The short answer
Removing old render and re-rendering typically costs £1,000–£3,000 more than rendering bare or sound walls, so a re-rendered 3-bed semi often lands at £5,000–£10,000+ in 2026. The extra cost covers hacking off the failed render, disposing of the waste, and repairing the exposed wall before the new render goes on. How much the wall needs making good — cracks, blown brick, damp or old patches — is the biggest variable. These are typical illustrations, not quotes — see the full rendering cost guide.
Re-rendering is needed when existing render has blown, cracked, become damp or simply reached the end of its life. It is more involved than rendering a bare wall, because the old finish has to come off first and the wall underneath has to be sound before a new system can be applied. This guide explains what re-rendering involves, why it costs more, and what moves the figure. All figures are typical illustrations rather than quotes, and rendering should be carried out by a trade-accredited rendering specialist.
Remove and re-render at a glance
- Removal & disposal premium add £1,000–£3,000+
- Re-rendered 3-bed semi £5,000–£10,000+
- Removal alone (per m²) £10–£25
- Wall repair & making good variable
- Waste disposal (skip) £200–£500+
- Planning (usually) 0 — like-for-like
Why re-rendering costs more
Rendering a bare, sound wall is a single sequence of preparation and coats. Re-rendering adds two stages on top: removing the existing render and making good the wall it leaves behind. Hacking off render is labour-intensive and creates a lot of waste, which has to be skipped and disposed of. Once the old render is off, the wall is exposed — and any defects it was hiding, such as cracked brick, failed pointing or damp, have to be addressed before new render will bond and last. That repair work is the part most likely to vary between properties.
| Stage | Typical cost | Notes |
|---|---|---|
| Remove old render | £10–£25 per m² | Labour-intensive; varies with how well it’s bonded |
| Waste disposal | £200–£500+ | Skip hire and removal of rubble |
| Wall repair / making good | Variable | Cracks, damp, pointing — the biggest unknown |
| New render system | £40–£70 per m² | As for rendering a sound wall |
When render needs replacing rather than repairing
Not every tired render needs stripping. Sound render with hairline crazing can sometimes be repaired and over-coated, which is far cheaper. But render that has “blown” — lost its bond and sounds hollow when tapped — or that is widely cracked or holding damp, needs removing, because anything applied over it will fail too. A specialist checks the bond and the moisture on a survey and advises whether a repair, a partial re-render or a full strip is the right call. See types of render explained for how different systems weather.
Damp, breathability and older walls
If the old render trapped moisture — common where a cement render was applied to an older, solid wall that needs to breathe — the re-render is a chance to fix the cause, not just the symptom. On period and solid-wall homes a breathable lime render often suits the wall better than cement, letting damp escape rather than trapping it. This is a specialist decision and can affect both the system and the cost. If the re-render is part of adding external wall insulation, Building Regulations apply.
Compare rendering quotes
Re-rendering prices vary most with the condition of the wall underneath. Use our service to compare quotes from trade-accredited rendering specialists in your area.
Frequently asked questions
How much more does it cost to remove old render first?
Removing and disposing of old render and repairing the wall typically adds £1,000–£3,000 or more to a job, so a re-rendered 3-bed semi often lands at £5,000–£10,000+ in 2026. The wall repair is the biggest variable. These are typical illustrations, not quotes.
Can you render over old render?
Only if the existing render is sound and well bonded. Render that has blown, widely cracked or is holding damp must be removed, because anything applied over it will fail too. A specialist checks the bond and moisture on a survey before advising.
How do I know if my render has blown?
Tap the render gently — a hollow sound suggests it has lost its bond with the wall behind. Bulging, widespread cracking, damp patches and crumbling edges are other signs. A rendering specialist can confirm on a survey.
Should old cement render be replaced with lime on an older house?
Often, yes — on period and solid-wall homes a breathable lime render lets moisture escape, whereas a cement render can trap damp and cause problems. It is a specialist decision that depends on the wall, and it can affect both the system and the cost.
Sources & further reading
- Render system manufacturers’ approved-installer schemes — specification and warranties
- Federation of Master Builders (FMB) — finding vetted builders and consumer guidance
- GOV.UK / Building Regulations Approved Document L — thermal standards when external wall insulation is added
- RICS — guidance on home improvements and value
This is general information, not advice for your specific property or job. Costs vary with your home, the condition of the walls and your chosen specialist. Rendering should be carried out by a trade-accredited rendering specialist. We are an independent information and introduction service, not a renderer.