How Much Does It Cost to Repair Plaster Walls?
From hairline cracks to full wall sections, here's what plaster repairs cost and what's worth claiming on insurance.
Plaster wall repairs are one of those jobs that can range from a quick afternoon fix to a significant outlay, depending on what you’re dealing with. In the UK, costs typically run from around £150 for minor cracks up to £1,000 or more for larger sections of damage. Here’s what to expect and what drives the price.
At a glance
- Repairing plaster walls typically costs £150–£1,000 depending on the damage.
- Materials, labour rates, and wall size make up the bulk of the cost.
- DIY can be a cheaper option but requires skill and time.
- Your home insurance might cover repairs in certain situations.
Average cost of repairing plaster walls
The cost depends on the type and scale of the damage. Here’s a rough guide:
| Damage level | What it typically involves | Estimated cost |
|---|---|---|
| Minor | Hairline cracks, small holes, surface patching | £150–£300 |
| Moderate | Larger cracks, sections of damaged plaster | £300–£700 |
| Significant | Extensive damage, large wall sections | £700–£1,000 |
| Full wall replacement | Complete replastering of a wall or room | £1,500+ |
Costs at the higher end are more common in London and the South East, where labour rates for plasterers are typically higher than the rest of the UK.
Key factors that affect costs
Several factors influence how much you’ll pay for plaster wall repairs:
- Extent of the damage: A single hairline crack costs considerably less than a wall with multiple areas of damage or underlying water damage.
- Size of the affected area: Larger sections or multiple rooms naturally mean more time and materials.
- Materials: Standard plaster is relatively affordable, but specialist materials like lime plaster, often required in older properties, can push costs up.
- Labour rates: Professional plasterers typically charge between £20 and £50 per hour, depending on location. According to Checkatrade, the average day rate for a plasterer in the UK is around £200 to £250.
- Location: London and the South East consistently sit at the higher end of the labour cost range.
- Access and preparation: If walls need to be stripped back, dried out, or treated before replastering, this adds time and cost.
DIY vs. professional repairs
For minor repairs such as hairline cracks or small holes, DIY is a reasonable option. A basic plaster repair kit costs between £20 and £50 and is widely available from DIY retailers. The job requires patience and some practice, but it’s manageable for most people with basic DIY confidence.
For anything more significant, bringing in a professional plasterer is worth the cost. Poorly applied plaster can dry unevenly, shrink, or crack again, leaving you with a worse result than you started with and a more expensive fix down the line. A professional will also spot underlying issues, such as damp or structural movement, that may be causing the damage in the first place.
When sourcing quotes, get at least three from reputable firms. Check reviews, ask for references, and look for membership of a trade body such as the Federation of Master Builders. Always agree on the scope of work, timeline, and materials in writing before anything starts.
Does home insurance cover plaster wall repairs?
It depends on what caused the damage. Home insurance typically covers sudden and accidental damage from an insured event, such as a burst pipe causing water to soak into a wall, or storm damage to the structure of the property. In those cases, replastering affected walls may well be covered as part of the repair.
What home insurance won’t cover is gradual wear and tear, cracks from normal settlement, or damage resulting from poor maintenance. These are considered the homeowner’s responsibility.
If you’re unsure whether your damage qualifies, check your policy wording or contact your insurer before starting any repairs. With Lemonade’s building insurance, damage caused by an insured event is covered, and you can start a claim directly through the app.
Before we go
Plaster wall repairs range from a straightforward DIY fix to a job that needs a professional, depending on the scale of the damage. Get a clear sense of what you’re dealing with, get multiple quotes if hiring someone, and check your home insurance policy if the damage was caused by something sudden and unexpected. Acting sooner rather than later usually keeps costs lower.
Plaster wall repair FAQs
How much does it cost to repair a hole in plaster?
A small hole typically costs between £150 and £300 to repair professionally, depending on size and location. For very small holes, a DIY repair kit costing £20 to £50 is often sufficient if you’re comfortable with basic plastering.
Are plaster wall repairs more expensive in London?
Yes. Labour costs for plasterers in London are typically higher than the rest of the UK, with day rates often exceeding £250. Getting multiple quotes is particularly important in high-cost areas.
Are older plaster walls harder to repair?
Often, yes. Older properties may have lime plaster or lath-and-plaster construction, which requires specialist skills and materials to repair correctly. Standard modern plaster isn’t always compatible, so it’s worth telling any plasterer about the age of the property upfront.
Can you paint over repaired plaster straight away?
No. New plaster needs to dry and cure fully before painting, which typically takes at least two to four weeks depending on the thickness of the application and room conditions. Painting too soon can trap moisture and cause the plaster to fail.
What causes plaster walls to crack?
Common causes include normal settlement of the building, changes in temperature and humidity, poorly mixed or applied plaster, and underlying structural movement. Cracks that appear suddenly, grow quickly, or are accompanied by other signs like sticking doors or uneven floors are worth getting checked by a structural engineer.
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