painted plasterboard

[grumpygrouter]

Why has nobody mentioned 1. The tape test? (a recognised test) and 2. Asked what tile he is intending on installing (ref weight limit) ?


If the painted wall passes the tape test (in several locations to be safe) and the tiles are lighter than the holding weight then the paint is doing the job of the primer.


If it fails the tape test or the weight is higher than the holding surface then replace the plasterboards (cheap and easy job – and very much cheaper than replacing tiles falling off in 6 months)

It depends if the painted surface is gloss or emulsion. Elmusion paint should never be tiled on really as it can go soft on contact with moisture and affect the bond of the adhesive.

 

[Stan001]

grumpy - 100% agree ref emulsion - i forgot to add that, thx for adding that

 

[Gazebo]

Never known anyone to put gloss on walls, so the whole debate was a bit ott if emulsion is in place. which i'm sure is nearly always the case on walls.

 

[Stan001]

Never known anyone to put gloss on walls, so the whole debate was a bit ott if emulsion is in place. which i'm sure is nearly always the case on walls.

I have seen plenty of non emulsion (especially in bathrooms), normally that semi matt or sometimes quite high gloss bathroom eggshell type paint - some of it (the paint) is firm, some patchy, some flakey. Tape test will tell you if its good to tile or not.

 

[The Legend; Phil Hobson RIP]

I would prefer where poss to remove by sanding just the paint. I believe scoring can not only damage the board, But even if you score diagonal criss cross at 20mm intervals then prime. You are only getting a good bond on a tiny percentage of the wall.

 

[tfs]

I never said it was, it was an anolgy I used to illustrate that just because it had "been done that way for years" that it doesn't necessarily make it right. Everyone has their own way of doing things and that is what the forums are for, to allow people to read the advice given by contributors on here, compare that advice, contradictory or not, and then make their own informed decision from that information. I think we both agree though that it would be better to re-sheet than waste time removing adhesive or paint if possible. It isn't always possible though!

Cant believe the amount of bickering I participated in mate :lol:

It was a situation that I would be very unlikely to be in as I would have insist on reseheeting. Looking at both sides I believe that both scroing and the use of steam are not ideal ways to tackle plasterboard.

Appoligies to all for having to view all the bickering! I cant hep myself after a few beers.

:hurray:

Im sure some guys might have found it entertaining tough:lol:

 

[Gazebo]

Fancy a pint.?:incazzato:
:8:
:smilewinkgrin:

 

[doug boardley]

Cant believe the amount of bickering I participated in mate :lol:

It was a situation that I would be very unlikely to be in as I would have insist on reseheeting. Looking at both sides I believe that both scroing and the use of steam are not ideal ways to tackle plasterboard.

Appoligies to all for having to view all the bickering! I cant hep myself after a few beers.

:hurray:

Im sure some guys might have found it entertaining tough:lol:

I didn't

 

[shogun rua]

hi ,

Whats the tape test?

Cheers

Paul

 

[White Room]

Put some, say duck tape onto the paint, wait a short time then pull it of and see how much paint gets pulled off

 

[shogun rua]

hi ,

Whats the tape test?

Cheers

Paul