Shade & moisture
North-facing walls and long damp periods can favour algae growth.
UK-WIDE RENDER CLEANING QUOTES
Professional K Rend & Render Cleaning Across The UK
Green algae on your render? Request a free quote for gentle, surface-appropriate cleaning. We help connect homeowners with independent specialists.
Low-pressure methods
Render-specific assessment
No-obligation enquiries
BeforeAfter↔
Illustration only — not a verified local cleaning job.
✦
Gentle on the finishMethod chosen to suit the render
100UK town quote pages
K RendSilicone & monocouche
Low pressureInspection-led approach
FreeHomeowner enquiries
THE BASICS
What is K Rend Cleaning?
K Rend is a recognised render brand that includes silicone-based, water-repellent finishes. The surface can attract grime, algae and other deposits, especially where walls stay shaded or damp.
Professional cleaning starts by identifying the wall finish, checking its condition and deciding whether a gentle rinse, low-pressure soft wash or suitable algae treatment is appropriate.
Read our K Rend cleaning guide →Not ordinary jet washing
A high-power concentrated jet can damage render. Suitable finishes may allow gentle low-power fan washing, but follow the manufacturer's guidance.
Compare the methods →WHAT CAUSES THE MARKS?
Why Render Turns Green
Green render is often a sign of biological growth on damp surfaces. Shade, moisture and poor drainage can all play a part.
Gutters & leaks
Recurring streaks beneath rainwater fittings may signal a drainage issue.
Surface growth
Green, black and red marks need identifying before treatment.
OUR APPROACH TO QUOTING
Our Soft Wash Method
We encourage an inspection-led approach, not a one-size-fits-all blast. The independent provider chooses a method suitable for the finish.
01
Inspect the surface
Identify K Rend, silicone, monocouche or another finish; look for cracks and leaks.
02
Protect & test
Check planting, drainage, weather and a discreet test patch.
03
Clean carefully
Use an appropriate low-pressure treatment or gentle fan rinse where permitted.
04
Algae aftercare
Where suitable, use label-compliant biocide and discuss maintenance.
CLEARER COSTS
How Much Does K Rend Cleaning Cost?
These illustrative UK ranges help you budget before a contractor prices your property.
✓ Height and access affect the price
✓ Method depends on the finish
✓ Photographs help quotes
| 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.
RENDER CLEANING QUESTIONS
Straight Answers to Common K Rend Cleaning Questions
Practical UK homeowner answers checked against manufacturer guidance and published cost data.
How much does K Rend cleaning cost in the UK?
The price depends mainly on the area to clean, wall height, access, contamination and render condition. Our illustrative small-gable budget is £250–£350, but UK industry figures put terrace or semi-detached render soft washing around £300–£600 and detached properties around £600–£1,100. A photo-based contractor assessment is needed for an actual price.
Can K Rend be pressure washed?
K Rend allows careful washing with clean water, a little mild detergent and a gentle fan setting; it specifically warns against very high pressure, which may damage the surface. That is why contractors should inspect the finish first rather than use a powerful jet automatically.
Why is white K Rend turning green?
Green discolouration is often algae growing where the wall remains damp, particularly on shaded elevations or beside trees. K Rend says naturally occurring algae can affect the appearance of render without necessarily affecting its long-term performance. A suitable algae treatment and attention to moisture sources may help.
Does stained K Rend need repainting?
Not automatically. K Rend explains that tired, dirty render may only need a gentle wash to improve its appearance. Painting or repairs may be worth assessing if the finish is failing, stained beneath the surface, cracked or otherwise defective; cleaning alone cannot correct those issues.
START LOCAL
Areas We Cover
Browse town-specific guidance and enquire about contractor availability. Listed areas are not physical branches.
HOMEOWNER CONFIDENCE
Real Reviews, Once Verified
Genuine reviews, real job photos and any written warranties can appear here once independently checked. We do not invent ratings or past project claims.
✧ ✧ ✧ ✧ ✧
Verified reviews
Space for real homeowner feedback after permission.
▧
Real project photos
Space for authentic before-and-after work.
✓
Written warranty terms
Only guarantees confirmed by the appointed provider.
GET STARTED
Bring your render back to its best.
Tell us where the property is and what the wall looks like. We’ll use your details for this enquiry and potential introduction to a suitable independent cleaner, subject to availability.
✓ Photos welcomed✓ All UK postcodes can enquire✓ No obligation to book
Any workmanship guarantee must come from the independent provider in writing.
NO-OBLIGATION ENQUIRY
Get your free render cleaning quote
Tell us about your wall. A photo can help an independent specialist assess the job.
HELPFUL ANSWERS
Frequently Asked Questions
Can K Rend be cleaned without high pressure?
Yes. Suitable render can often be cleaned with a manufacturer-compatible gentle wash or specialist soft-wash treatment. The operator should identify the finish and inspect for cracks first.
How much does K Rend cleaning cost?
Illustrative ranges are £250–£350 for a small gable, £400–£550 for a semi-detached home, and £600–£900 for a detached house. A contractor must confirm the price after checking photos and access.
Is a biocide always needed?
No. Treatment depends on the type of staining and surface. Where algae is present, a suitably approved biocide may help treat growth when used according to its instructions.
Do you carry out the work yourself?
Render Cleaning UK is a quote introduction service. With your permission, we can share the enquiry with an available independent specialist in your area.
Do you guarantee a particular finish or ten years without algae?
No blanket ten-year guarantee is advertised. Results, warranties and future regrowth depend on the wall and the independent contractor’s written terms.