Tiling in hallway

PeterVincent · Post by **PeterVincent** » Mon Jul 28, 2008 10:05 am

Hi,
I wish to tile in a hallway over existing floor boards. I do not want to raise the height by too much and I am wondering if I overlay 4mm marine ply screwed into the joists and boards, and a flexible adhesive can give a satisfactory result.

The alternative is to remove the existing boards and fit 18mm marine ply, this is something I am not in a rush to do if the 4mm on top of boards will be just as good.

Thank you,

Peter

bathstyle · Post by **bathstyle** » Mon Jul 28, 2008 3:26 pm

If you're using a ceramic or Porcelain tile then 12mm ply minimum over floorboards.

If removing boards completely then it's got to be 25mm ply I'm affraid.

PeterVincent · Post by **PeterVincent** » Tue Jul 29, 2008 2:01 pm

Hi Bathstyle,

Pardon my ignorance, what is the purpose of the plywood?

Is it to stiffen up the floor? Is there a more forgiving adhesive for floors without the required stiffness?

The floor is ~ 2m X 2m and it certainly seems solid to me in comparison to tiled kitchen floors I have looked at.

Many thanks,

Peter

bathstyle · Post by **bathstyle** » Tue Jul 29, 2008 3:26 pm

It basically holds the floor together, strengthens it and lets it move as one complete piece, any localised movement in the floor (if tiling straight on floorboards) and the tiles/grout may crack.

A lot of Adhesive manufacturers recomend using an elastomeric adhesive straight onto floorboards but personally I don't like it and it costs an absolute fortune to buy