Making good walls

**Brian.Evans** · 23-03-2009

I have started a bathroom job while taking off the tiles the top skim from the walls come off as well and in some places exposng the brick work. Im looking for the quickest ( and the easiest) way to prep the walls ready to tile on again?
Will I have to strip back the walls back to the brick and re plaster or can I dot and dab with plasterboard, or do you think I should fit ply or hardy backer boards?

**tileform** · 23-03-2009

Depending on the tile type you could dot n dab plasterboard straight onto the walls. Weight limit is 32kg per m2 including adhesive

This would be the easiest.
Don't re-plaster as this reduces the weight to 20 kg m2

**Alan.P** · 23-03-2009

If the plaster is coming off down to the brick it might be worthwhile / safer to take it all back to brick in case of failure. You have the option of dot and dabbing either PB or HBB but re-enforce the grab with some plugs and screws as well.

EDIT: or just over board and plug and screw to the wall, depending on tolerances.

**Brian.Evans** · 23-03-2009

Originally Posted by Alan.P

If the plaster is coming off down to the brick it might be worthwhile / safer to take it all back to brick in case of failure. You have the option of dot and dabbing either PB or HBB but re-enforce the grab with some plugs and screws as well.

EDIT: or just over board and plug and screw to the wall, depending on tolerances.

Thanks guys for the feedback I think that is what i will do, I will strip it back then dot and dab some HBB and plug and screw it in just to be safe,

**grumpygrouter** · 23-03-2009

Originally Posted by Brian.Evans

Thanks guys for the feedback I think that is what i will do, I will strip it back then dot and dab some HBB and plug and screw it in just to be safe,

Hardie needs full coverage with adhesive I believe, not Dot and Dab. Also plug and screw through to the brickwork.

**Alan.P** · 23-03-2009

Originally Posted by grumpygrouter

Hardie needs full coverage with adhesive I believe, not Dot and Dab. Also plug and screw through to the brickwork.

MMmmmm, I'll wait for the jury on that, I was / am sure you can, but I wait to be shot down, again

**LM Ceramics** · 23-03-2009

id just dot and dab the walls

**Colour Republic** · 23-03-2009

How easy did the plaster come off the walls? is it old lime plaster that is shot to bits? when you hit to with a hammer and bolster does it come off in bits or does it explode into a cloud of dust? if it does then then dot and dabbing the walls may not hold

Got any pics?

**Aztectiler** · 23-03-2009

Hardie needs full coverage with adhesive I believe, not Dot and Dab. Also plug and screw through to the brickwork.
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That is exactly what I have been told Grumpy but have never had to do it, always tend to DnD plasterboard