Substrat Prep For Pos Marble

[Tile seller]

This is a 30m2 suspended timber floor in a kitchen,the units are already fitted.

The layers are Wayrock,9mm ply and Karndean on top.

This customer is looking to lay pos Marble (may porcelain look alike) on top. The floor has a lot of movement in it. I'm not sure if it's floating or not.

I'm thinking the whole floor has to come up, is there any other way?

I'm tempted to suggest over boarding but the cost of the tiles is going to be a lot so there needs to be little risk of future probs.

 

[peteablard]

No point in over boarding if the movement has been sorted first. The whole lot needs to come up and be strengthened

 

[J Sid]

can you take some areas up and inspect what's beneath?
it could be possible to strengthen with brick or wooden props then overboard

 

[SJPurdy]

I'd suggest Marble look alike Karndean.