀😀😀

 

[Paula]

it's not just impey. loads of trays have little upstands. ufh is a good idea, as is epoxy grout too.
when i went on Schluter's training course it was a real education learning that water management rather than prevention is key to making a wet area last.

So....given that we are stuck with our Impey tray (with no weepholes), but have re-grouted with epoxy, and have a polypipe (wet) underfloor heating system in the bathroom everywhere other than in the actual shower tray area, do you think our floor will last a good few years without failing?

 

[One Day]

@Bri its water under the tray ok !!

Yes - It is showing efflorescence, as a result of wet grout staying wet from trapped water.
I'm just explaining the most probable cause, rather than just stating the effect.

 

[One Day]

So....given that we are stuck with our Impey tray (with no weepholes), but have re-grouted with epoxy, and have a polypipe (wet) underfloor heating system in the bathroom everywhere other than in the actual shower tray area, do you think our floor will last a good few years without failing?

I think if the adhesive bed hasn't been ruined by saturation for too long (you'd know as the tiles would be working loose), then the epoxy will keep water out and you'll be fine.
Just watch out around the grate. I would have siliconed around the grate. If it's been grouted, watch out for it pulling away and letting water in again. Just in case...