Discuss Tile backer board under the shower tray or upto the tray? And shower tray installation method? in the Tanking and Wetrooms area at TilersForums.com.

J

JaonsS

hello

The floor is 18mm WBP Ply fixed to the floor joists.

Is it best to fit the hardie backer board over the whole floor, and then fit the shower tray onto the backer board, or fit the tray onto the ply floor then butt the backer board upto the edge of the tray?

Also, the tray instructions say to fit the tray onto minimum 18mm Ply using a sand and cement mix.
Ive only ever fitted trays onto a sand and cement mix but I see quite a few posts of people using tile adhesive and some even using silicone/nonails.
Whats the best way to fit the tray to either the ply or the backer board? Stick with the sand/cement method or go with tile adhesive?
 

Chalker

TF
Arms
628
1,058
Tadcaster
Fit the backer boards after fitting the tray. This, when boarded and tiled, will make the tray look nice amd low. You can fit most trays with tile adhesive ( I do) powdered flexi. Put silicone on the edges that go against the wall. Make sure you prime the floor and back of tray. Only use silicone to stick down if the floor and tray are perfectly flat.
When fitting the backer boards, keep them a few mm from the tray and fill the gap with silicone. This will stop the boards from squeaking! When there is any movement. ( there should be none! But do it anyway)
 
D

Dumbo

hello

The floor is 18mm WBP Ply fixed to the floor joists.

Is it best to fit the hardie backer board over the whole floor, and then fit the shower tray onto the backer board, or fit the tray onto the ply floor then butt the backer board upto the edge of the tray?

Also, the tray instructions say to fit the tray onto minimum 18mm Ply using a sand and cement mix.
Ive only ever fitted trays onto a sand and cement mix but I see quite a few posts of people using tile adhesive and some even using silicone/nonails.
Whats the best way to fit the tray to either the ply or the backer board? Stick with the sand/cement method or go with tile adhesive?
I have fitted a shower tray to a flat floor using silicone and it has failed . Ie cracked not had that yet with Tile adhesive . Although floor maybe flat not all shower trays are perfectly flat on the back . Recommend doing dry fit first the checking ĺevel with spirit level to see where you may need to use slightly more adhesive.
 
W

WetSaw

My van needs a new windscreen if anyone fancy having a go at it

Unfortunately with most being bonded now it's a pain but I've fitted loads in the past with my trusty bit of string!

The multitrader post was in jest, I prefer to do everything. I've got no one to moan at then for bad prep, being late etc!!
 

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Title
Tile backer board under the shower tray or upto the tray? And shower tray installation method?
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N/A
Forum
Tanking and Wetrooms
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Replies
22

Which tile adhesive brand did you use most this year?

  • Palace

    Votes: 5 5.0%
  • Kerakoll

    Votes: 8 8.0%
  • Ardex

    Votes: 6 6.0%
  • Mapei

    Votes: 24 24.0%
  • Ultra Tile

    Votes: 14 14.0%
  • BAL

    Votes: 28 28.0%
  • Wedi

    Votes: 3 3.0%
  • Benfer

    Votes: 2 2.0%
  • Tilemaster /Kelmore

    Votes: 19 19.0%
  • Weber

    Votes: 18 18.0%
  • Other (any other brand not listed)

    Votes: 11 11.0%
  • Nicobond

    Votes: 5 5.0%
  • Norcros

    Votes: 3 3.0%
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