Cracks in plaster after heatwave

Cracks have appeared in our plaster after the heatwave, is this due to the heat or just a coincidence?

Asked by carole on 2nd Dec 2022
Expert Trade Answers
"It’s appeared because 1 of point is drying too quick"
Answered on 5th Jan 2023 - Member since Jun 2021 - report
"Hi guys

Firstly if their was structural work done to that could be settling cracks , if not it could be heat but you generally get shrinking or worst case the plaster finds it’s going on Ff to quick as he’s putting it on .
In my opinion get the plasterer back and ask for his advice and opinion, if he’s not willing then get a second opinion from another plasterer ."
Answered on 2nd Dec 2022 - Member since Mar 2022 - report
"Sever exposure to heat can help cracks to appear however it could also be a combination of age and then the heat helping it to crack."
Answered on 19th Feb 2023 - Member since Feb 2023 - report
"This could be both heatwave or voincidence
Backing coat under the skim may have perished depending how old the house is.
If its dot and dab plasterboard it might of moved on the joints."
Answered on 2nd Dec 2022 - Member since Nov 2022 - report
"There's many scenarios that may be linked with the cracking such as subsidence etc and movement. Hopefully it's a simple case of the plaster/boarding swelling in the heat which has caused the plaster to crack. If possible get the issues sorted ASAP as leaving it could lead to alot more problems and alot more expensive to put right"
Answered on 2nd Dec 2022 - Member since Nov 2022 - report
"Losing the water to quickly can result in lower strengths and short any traditional plastering or render without proper supporting materials will always risk for crack"
Answered on 3rd Dec 2022 - Member since Nov 2022 - report
"Cracks of less than 5 millimetres wide are usually a crack in the plaster, rather than the wall itself, and can be filled and decorated over. Cracks between 5mm and 15mm wide are more likely to be serious and may need professional repairs. Any crack bigger than 25mm wide should definitely be examined by a professional."
Answered on 22nd Dec 2022 - Member since May 2022 - report
"No it shouldn’t crack even with the heat if it’s prepared people before skimming as in two thick coats of pva and left to dry it be ok"
Answered on 15th Jan 2023 - Member since Sep 2022 - report
"I'd it drys too quickly, it can crack. Or any movement in the building, will make it crack. But if it was dry and ok , the heat wouldn't crack it alone. So I'd say coincidence"
Answered on 3rd Dec 2022 - Member since Oct 2022 - report
"The hot, dry weather is putting people's homes at greater risk from subsidence. Subsidence happens when the ground under a property collapses or sinks lower. This uneven movement may result in structural damage such as cracks in walls, floors and ceilings, which can be expensive to repair."
Answered on 2nd Dec 2022 - Member since Sep 2022 - report
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