I've done few bathroom jobs in the tiling world now, and have come across problems when taking old floor boards up in old houses esp in bathrooms. When I lay and screw down the ply ready for tiling it always tends to bow down in the middle or wherever the main traffic area is.

I always tend to "blob" the tiles up where it droops, but i know the the addy only has a certain tolerance when doing this.

Would i be better off putting wooden spacers under the ply and offering it up to level? Or should I be using self leveling.

Basically need advice which is the cheapest and easiest option and one that isnt going to come back and bite me on the .

Mapei fibre plan is suitable for levelling timber floors...

Thanks for the advice, but it says this product is for cermaic and naturalstone tiling only, can I use porcelain tiles on it?

Originally Posted by Versatile69

Thanks for the advice, but it says this product is for cermaic and naturalstone tiling only, can I use porcelain tiles on it?

Porcelain is a ceramic tile only fired at a higher temperature and pressure, so in answer to your question, yes you can. it is the adhesive that is important with porcelain tiles, you need to use a flexy adhesive and flexy grout. if your ply is "bowing" though, that might inidcate a deflection problem and you need to sort this out first!

Hi ya Versatile,

I'd go for SLC, Mapei Fibreplan as Dave says is very good on timber floors

Can I ask what you mean by 'blobing' the tiles, do you mean dot and dab?

go for slc mate, the problem with shimmying timbers is that the shimmies can work loose sometimes