advice on floor, please - Page 2 - TilersForums.co.uk | Tile Forums

burncross · 03-07-2008

Quote:

Originally Posted by grumpygrouter

The thicknes of the ply isn't the real issue, the issue is, is the floor solid. Ply is only used to strengthen floors. If the joiner has layed the 6mm ply on to a solid floor i.e. deflection is withn BS tolerances then the 6mm ply lining is just to give a nice surface.

If on the other hand he has laid it to strengthen the floor then it is inadequate and should be corrected accordingly.

how can you check that deflection is within BS tolerance?

**grumpygrouter** · 03-07-2008

Quote:

Originally Posted by burncross

how can you check that deflection is within BS tolerance?

an excellent question indeed...........I wish I knew the answer. My normal way of checking is the glass of water test but this isn't foolproof!

**Dave** · 03-07-2008

Quote:

Originally Posted by burncross

how can you check that deflection is within BS tolerance?

Attach a string line and run it across the floor and attach at the other side something like 30mm above the floor......then when applying weight to the floor, either a second person or boxes of tiles ...check the measurement between the line and floor before and then after the weight has been added....if it exceeds more than 2mm or so then strengthen the floor.....just a guide to work from.....

burncross · 03-07-2008

cheers will try that one

**grumpygrouter** · 03-07-2008

Quote:

Originally Posted by Dave

Attach a string line and run it across the floor and attach at the other side something like 30mm above the floor......then when applying weight to the floor, either a second person or boxes of tiles ...check the measurement between the line and floor before and then after the weight has been added....if it exceeds more than 2mm or so then strengthen the floor.....just a guide to work from.....

Good tip dave.