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Plastering & Rendering

Paint Cracking: Update

Anonymous user 28/02/2024 - 4.06 PM

Hi posted a question a this week (Cracks At Top Of Wall (Ceiling)) and had some good advice thanks. After further investigation it appears it is the paint cracking and peeling off leaving bare plaster so no cracks in the actual plaster. This is now in almost every room in the house. So we moved in approx 4 months ago and just refreshed the wall with white johnstone emulsion, walls were already white so just a fresh coat and haven't touched the ceilings. However Ceilings when running fingers over are leaving a white chalky residue on my hand and as mentioned walls are cracking/peeling. I now have a theory that the previous owners during recent renovation just painted onto new plaster without sealing or mist coat. Does this sound plausible and how can I fix this now? Can I seal every wall & ceiling at this stage?.

Are you a tradesperson and able to answer this question?

4 Answers

Anonymous user

As far as I understand, you say that there is no crack in the plaster, there is cracking and swelling in the paint. There are several reasons for this. Some of these = poor quality of the primer paint used after the plaster, painting before the plaster completely dries, dusting of the plaster surface, painting in unsuitable weather conditions, applying the second layer of paint before the first layer of the paint dries.

Answered20 January 2023

Rhys Denholm

Rating: 5 out of 5

Hull

Use a dry stiff brush to brush the effected areas clearing all chalk and loose materials, then use stabilising solution in the effected areas (acts as a base coat) Once dry it will be suitable to paint over.

Answered20 January 2023

Prestige Decorating

Rating: 5 out of 5

Drybrook

Usually see this happen in bathrooms from the moisture there was probably a issue with ventilation and moisture levels prior to moving in especially if it’s along the ceiling line, or yes as said painting on plaster that hasn’t fully dried with a cheap paint can also cause this to happen as you said recent renovation..remove all loose paint fill it flush and coat in a binding primer, stabiliser or zinner peel stop then go in with your choice of paint, same with the chalking ceiling remove all powdery paint then seal it prior to painting.

Answered2 February 2023

TKR Plastering

Rating: 5 out of 5

Fakenham

Obviously plastered wall not been prepped, should be lightly sanded before a mist coat of 50/50 water and emulsion is applied so it keys, people love a shiny plastered wall but unfortunately paint does not

Answered5 February 2023