Hardwall Plaster - salvage what is good or remove all and dot and dab?
Anonymous user 15/03/2024 - 2.56 PM
Hello,
I have a 4 bed, 3 storey terrace with a number of external/party walls which have been hardwalled. I have removed some plaster on the ground floor to allow for damp works already which has created a load of mess and waste. Going around the house it sounds as if the plaster has blown in patches on all the walls. However this still feels quite sold, as if there is a sold skim layer and then underneath that is what has blown? The question is would you salvage what can be salvaged and patch the walls. Or remove everything back to brick and re-hardwall or dot and dab?
Also i understand if I remove so much of the plaster, whatever the replacement needs to be up to current building regs??
Are you a tradesperson and able to answer this question?
I would advice removal of all plaster back to brick, the reason for this is to ascertain why the plaster has blown in the first place. The adhesion of hardball to brick should be really good therefore it requires further investigation. Brickwork if dry has very high suction rate sometimes to the point that it will cause hard wall plaster to set to fast and crack, therefore sometimes plasterers will apply PVA to slow it down to its correct setting times however if this is done incorrectly it can affect the how it adheres to the wall. Hence strip it back correctly prepare the substrate and replaster. If you hardwall and finish plaster a wall it will be far more impact resistant than a boarded and finish plastered wall it is just a matter of preference.
I hope this is of use, good luck with your project.
G Brown.
T/as BPF
This is bit of a grey area without seeing it. But it's a big expense and mess to remove all the plaster and replaster or dot and dab. Without looking I would say if the blown areas have cracks running through them they would need cutting out and make good. If it's several areas on one wall then take the plaster off that wall. You can take off just the the blown areas and re skim the whole wall. like I said to take all off all over is quite a big expense. Hope this helps a little.
Answered29 April 2020
0
Anonymous user
Strip back to brick, then hardwall or dot dab the full wall
