Ceiling cracks updated post

Thank you to everyone for your responses it's very much appreciated just for context the ceilings up stairs after solar went in the loft.... have said they will fill them with filler but won't guarantee that it won't shrink or crack again which Is no good I my opinion as I could be in the same position again in 6/12 months.
Can these be repaired using filler or do they need repairing with full re-skim as I won't be papering them there going to be painted.
I'm seeking advice as I have spoken to a couple of local plasterers who have said filler is a quick short term fix (bodge job that looks ok) but within a short period of time it will perish and crack again. They also said a proper fix would be rake out fill sand and tape then a full re-skim. Just looking for professional opinion
Thanks in advance

Asked by Wayne on 27th Jan 2026
Expert Trade Answers
"Yea your plasterers were tight but the only 100% guarantee is to overboard and skim"
Answered on 27th Jan 2026 - Member since Mar 2020 - report
"Over board or use some external render mesh over the whole area to avoid and future cracks."
Answered on 27th Jan 2026 - Member since Jan 2026 - report
"Filler on its own is only a temporary fix. After works like solar panel installation, some movement is common, so the filler can shrink or crack again within 6–12 months.
The correct long-term solution is to remove the filler, properly fill any gaps, sand the surface, apply scrim tape, and then fully skim (re-plaster) the ceiling.
Since the ceiling will be painted (not wallpapered), a full skim is the best and most durable option to achieve a smooth finish and prevent future cracking."
Answered on 27th Jan 2026 - Member since May 2025 - report
Find Tradespeople, compare up to 3 quotes!
It's FREE and there are no obligations
Ask a Trade
Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.
Ask your question
Ask a Trade

Are you looking for advice on a DIY project or have a question for our tradespeople?

We'll email your question to tradespeople who are skilled in your chosen category.

Your question will be made public - please do not include any personal details.

{{ first(ask.errors)[0] }}

By continuing you agree to the Community Guidelines.

Report Content

{{ first(reportForm.errors) }}

Thank you

Your report has been created and will be investigated shortly.

Ready to get a price for your home improvement project?
Get started

Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year