K
Keez
First time poster on here. I hope you guys can help me out here.
Upstairs bathroom. 2.5M x 2.5M
Have just replaced my bathroom floor with 18mm exterior ply and screwed down every 6inches on EVERY joist. Put down 330mmx330mm ceramic tiles using flexible tile adhesive. 2mm gaps. Grouted using Mapei Ultra Colour Plus (mixed exactly as per instructions). Left the grout for 24hrs before walking on the floor.
After just 2 days of walking on the floor, a lot of the grout towards the centre of the bathroom (most floor movement) has cracked !
The description on the grout box does state the it is suitable for timber floors. I took this as meaning that it is flexible.
Any ideas what the problem coud be?
Thanks for looking in guys.
Upstairs bathroom. 2.5M x 2.5M
Have just replaced my bathroom floor with 18mm exterior ply and screwed down every 6inches on EVERY joist. Put down 330mmx330mm ceramic tiles using flexible tile adhesive. 2mm gaps. Grouted using Mapei Ultra Colour Plus (mixed exactly as per instructions). Left the grout for 24hrs before walking on the floor.
After just 2 days of walking on the floor, a lot of the grout towards the centre of the bathroom (most floor movement) has cracked !
The description on the grout box does state the it is suitable for timber floors. I took this as meaning that it is flexible.
Any ideas what the problem coud be?
Thanks for looking in guys.