Laying stone tiles on upstairs timber floor...........

[JDLDIY]

If I understand this rightly, the standard way would be to lay 18mm ply first and then the new tiles with flexible grout. This means there will be quite a big step up into the bathroom, about an inch.

As an alternative could I remove the t&g flooring and replace it with a flatter surface? The ceiling is down underneath so I could also add some extra strengthening joists with no problem.

Many thanks for your suggestions.

JD

 

[masona]

As an alternative could I remove the t&g flooring and replace it with a flatter surface? The ceiling is down underneath so I could also add some extra strengthening joists with no problem.

That's the best way to go and make sure the plywood is exterior ply (WPB). Use screws approximately every 200mm

 

[JDLDIY]

Right, so my plan will be to remove all the t&g, lay the 18mm wpb ply down and then screw down to the joists. Then I can add noggins to strengthen between the joists.

Many thanks again Masona

JD

 

[masona]

Yes remember where the pipe and cable are before screwing!

 

[JDLDIY]

Yes remember where the pipe and cable are before screwing!

Yeah, seeing as I put them all there I'll have no excuses for going through any of them! It'll be so much easier as the ceiling is down underneath - I'll be able to see exactly what I'm doing.

Just to double check - the 18mm ply will be sufficiently solid and flex free on it's own when used as flooring will it?

 

[Jasonb]

Stone is a bit more likely to fracture than ceramic/porcelain I would go upto 25mm ply for peace of mind unless your joists are closer than 350cts.

Jason

 

[masona]

Should be okay providing JDLDIY add some extra strengthening joists.