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I'm installing a new shower tray and have found a good 800x800mm shower tray from plumbworld. Looking more closely the outside measurements is 82cm width. Now I have removed the old show tray and tiles, the space from one wall to the other is 83cm. Just too big. I want to tile down to the tray's upstand and get a good seal.

Problem is what do I do with the 10mm (5 mm each side)?

Thanks - sorry if this should be in the Plumbing forum :)

TimN

over board the walls with 12mm hardibacker on each side and the back of the cubicle! your 830mm space becomes 806mm! then install tray silicone in then tile your addy bed will be 6mm your tiles will be 10mm ish.... TADA job done

OK. You learn something new every day - not heard of that type of board before!

I didn't quite quite understand you last part about "addy bed"...

Why not just put 12mm board on one side and reduce my gap to just under 820mm, and the tray will fit neatly?

Thanks for your help.
TimN

hardibacker is a cement based backer board for tiling onto, its more imperviuos to water than plasterboards or wet wall plaster made by james hardy(google them) ! and your "addy bed" is the term for the depth of the tile adhesive on the wall or floor!

better to board all round to keep things square you will have a better finish when tiled as in equal cuts and such! also if you have an 830 gap line with 12mm boards both sides leaves you 806 - 800 for the tray leaves you 3mm gap either side then silicone around tray then once your tiles are on you will have approxamitly 12mm on the tray then another hit of silicone and you are well and truly watertight (if youve done it right)

mark i think he is saying that the tray is 820 and the gap is 830mm so he only has 10mm to fill to the wall!!

are you retilling. The before tile sealing strips will easily take that up. Google trimlux, sealux etc they take up to 20mm gap I think

big-all wrote:mark i think he is saying that the tray is 820 and the gap is 830mm so he only has 10mm to fill to the wall!!

well if thats the case BA then the tile addy and tile thickness will lose 5mm No probs!!!!!!!