Fitting shower tray on floor boards

[Mgrant]

Hey if fitting a shower tray on sand and cement is it ok to fit it straight on to the floor boards? As long as there isn't much movement in the floorboards.

 

[Callum Curwood]

Your going to want to over board first

 

[Callum Curwood]

6mm ply ideally

 

[Callum Curwood]

Don't forget you plasticiser to add to your mortar mix

 

[townfanjon]

yep you are ok James, but it sounds like its going to be worth a few extra screws.
PVA boards first, and do a 5/1 ish mix.

 

[Mgrant]

yep you are ok James, but it sounds like its going to be worth a few extra screws.
PVA boards first, and do a 5/1 ish mix.

Thanks, s a few extra screws to take any movement out of the floor. Replacing the boards with plywood is not required the?

 

[kris]

See what the tray manufacturer guidelines say as some plastic ones you get away with an adhesive and i like to use sticks like sh$t as dont have the thick bead of cement to hide . But most are still cement. Good call john with pva ...

 

[townfanjon]

James I am assuming this the usual stone cast resin type ( bloody heavy ones) they are sand and cement.
A good point from kris though about if it's the new very light plastic type ones, they can go on a bed of flexible tile adhesive.

 

[Aquablu]

We always use a flexible floor adhesive for shower trays, find it much better than sand and cement.

 

[Neil K]

I wouldn't, I'd take the floorboards up and cut, measure and put a piece of ply down. But that's me being particular, don't take it as gospel. If you're going to put it straight on the floorboards, I would take the other lads advice. Bit I would also pull the boards up, pull the nails out of them and replace with screws. Says you, if I'm going to go through all that bother just pull the boards up and replace with ply. Up to to you mate, your job

 

[Best]

Sand and cement is near unworkable with a light bed - and especially on dry wooden floorboards.
I would like to stand and watch the people who write the instructions of bedding the shower tray, doing it with sand & cement!
Flexible floor adhesive seems a proper way to do it. I must admit that I often use plaster to bed trays down where they need a thin bed & I can't see any thing wrong with that.

 

[Ermintrude]

Remove boards fit ply so level with tops of joists then a nice thick bed of compo

 

[smhstu]

I use ct1 or Adiseal