I will shortly be installing a quadrant shower enclosure in the corner of my bathroom. I have clad one wall with AQUAPANEL which is absolutely flat and level. The other wall is pink bare pink plaster (I sanded off the paint).

I was going to simply prime the pink plaster with MAPEI primer G and crack on with the tiling but I put a long spirit level across the wall and it is quite uneven (up to 10mm lumps and holes. I believe it will be easier to tile onto a flatter surface but I am not sure what the best approach is to get this wall flat. Can anyone tell me the best method and the materials to use? or maybe I need to get a plasterer in to skim it?

Thanks

Steve

Hi steve,,

What tiles are you using..?

hi i would over board it if you can ,but skim is cool ,i would still seal the skim thats there with your primer-g first

Originally Posted by TT Tiling

hi i would over board it if you can ,but skim is cool ,i would still seal the skim thats there with your primer-g first

Skim is only ok if the tiles are a certain weight, over board is a better option.

you wont build skim out 10mm Steve! personally I'd be hacking it off and re-lining it, with either cement board or plasterboard.

if the tiles you are using fall within the weight ratios and plastering is your prefered option then i'd...

give the wall a good rub down,
give it a coat of sbr primer, mabe 2 inplace of pva. leave it to dry a few hour, preferable overnight.
then put on a nice tight coat of carlite bonding around 8mm to build it out and then around 3-4 hours later, skim it, so it all goes off nicely together...

but if it was my choice and theres enough room, id overboard with a nice thin wedi board ....waterproof, thermally efficient and strong to tile to!

ed

me to mr aston

Originally Posted by AstonTiling

if the tiles you are using fall within the weight ratios and plastering is your prefered option then i'd...

give the wall a good rub down,
give it a coat of sbr primer, mabe 2 inplace of pva. leave it to dry a few hour, preferable overnight.
then put on a nice tight coat of carlite bonding around 8mm to build it out and then around 3-4 hours later, skim it, so it all goes off nicely together...

but if it was my choice and theres enough room, id overboard with a nice thin wedi board ....waterproof, thermally efficient and strong to tile to!

ed

only problem there Ed is that you're adding extra weight to a skimmed surface, unless you mechanically fix it.

true doug...if they are prepared to hack off and start again, then that would be an even better route

ed

tbh Ed, for the hassle it takes to hack off, which I think is negligible, it's the route I take 9 times out of 10

just thinking ,,,wot would you do if it was a full wall and had a chemical damproof injected into the wall ? would it be ok to dot and dab boards and would it affect the DPC ?

Gents,

Thanks for the information thus far.

Some more information:-

Tiles are porcelain 600mm x 300mm x about 9mm thick. A pack of 9 tiles weighs 23kg so its 3.83kg per tile.

The wall is cement render onto brick with a standard pink plaster finish coat. Not sure how well anything is keyed to the stuff underneath?

I could hack the plaster and render layer off back to the brickwork but I believe that if I want to put an AQUAPANEL on to the wall it needs to go onto battons (Knauf say its a total no-no to dot and dab the stuff). Battoned aquapanel is going to build out the surface way beyond the normal wall and look nasty. Not sure about the wedi board stuff? Can I just plug and screw this stuff direct to the wall?

Steve

Originally Posted by terry the tiler

just thinking ,,,wot would you do if it was a full wall and had a chemical damproof injected into the wall ? would it be ok to dot and dab boards and would it affect the DPC ?

does that not just coat the inner blockwork in the cavity tho'?