Porcelain Grout problems!!

[Bobalob23]

You are supposed to heat the floor slowly for its first initial time. This commissions the adhesive / grout etc without thermal shocking it.

Ok thanks I shall mention it, think it’s more likely to be from this and not though tiling onto ditra Matting on timber?

 

[Dave]

Ok thanks I shall mention it, think it’s more likely to be from this and not though tiling onto ditra Matting on timber?

That depends on deflection, was there excessive movement?

 

[Bobalob23]

That depends on deflection, was there excessive movement?

I wouldn’t say movement maybe vibration?