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Plastering & Rendering

Skim over existing or remove and replaster?

Anonymous user 15/03/2024 - 2.41 PM

Hello, we are renovating a 1930's property and I have removed the plaster from most of the walls all the way down to the bricks, but the plaster on a few walls seems to be decent with only minor hairline cracks (after removing wood-chip wallpaper). When it comes down to cost, what would be the cost difference in PVA/Thistle-Bond-It followed by 2 layers of skim over existing plaster, or new wet plastering, ready for painting, over brickwork (assuming I undertake removal of old plaster)? For simplicity lets suppose we have a 4x4m wall. I am just wondering if it's worth leaving the existing plaster on or wet plaster as new.

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2 Answers

Anonymous user

Hello , in answer to your question I would leave the old plaster on since unless its loose the old plaster ( a mixture of lime and horsehair) tends to be off a very high quality. As for the cracks, simply cover them with scrim tape , pva the old wall and then just plaster over the old wall with new plaster and it will be fine. It is the cheapest option and the easiest. Given the choice , I personally would never take off old plaster unless it needs to come off.

Answered17 July 2018

Anonymous user

Hi, if you have gone that far and taken most of the old plaster off the walls I would take off the rest of it and have all new plaster, as it’s most likely to be loose anyway, as this is probably lime and you probably get hair line cracks back again. this is just my advice from doing renovations as I’ve found out.

Answered16 July 2018