Vinyl tiles over ceramic tiles

[miniman]

Our en-suite floor is tatty and frankly I cannot be arsed to pull it up. If I was to lay vinyl tiles over the top, having filled the grout lines, would the grout lines eventually show through? I know it’s a bodge but I’m not spending on a full refit until the boys have left home

[RGG]

Put some self levelling compound down 2-3mm first

[InformationSuperHighway]

Do it properly or not at all as my father used to say

[OldPal]

Need to screed it, will also need a primer or a screed with a built in primer, something like f.ball 1200 or ardex NA.

If you just fill the grout holes it’ll either shrink or pull whatever you’ve used to fill it out of the grout lines.

Anything less and you’ll be giving yourself a right headache

[Huzzah]

There is some dedicated LVT/laminate stuff designed for the purpose. Speak to your local flooring supplier they'll know.

Bathroom fitter used some in our shower room.

Edited by Huzzah on Wednesday 17th December 18:20

[T1547]

Clean the tile surfaces and check none are loose

Prime the tiles with a gritty primer such as Eco Prim Grip https://www.toolstation.com/eco-prim-grip-plus/p69...

Apply a fibre-reinforced self levelling compound such as Ultraplan Renovation Screed 3240, from 3mm+.

Apply vinyl finish.

There are other feather edge mortars that can be applied less than 3mm but require some trowel skill to get a flat finish.

Qualifications: worked for Mapei for years.

[scot_aln]

For various reasons we have done this 3 times.
1) So as recommended above we've had levelling compound across the tiles and then Karndean/LVT.
2) Self levelling and self adhesive LVT
3) Finally in very small cloakroom self adhesive LVT straight onto the tiles. This was intended only as a stop gap until a refit but 3 years on you still couldn't tell there were tiles below so other rooms/holidays and whatever have taken precedence.