Could any one give me some good advice on how to raise my old kitchen floor by 20-30mm so it is then the same height as my kitchen extension. the floor area is about 25m2 and will be tiled.
Thin for a sand/cement screed,even bonded,no cheap way to do this job, going to be leveling compound, or a pumped screed (Liquid Screeds) there are firms who will do small area's, like example below. http://www.expressliquidscreeds.co.uk/ There a bug on this forum, so remove the (S) from http.
No Kiab it's me that's not seeing right (must be the Xtra lge G&T I've just sunk) Post title mentions 'concrete' , although not mentioned in the actual post Also seen he's posted same question earlier and received the answer ! ?
you just need to dig floor and will construct with concrete, screed. after will conduct kitchen which you want such countertops, worktops in marble, quartz, granite.
I've never understood why a 1" thick concrete screed on top of a firm concrete base would fail, but I've read this many times. Why wouldn't the new concrete adhere to the old and be ok? Thanks.
I would be interested i the responses to this. As I did this when renovating my son's house. I raised the floor over about 3m x 2m section by ~20mm. I laid some small section timber (20mm x 20 mm) across to give a reference level then filled in with sand and cement screed. That was five or six years ago and I am sure on advice from this forum. The base was about 150mm thick concrete. There whole floor are had been covered and no known problems have occurred. Steve
I am no tiler but do do a lot of vinyl, laminate and solid floors. I do a fair bit of levelling work too. When I did my own kitchen I had to raise my floor 200mm to bring it level. I also was installing underfloor heating. I did a dpm with 100mm of celotex. Then a border of 25mm celotex against the wall. another dpm and then 65mm concrete. That brought me roughly to where the OP is now. 30mm shy of whats required. I acrylic primered the cured concrete then laid XP Pro Insulation Boards that I think were maybe 15mm. Acrylic primered the boards then taped he heat mat down, set it in about 8mm of self leveller and then tiled. Couldnt the OP use a XP Pro Board to take up quite a bit of the height. Would be a lot cheaper than self leveller. If I was him I would lay the heat mat too. Its not that expensive. It also would save quite a bit of the volume of levelling compound. I am fairly certain I followed all the instructions and methods right on it.