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Tiling

Any problems tiling from a floorboard room with 9mm ply on to a solid concrete floor?

Anonymous user 03/03/2024 - 3.06 PM

I have a kitchen/dining room which I wish to tile. I have porcelain floor tiles and want to tile continuously from kitchen through into the dining room with the same tiles. However, the kitchen floor is wood floorboards with 12mm ply screwed every 15cm and the dining room floor is solid concrete. The solid concrete floor is approx 3-4mm lower than the wooden floor. Are there any special measures I need to take or will it be ok just to tile straight through? I will be using flexible adhesive and grout on wooden floor and standard adhesive and grout on concrete floor.

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2 Answers

Excel Tiling

Rating: 5 out of 5

Manchester

Hi Best thing to do is use self levelling compound on the lower area to raise it to the exact height throughout. I would also fix more screws depending on movement to the ply. Bal super flex can go straight on to floor boards if they are secure. You will be best using a Bal flexi throughout which at trade from Topps tiles is £40 pound per bag and will do around 8 m2. This adhesive is super flexible so you will never get any issues if you use it. Also I use standard grout and use a gt1 additive which works out cheaper and you can make it more flexible. Also remember if your tiles are polished porcelain they will need cleaning and sealing twice. Good luck Kind regards Excel Tiling.

Answered16 March 2014

Anonymous user

First thing you will need to put a coat of SLC over the concrete floor to bring it level, the next is when setting out you must start were the two floors meet if you ride over the join it will crack thru the tile, so set off with a whole tile joint either side of the join and when grouting leave this grout joint and infill with silicone giving you an expansion joint, or you can get a movement joint profile. In my opinion I would remove the ply and go with 6mm tile backer board glue and screwed you get to many problems with ply which is a thing of the past, now that you can use backer board.

Answered16 March 2014