A while ago I asked about rendering internal thermalite walls, and you advised to use a scratch coat with waterproofer etc.
Well, I prepared the walls with battens, all nicely levelled and flat. Did the rendering as advised, with a plasterer friend. Got the skim on a couple of days later. The most beautiful flat wall you have ever seen....
But within a couple of days, the plaster had cracked, and now the render is cracked, and floating off the wall by a good few mm.
So I guess there's something wrong with what I did. Now my dilemma is whether I do anything about it, or whether I just go ahead and fit the kitchen and tile over the suspended sheets of rendering.
Any thoughts?
Perhaps it should have had dot & dab plasterboard?
Perhaps I should have used hardwall?
Perhaps I should have used pva?
PS The render and skim on concrete blocks is fine, as is the skim on plasterboard.
Well, I prepared the walls with battens, all nicely levelled and flat. Did the rendering as advised, with a plasterer friend. Got the skim on a couple of days later. The most beautiful flat wall you have ever seen....
But within a couple of days, the plaster had cracked, and now the render is cracked, and floating off the wall by a good few mm.
So I guess there's something wrong with what I did. Now my dilemma is whether I do anything about it, or whether I just go ahead and fit the kitchen and tile over the suspended sheets of rendering.
Any thoughts?
Perhaps it should have had dot & dab plasterboard?
Perhaps I should have used hardwall?
Perhaps I should have used pva?
PS The render and skim on concrete blocks is fine, as is the skim on plasterboard.