Anhydride screed problems

[Stannards]

Hi everyone I’m after a bit of advice. I’ve just removed the floor tiles in our on suite. After we noticed that a couple had started lifting. This is the second time this has happened since we built our house about 12 years ago. The first time the happened about 6 years back the tiler recommended we use a decoupling mat which we did. This time after lifting the tiles the Anhydride screed has completely failed. And i noticed that after lifting the mat it seems to have retained some moisture. Could this be because the screed had not dried adequately when the tiles were first laid and the screed hasn’t cured properly ? Many thanks

 

[Ajax123]

My guess is water has been getting in from the shower. It looks very thin. Is it soft?

 

[Stannards]

My guess is water has been getting in from the shower. It looks very thin. Is it soft?

Hi yes it very soft in places the screed is 60 mm

 

[Ajax123]

Hi yes it very soft in places the screed is 60 mm

Possibly it can be dried and then hardened using a low viscosity penetrative epoxy resin like PHS from flowcrete. Otherwise it might be easier to remove and replace. 60mm is OK. Looks thinner in the pic but that might just be perspective.

 

[Stannards]

Possibly it can be dried and then hardened using a low viscosity penetrative epoxy resin like PHS from flowcrete. Otherwise it might be easier to remove and replace. 60mm is OK. Looks thinner in the pic but that might just be perspective.

Possibly it can be dried and then hardened using a low viscosity penetrative epoxy resin like PHS from flowcrete. Otherwise it might be easier to remove and replace. 60mm is OK. Looks thinner in the pic but that might just be perspective.

Hi thanks for the advice looks like the waste trap has been leaking. At least it’s not the underfloor heating. Just got to repair it now.