Can I tile straight onto Floor levelling compound?

mk2phil · 1 Jul 2008

Hi all,

Just had the concrete floor in my conservatory finished, but it has quite a fall on it. The builder has added some floor levelling compund to try and solve it, and it has helped, but not much. Can I build up the tile adhesive to counter the fall...i.e. at one end of the room there might be 4mm worth of adhesive under the tiles, but at the other end it might be 15mm?

Secondly, I'm installing electric undertile heating which requires a heat reflecting board to be fitted to the conctrete first before the heating element.

I know I can use flexible adhesive stuff to attach the boards, but can I use it straight on the floor which has had the levelling compund applied, or do I need to seal the floor before I apply the adhesive with something like PVA? The floor has since gotten quite dirty (plasterer been in) and is slightly dusty/pourus.

Thanks in advance

Ratter · 1 Jul 2008

Tiling adhesive is much more expensive than leveller - I'd get him to come back and add some more until it's nearer true.

mk2phil · 1 Jul 2008

I've had enough of him - he's been a nightmare. Would much rather rectify it myself.

jefoss · 2 Jul 2008

id level it again matey, be better in the long run...

you dont need to pva it afterwards either.

mk2phil · 2 Jul 2008

pull it all up and start again? Or go on top of the existing levelling compound?

But if I decided not to level it, could I take up the fall with the adhesive if I wanted?

Bahco · 2 Jul 2008

I would think the compound will be stronger than adhesive!

jefoss · 2 Jul 2008

mk2phil said:
pull it all up and start again? Or go on top of the existing levelling compound?

But if I decided not to level it, could I take up the fall with the adhesive if I wanted?

just go over the existing, give it a clean up too if the plasterer has been in, i know how dirty those buggers are!

i wouldnt try to level it with the adhesive if i were you, it can be done but time consuming, even more than the actual level, why not get a tiler round to yours and talk to him fella, he'll say the same.

gcol · 2 Jul 2008

jefoss said:
just go over the existing, give it a clean up too if the plasterer has been in, i know how dirty those b*****r are!

Don't listen to him Roughcaster!

jefoss · 2 Jul 2008

lancenotalot · 5 Jul 2008

gcol said:
jefoss said:

just go over the existing, give it a clean up too if the plasterer has been in, i know how dirty those b*****r are!

Click to expand...

Don't listen to him Roughcaster!

Im afraid he's right

,just done some decorating and they had the ceiling replastered,it was everywhere,on the floors,walls,fireplace,skirting,sills and even some on the windows.Lucky I had my trusty old scraper with me

mk2phil · 9 Jul 2008

Ok if I decide to level it again (using the mira-x stuff as you can build it up to 50mm apparently) do I need to PVA the existing levelling compund beforehand if I apply it straight over the top? The plasterer has made a fair amount of mess on it.

What sort of PVA? 5-1 watered down ratio?

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Can I tile straight onto Floor levelling compound?

Similar threads