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Discuss Opinions please on subfloor-not level-see attached pics in the The Welcome Forum area at TilersForums. USA and UK Tiling Forum

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crushedolive

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Thanks in advance...

Want to tile kitchen floor but looking for advice/opinions.

Floor is timber throughout- in the original part of the kitchen (to the left in pics) is floorboards, and in the newer extended part of the kitchen(seen on the right) is chipboard. 3mm ply has been laid over it all some time in the past and previous floor covering was sheet vinyl.
As one continuous floor the thing is not level. The original floor rises up slightly at its end where it meets what was previously the original back kitchen wall. Here a piece of timber(length of floorboard) has been laid at right angles to the rest of the boards and sits on top of the remaining part of the old kitchen back wall. Then the floor continues into the new extension part but this slopes downwards, away from where the floors meet.
If I lay 12mm ply over the lot would I get away with tile it (12" ceramics) as things are? Was thinking of putting a grout line all the way across where the floors meet and where it starts to slope away? No doubt would see a slight hump all the way across but so long as the tiles were securely fixed i could probably live with that as an alternative to ripping up the whole of the subfloor. It's a job for family but the house is to be rented, so perfection is not a necessity.
Hope the pictures explain better than words.

IMG_0067.JPG IMG_0068.JPG IMG_0069.JPG
 
Last edited by a moderator:
OP
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Bill

You would be better using cement boards to cover the entire floor, it has more strength than plywood and is less likely to move or shrink.

You could use 12mm cement boards in the lower part and then 6mm on the rest, plus you could then use a decent flexible levelling compound to make the whole floor as flat as possible (it may not be level but it should be flat)

One more point, what are the tiles you will be using - please state makers name please as this is important to see if they are suitable and not just a salesman's recommendation.
 
OP
C

crushedolive

Sorry not chosen tiles yet- what are the considerations when choosing? Is the cement board screwed down AND fixed down with https://www.tilersforums.com/forums/tile-adhesive/ or just screwed?
 
OP
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Bill

Sorry not chosen tiles yet- what are the considerations when choosing? Is the cement board screwed down AND fixed down with https://www.tilersforums.com/forums/tile-adhesive/ or just screwed?
Screwed and glued and a porcelain tile would be better than a ceramic one on the floor.
 
OP
C

crushedolive

OK many thanks. Just looked at the price of the hardiebacker on Topps - got a trade acc. with them- looks to be reasonably priced compared to the cost of ply.
 

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