Preparation What tile adhesive to go for?

[Rhodri]

Hi, been looking all day and no closer to finding a suitable adhesive.

It's for bathroom walls, tiling on top of the current glazed tiles on 3 out of the 4 walls. 4th wall tiles have pretty much fallen off so am pulling the others off.

Tiles are 600x300mm and each tile weighs 3.95kgs!

Can't find anything which ticks all three of those boxes. Closest I've found is an evo-stik pre mixed adhesive. Says suitable for on top of tiles and 600x300 but only up to 3.5kgs.

Nothing else seems to come close.

Explores cement based ones but wondering if too difficult for my limited abilities using one of these with shorter pot lifes etc .

Any help much appreciated

Thanks

 

[Flintstone]

It’s not wise to stick those tiles over the old tiles As it will be far too heavy for the wall, and if some have already fallen off I guess there not stuck all that well. Take them all off

 

[Rhodri]

Thanks for the reply. Think the reason they've come off the one wall is it's the external wall and in the past damp got in and they came off wall. This is why previous homeowner used pvc cladding over tiles. The house has been externally clad since so no longer gets damp.

 

[Qwerty]

I wouldn't dream of tiling on tiles with 30x60 porcs. You will most likely exceed the permitted weight limits and the walls sound in poor condition. And using a pre mixed adhesive in your circumstances is a massive no no. I take it that the walls are plastered?

 

[Rhodri]

Yes plastered some years ago. What is my best bet then? Cost wise mainly but ease too?

Take tiles back and get smaller/lighter ones and continue with plan or keep tiles and knock the whole lot off and tile over the walls? Or get it remastered soon. Was hoping wouldn't have to get it plastered. And the Mrs friend in work said this way was feasible, knew the guy was full of it when he did a job for us before which was terrible!

Cheers

 

[Rookery]

Ignoring all other aspects of the proposed job, you need a cement based powdered adhesive you mix with water. Mapei Adesilex P would be my choice. Its not dear and has a long pot life. The rest of the job is full of ifs buts and maybes. I wouldn't bother to re-plaster. You're paying for another trade and a finish you're going to cover up. Your best bet might be to overboard all the walls with plasterboard, tank as required then crack on with your 60 x 30's.

 

[Rhodri]

That's great. Glad I asked now! Thanks

Will I need a trowel to apply the adhesive? Only tiling I've done before is the kitchen wirh much smaller tiles and a premixed adesive and did that with a plastic notched thing... lol

 

[Flintstone]

100% you should take off the old tiles, see what’s there, post a photo and go from there.

 

[Rhodri]

Cheers all. Was going to start Saturday so will pop a picture up then. I'll put a photo of the one half that's off tomorrow when get in from nights.

Appreciate the helo

 

[Rhodri]

Help

 

[Rookery]

Yes a 10mm notch trowel should suffice. Not too dear.

 

[Rhodri]

Great! And mix it all up by hand can I or should I borrow a mixer off my plasterer mate and flexi tub?

Which Mapei Adesilex P? 9?

 

[GoneGuy]

I would recommend knocking all old tiles off, reboard with plasterboard and use a cement board in wet area/shower.
Doing this will give you a nice flat surface for you to start off.
As said in other posts use a cement based (powder) adhesive and mix with a paddle mixer in a flexi tub and make sure you follow mixing guides on the bag.
As with trowel size 10mm should be good as if you re board you will have a nice flat surface so you won’t have to pack out any tiles.

 

[Rookery]

Yes Mapei P Nine. Someone's nicked the number off my keyboard. You can mix by hand but its better to use a clean whisk.

 

[Rhodri]

Thanks very muxh. Will throw some pictures up on Saturday

 

[Rhodri]

Due due, looks like I have to order this P9 adhesive online, can't source it local anywhere!

 

[Rookery]

There's lots of alternatives but I'd get it from CTD Cardiff. It's not expensive. Tile Giant have it too or there's other slow set powders by other manufacturers such as BAL.

 

[Rhodri]

Have just found it on tile giant website at double the price of online

 

[Rookery]

Ring them up,
Ask if its in stock
Ask how much is it
say "how much" in a loud voice
See what they'll do it for.
Should be under £18
Never take an on line price for something like this

 

[Rhodri]

here goes!

 

[Rhodri]

Nothing they can do. Seems there may have been if had a trade account with them. What about Weber Set Plus from CTD?

 

[Rookery]

Yes that'll do. Same CTD as Mapei so same trade account issue? Probably same price too.

 

[Rhodri]

The Weber can get for £23.52 each and need 2 at CTD.

Adesilex at Tile Giant is £35 and need 2 also...

 

[Rhodri]

Is there any alternatives in the likes of Wicked, screwfix or b&q before I order one of these online?

Unibond Rapid Set Wall & Floor Tile Adhesive Grey 20kg - https://www.NoLinksToThis/p/unibond-rapid-set-wall-floor-tile-adhesive-grey-20kg/7840c#product_additional_details_container

Or

Mapei Mapeker Rapid Set Tile Adhesive Grey 20kg | Wickes.co.uk - http://www.wickes.co.uk/Mapei-Mapeker-Rapid-Set-Tile-Adhesive-Grey-20kg/p/102976

Thanks

 

[Rookery]

Mapeker is OK for porcelain but the Unibond I don't know. Both of these seem to be rapid set so if you're not an experienced tiler, it doesn't matter how cheap they are, you're going to throw half of it away as it'll be going off too fast for you. I'd still stick with the Adesilex P9.

 

[Rhodri]

Yes was worried about the speed. I was thinking is make up smaller batches instead mixing the lot up?

I've bought the Adesilex now in any case. Bought online for 15 quid a bag plus a tenna postage. Just won't be done as quick as the Mrs would like but hey ho!

Cheers

 

[Rookery]

You've made the right choice. Mrs will have to wait.

 

[Rhodri]

Well I'm pulling it off. Window wall I could basically pull off with my hands so very lucky didn't tile straight over that!

Plaster seems to be coming off easier than it Should, especially in window recess

 

[Rhodri]

One more for now

 

[Rookery]

Hmmm. The state of the substrate makes me think it should all be taken back to brick then over-boarded prior to tiling.