Dip in screed

[burble]

I'm about to begin tiling my concrete kitchen floor. There is already screed on there from the vinyl that I've removed, and it's pretty flat throughout - but whoever laid it wasn't a perfectionist, and there are a couple of dips and gaps at the edges which make the tiles wobble when I'm setting them out. I'm wondering if I can get away with flattening them out with a bit of extra adhesive while I'm tiling, or if I need to look at filling them first with concrete or a levelling compound.

My main concern is a dip of 1-2mm deep and about 5cm wide, where I'll eventually want to put the foot of a washing machine.

Obviously I don't want to cut corners and end up with vibrations from the washing machine cracking a tile, but equally I don't want to make unnecessary work for myself if adhesives can handle this sort of thing. Any advice appreciated

 

[marty the tiler]

hi use good quality adhesive fill up those areas with extra glue and im sure u wont have any probs

 

[paulyoung666]

SLC it

 

[burble]

Thanks for the replies!

SLC - would that be something like Floor Level Compound - 12.5kg from Homebase.co.uk?

Would I need to cover the whole floor, or can I just put a bit of it into the dips and missing bits around the edges so it'll be flat with the rest of the screed? I'm worried about adding too much to the floor level you see - the cabinets are already in and we'll need to fit the washing machine etc under the worktop.

 

[mikethetile]

you can slc localised areas which wont raise your floor level, use a cement based addy under your tiles. if you just have a few low areas at no more than 2mm then you will get away with adding extra addy to these points to bring your floor level but ensure you have a solid bed to avoid the tiles cracking

 

[White Room]

At 1-2mm deep, as above......

BS is 3mm over 2 metres so it's well within that.