Damaged plasterboard - OK to tile on?

[NoClue]

The attached pics show the state of the plasterboard in my bathroom having removed existing/old tiles. Damage only half way up wall (to old tile line). Its wooden stud wall.

Plan is to re-tile with 600 x 300 x 9mm porcelain (floor to ceiling... heavy!!!).

Anyone have any advice on whether the surface is adequate to continue without replacing?

I've been supplied with Butech flexible adhesive and bonding agent.
Thanks for your help.

[dagger]

if you can remove the boards and screw new ones up, DO IT!

you can put them up nice and flat and they will hold a lot of weight!
and it saves you stripping the lining paper and paint off.

[brian c]

that old adhesive needs to come off and so does the paper..your call really!

either rip down and replace or scrape off.

[Daveyboy]

It's not excessive damage so you should be ok to tile over it once you have primed it..but as dagger says, if you can afford to replace the boards (£5-6 a 8'x4' sheet), then do it...

[Oli]

Replace them, you dont know what damage has been done to them whilst removing the old tiles, there may be cracks in the board you cant see, also there may be some old damage to them, your asking them to take a fair bit of weight, and they dont cost much to replace, no more than a fiver a board, and a few quid for some screws, you'll have a nice new flat surface to tile on aswell.

It will also give you the oppertunity to tank out the room properly in the shower area.

Not used any Butech stuff so cant really offer any advice on that.

[doug boardley]

replace them imo, looks to be beyond repair, espescially for porcelain tiles

[brian c]

Butech is from porcelanosa i believe.Didnt like the grout much.

[tileexperts]

Yep if it was me i would replace, to risky.

[djr tiling]

if your going to replace it go the hole hog and use aqua board it will never suffer water damage again .
and it really wont cost that much in the grand scheme of things

i hope the butech addy has got better since i used it a few years back .........i couldnt get on with it and dont even talk about the grout

[Superally]

you said that it was only damaged half way up the wall so is the upper half painted????? Like others I say rip it out and reboard!

[NoClue]

Thanks for the advice guys.

It was tiled half way up previously.
Above (the top half) looks like it was papered on top of a previously painted surface.

I'm not the worlds greatest DIY-er - so didn't especially want to be ripping out the plasterboards - but may have to (just in places possibly).

Am I right in thinking that to repair/prep the area I would just remove all the old adhesive - exposing the brown cardboard/paper of the plasterboard (prior to sealing). Even though some of the old adhesive seems fairly strong.

Cheers.

[mags]

Thanks for the advice guys.

It was tiled half way up previously.
Above (the top half) looks like it was papered on top of a previously painted surface.

I'm not the worlds greatest DIY-er - so didn't especially want to be ripping out the plasterboards - but may have to (just in places possibly).

Am I right in thinking that to repair/prep the area I would just remove all the old adhesive - exposing the brown cardboard/paper of the plasterboard (prior to sealing). Even though some of the old adhesive seems fairly strong.

Cheers.

You wont beleive how easy screwing board up actually is , its the skimming with plaster thats the skill, and if your'e tiling then you dont need to do that , just seal the boards . As said before id use a better watertight board than gypsum anyway.

[beanz]

It's gonna be much more hassle to get your existing walls ready for tiling, than to replace the plasterboard. Use Aquapanel (or similar), as the boards are not only waterproof, but they are smaller and easier to handle than 8'x4' Plasterboard. If you choose to stick with your existing board, you'll have to get all the paper/paint off too.... @ss of a job!

[Ajax123]

The paper coating on the plasterboard adds a great deal to its structural integrity. If the paper is damaged to any great extent the plasterboard is basically knackered. I'd take it off and replace it personally for the sake of what a few sheets of board costs and the peace of mind it give. Taking the old boards out is pretty easy.