Illustrative comparison; not a verified customer job.Indicative UK Render Cleaning Prices
| Job type | Illustrative range |
|---|---|
| Small gable end | £250–£350 |
| Semi-detached house | £400–£550 |
| Detached house | £600–£900 |
| Biocide-only treatment | £150–£250 |
Budgeting guidance only. Real prices depend on render condition, access and contractor assessment.
Example K Rend cleaning prices
A small accessible gable might be budgeted at £250–£350, a typical semi-detached home at £400–£550, and a detached house at £600–£900. Biocide-only treatment, where suitable, may be around £150–£250. These are illustrative starting points and can vary materially by region, finish and contamination.
What affects the final cost?
The biggest variables are access, condition and how much of the building actually needs treatment. A single low-level face may be straightforward; a high gable above a lean-to or conservatory is not.
- Rendered surface area, texture and colour
- Scaffolding, powered access or difficult slopes
- Severity and type of algae, black spotting or lichen
- Nearby plants, fragile materials, drains and run-off controls
- Whether an inspection, test patch or follow-up visit is needed
What should a quote include?
Ask whether preparation, protection of plants, a suitable trial area, cleaning, rinsing where required, and appropriate biocide treatment are included. The contractor should specify the actual surface finish and their intended method.
- A scope covering the walls and square metres where possible
- The proposed cleaning method and any treatment
- Access costs, waste/run-off controls and VAT if applicable
- Written details of exclusions, expectations and warranties
How can I compare like for like?
Upload two wide views of each wall and at least one close-up of the staining. State if you have silicone K Rend, monocouche or painted render, and tell the cleaner about any cracks or loose patches. Compare the scope as well as the headline price.
Helpful answers from manufacturer and UK industry guidance
Short answers with links to check the supporting guidance.
What does K Rend cleaning cost per square metre?
A published August 2026 UK cost guide gives a typical render soft-wash rate of about £6.50 per square metre, with a broad range of £5–£8 for standard work. Small jobs may have a minimum call-out charge and higher walls may need access equipment. Use a measured quotation rather than multiplying every wall by one rate.
Why can two K Rend cleaning quotes be so different?
Two walls of similar size can need very different work. Access, the height of the elevation, the amount and type of growth, whether a test patch is needed, and the chosen treatment all affect labour and equipment. Ask each contractor to confirm what areas and treatments the written quote actually includes.
Does a render cleaning price include biocide treatment?
Not always. Some quotations cover a gentle clean only, while others include an algae-specific product and aftercare. Ask what will be applied, whether it is suitable for the particular render, how surrounding surfaces will be protected and whether any follow-up treatment is separately charged.
Frequently Asked Questions
What is a typical price to clean one K Rend gable?
An indicative planning figure is £250–£350 for a small, accessible gable. Real prices vary with size, height, condition and access.
Is cleaning a detached property always £600–£900?
No. That is only a suggested planning range. Large elevations, access equipment and unusual contamination can make the actual quote higher or lower.
Are biocides included?
Not necessarily. Ask for the method and any biocide treatment to be listed clearly in the quote.