please help

[saintdom]

hey,

having the week from hell so far , was under the impresion the job was 18 mm ply onto screeded floor.
Turned up and its actually onto joists screwed at 150 centres ish.

whats the best advice on addy now. i put a pint of water full to the brm and no movement but really not sure.

thanks for all your help
, hope next week i wont have any qs

[brian c]

im sure a flexi adhesive and flexi grout will be fine bud.You could also use a 2 part fexi and flexi grout.Just double check that the substrate is solid and screw down more if need be.If its a large floor area then you will need to consider expansion joints.

[whitebeam]

Spf and flexible grout, Go to a good supplier for your materials, Not the sheds if you can help it

[saintdom]

cheers mate, only 7 sq m. ive got. its pretty solid i just panic a bit being newbie and all.

[Droopy]

If it is 18mm ply straight onto joists, and not an overlay, then a standard SPF is not sufficient.
You will need to use a two part elastomeric adhesive, such as BAL Fastflex.