Free tool · from The Render Softwash Works
Render softwash prices, by the house.
Render softwashing priced the way the trade prices it: a job price by house size, with heavy growth and awkward access as add-ons, and the exterior stack that lifts the ticket.
How it prices: A job price by house size, with a flat add for heavy or established algae (a second biocide pass) and for awkward access. Booking gutters and fascias together saves on the bundle, and a roof softwash can be added while the kit is set up. A three-storey job needing scaffold is a survey, not an instant price. Manual bands: terraced £200–£400, semi £350–£600, detached £500–£1,000+. Treat the output as a starting band, not gospel — gather 15–30 local price points before you commit to a number.
What render softwashing costs in the UK in 2026
Render softwash is priced per job by house size: a terraced house is typically £200–£400, a semi-detached £350–£600 and a detached house £500–£1,000+. Heavy or established algae adds £50–£150 for a second biocide pass, and awkward access (ladder or tower) £75–£150. A three-storey job needing scaffold is a survey, not an instant price.
Softwashing kills the algae at the root with a low-pressure biocide rather than blasting the render — pressure washing render is how you strip it.
If you're the one on the softwash lance
The average ticket climbs by stacking the exterior: gutters (£80–£200), fascias and soffits (£100–£250) and the roof (£250–£600) all get done while the kit is set up, with £40–£60 off for booking them together. The high-ticket option is a full render recolour at £1,500–£4,000+, sold honestly and rarely.
The full method — pricing by size, the access rules, the exterior add-on stack, recolours — is in The Render Softwash Works, £47.
Pricing questions, answered plainly
How much does render softwashing cost in the UK?
By house size: a terraced house is £200–£400, a semi £350–£600 and a detached house £500–£1,000+. Heavy algae and awkward access add to that; scaffold jobs are quoted after a survey.
Is softwashing better than pressure washing render?
For render, yes — a low-pressure biocide kills the algae at the root without damaging the surface, whereas pressure washing can strip and crack render.
How long does a render softwash last?
The biocide keeps working for weeks after the visit and typically holds for two to three years before a re-treatment, depending on shade and exposure — it isn't a permanent guarantee.
Why does a three-storey render job cost more?
Because safe access at height needs a tower or scaffold, which is hired in and passed through at cost — a genuine three-storey job is often £1,500–£2,500 once access is included.
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