- Render & K-Rend Cleaning - Bournemouth & Dorset
Render & K-Rend Cleaning
Bournemouth
Bournemouth
Is your render green, stained or streaked? We restore K-Rend, monocouche, pebbledash and sand-cement render across Bournemouth using professional soft wash the only safe method that removes algae without damaging the render surface. Results last 3-5 years. Fully insured. Free quotes.
Fully Insured
Public liability cover
K-Rend Safe Method
Never pressure washed
3-5 Year Results
Biocide kills at root
Bournemouth Based
Genuinely local team
SOFT WASH RENDER CLEANING
(
Safe for K-Rend)
BOURNEMOUTH
Safe for K-Rend)
BOURNEMOUTH- RENDER & K-REND CLEANING BOURNEMOUTH
We Clean Green, Stained & Streaked Render - Without Damaging It
Bournemouth Roof Cleaning specialises in professional render and K-Rend cleaning across Bournemouth, Poole, Christchurch and Dorset. We use a professional soft wash biocide treatment the only safe cleaning method for K-Rend, monocouche and all thin-coat render systems. No pressure washing, no surface damage, no voided warranties.
Green algae, black streaks and lichen on render are caused by biological growth embedded in the render surface. Rinsing with water or pressure washing removes the visible growth temporarily but leaves spores in the render which return within months. Our biocide kills the growth at the root, delivering results that last 3-5 years from a single treatment.
- K-Rend, monocouche, pebbledash and sand-cement render
- Soft wash only - never pressure washed. Zero surface damage.
- Biodegradable biocide kills algae at the root - not just the surface
- Results last 3-5 years from a single treatment
- Does not void K-Rend manufacturer warranty
- Fully insured. 12-month written guarantee. Free quotes.
Why You Must Never Pressure Wash K-Rend or Monocouche Render
K-Rend, Weber, Parex and other thin-coat render systems have a surface aggregate depth of only 1.5-2mm. High-pressure washing strips this aggregate layer permanently damaging the finish, exposing the base coat beneath and voiding the manufacturer warranty. Several Bournemouth homeowners contact us every year to clean render after a previous company pressure washed it incorrectly. Soft wash is the only appropriate method and the only one we use.
- THE SAFE ALTERNATIVE
What We Use Instead - Soft Wash Biocide Treatment
Our soft wash method uses very low pressure and a professional biocide cleaning solution cleaning the render surface completely and killing biological growth at the root without any surface abrasion or damage.
💧
Very Low Pressure
10-40 bar versus 200+ bar for pressure washing. Safe for all render finishes without any surface abrasion.
🌿
Biodegradable Biocide
COSHH-compliant solution kills algae, moss and lichen at the biological root preventing rapid regrowth. Eco-safe once dry.
📋
Warranty Safe
Our method does not void any K-Rend, Weber or Parex manufacturer warranty. Written confirmation available on request.
- RENDER TYPES WE CLEAN
Every Render Type Across Bournemouth & Dorset
Different render systems need different cleaning approaches. We identify your render type before quoting ensuring the correct biocide concentration and method every time.
K-Rend
The most requested render cleaning service in Bournemouth. K-Rend is a silicone thin-coat render system that must only be cleaned by soft wash. We remove green algae, black streaks and biological staining without touching the aggregate surface layer.
Monocouche Render
Weber, Parex and other monocouche single-coat systems cleaned safely using soft wash biocide. Like K-Rend, these systems are extremely susceptible to pressure washing damage our low-pressure method is the only appropriate approach.
Sand-Cement Render
Traditional sand-cement render on older Bournemouth homes handles soft wash cleaning well. Algae, lichen and atmospheric staining removed effectively. Soft wash also extends the life of the render by removing the biological growth that accelerates surface erosion.
Pebbledash
Pebbledash is common on Bournemouth’s 1930s-60s housing stock. The textured aggregate surface traps biological growth more readily than smooth renders. Soft wash biocide penetrates between the pebble aggregate to kill algae and lichen at the base.
Tyrolean / Roughcast
Tyrolean and roughcast renders have deep textured profiles that harbour significant biological growth. Soft wash biocide works particularly well on these surfaces penetrating the texture to kill growth that a surface-level rinse would never reach.
Painted Render
Painted render and masonry painted walls require very low-pressure soft wash to avoid paint lifting or damage. We clean green algae and black staining from painted exterior walls safely restoring original colour without paint stripping or surface abrasion.
- OUR WORK
Before & After - Soft Washing in Bournemouth
- OUR PROCESS
How We Clean Your Render - Step by Step
Every render cleaning job in Bournemouth follows the same professional process same quality, same care, every time.
Assessment & Written Quote
We identify render type, coverage, access and algae severity. Fixed written price confirmed before any work starts.
1
Surface Preparation
Window frames, doors and plants protected before treatment. Soft wash rig set up at low pressure, calibrated for your specific render type.
2
Biocide Application & Dwell
Biodegradable biocide applied across all render surfaces at very low pressure dwell time kills biological growth at the cellular root. This is the stage that delivers 3-5 year results.
3
Low-Pressure Rinse & Inspect
Final rinse removes dead biological matter. Full inspection completed. Residual biocide continues protecting the render surface for months.
4
- WHAT'S INCLUDED
Everything Included - No Hidden Extras
1
Free Render Assessment & Written Quote
We identify your specific render system and assess biological coverage before providing a free, fixed written quote no verbal estimates, no day-of changes.
2
Window & Door Frame Protection
All window frames, doors, sills and garden plants protected before treatment begins. Zero collateral damage to surrounding surfaces from cleaning solutions.
3
Full Surface Biocide Treatment
Biodegradable COSHH-compliant biocide applied to all affected render surfaces at calibrated low pressure every wall, every elevation, every area of visible biological growth.
4
Low-Pressure Rinse - Zero Surface Damage
Final soft wash rinse removes dead biological matter. Never high-pressure. No surface abrasion. No aggregate erosion. No paint stripping.
5
Residual Biocide Protection
Biocide continues working in the render surface after the clean preventing rapid biological regrowth and maintaining the clean appearance for 3–5 years.
6
Free Assessment & Fixed Written Quote
We assess surface type, biological coverage and access. Fixed written price confirmed before any work starts no verbal estimates, no day-of changes.
12-Month Written Guarantee
Every render cleaning job in Bournemouth backed by a written 12-month guarantee. If significant biological regrowth returns within 12 months, we return and re-treat at zero cost.
Combine & Save 15%
- Roof soft wash - render + roof same visit
- Gutter cleaning - SkyVac Pro
- Window cleaning - pure water finish
- Driveway cleaning - full exterior package
- Fascia & soffit - complete roofline
15%
Combined service discount on every booking
- PRICING GUIDE
How Much Does Render Cleaning Cost in Bournemouth?
Guide prices below always confirmed in a free written quote before any work starts. Final price depends on property size, render type and biological coverage.
Terraced / Small Semi
£300
from
2-3 bed terraced or small semi in Bournemouth. Front and rear render soft washed. 12-month guarantee included.
Standard Semi-Detached
£450
from
3-4 bed semi most common Bournemouth property type. All elevations cleaned. Most popular render cleaning package.
Detached / Large Property
£650
from
Larger detached homes, 4+ beds or significant algae coverage. Free site visit for exact price. Written quote before work.
All prices are starting guides. Free written quote always confirmed the price you receive is fixed. No day-of changes.
Property Size
More wall surface area means more biocide solution and time.
Algae Severity
Heavy biological coverage needs higher concentration and longer dwell time.
Render Type
K-Rend and monocouche require more care than sand-cement render.
Access Requirements
Multi-storey or complex access may require scaffold tower or extended poles.
Roof Add-On
Roof and render soft washed in same visit 15% combined discount.
Number of Elevations
Front only, front + rear, or all four elevations affects final cost.
- WHY TRUST US
Bournemouth's Trusted Render & K-Rend Cleaning Specialists
Fully Insured
Public liability on every job. Documentation provided before work starts.
COSHH Certified
All biocide treatments applied by certified operatives with current training records.
Bournemouth Based
Local team same people who answer your call complete the work.
200+ Reviews
Verified five-star Google reviews from real Bournemouth homeowners. Read before booking.
- FREQUENTLY ASKED QUESTIONS
Render & K-Rend Cleaning FAQs
Can you pressure wash K-Rend render?
No , you should never pressure wash K-Rend or any thin-coat render system. K-Rend has a surface aggregate layer of only 1.5-2mm depth. High-pressure washing strips this aggregate layer, permanently damaging the textured finish, exposing the base coat beneath and voiding the manufacturer warranty. The only appropriate cleaning method for K-Rend is soft washing very low pressure combined with a biodegradable biocide solution. This is the method we use on every K-Rend property across Bournemouth and Dorset.
How long does render cleaning last?
With professional soft wash biocide treatment, render cleaning results typically last 3-5 years before significant biological regrowth requires retreatment. The biocide continues working in the render surface for months after the clean killing algae spores and slowing regrowth significantly. North-facing walls, shaded elevations and coastal properties in Bournemouth may need retreating sooner than 3 years. Every job includes a written 12-month guarantee against significant regrowth.
Does soft washing damage render?
No , soft washing is specifically designed to be safe for all render types. The water pressure used in professional soft washing is 10-40 bar a fraction of the 100-350 bar used in pressure washing. This is insufficient to cause any mechanical damage to render surfaces, including delicate K-Rend and monocouche finishes. The biocide solution is also chemically safe for all render types it is specifically formulated to kill biological growth without reacting with cement, silicone or mineral render binders. We have never damaged a render surface in 15+ years of cleaning.
How often should render be cleaned in Bournemouth?
With biocide treatment, most Bournemouth properties need render cleaning every 3-5 years. Bournemouth’s damp coastal climate and above-average rainfall mean biological growth rates are higher than most UK inland areas so locally we recommend being proactive rather than waiting for heavy coverage to develop. North-facing walls, properties near the coast and those with significant nearby tree cover may need cleaning every 2-3 years. Annual inspection is recommended to identify early growth before it becomes established.
How much does render cleaning cost in Bournemouth?
Render cleaning in Bournemouth starts from £300 for a small terraced house, £450 for a standard semi-detached and £650+ for larger detached homes. The final price depends on property size, render type, number of elevations cleaned and severity of algae or biological coverage. We always provide a written quote before any work begins. The price quoted is fixed no day-of changes.
What causes green algae on render?
Green algae on render is caused by airborne algae spores that settle on the render surface and colonise it feeding on moisture and atmospheric nutrients. In Bournemouth specifically, the combination of high annual rainfall, above-average humidity from the coastal location, and the shade provided by neighbouring properties and trees creates ideal algae growth conditions. North and west-facing walls in Bournemouth are most susceptible, as they receive less drying sunlight. Without biocide treatment, algae returns within months of any surface cleaning.
How do you remove black streaks from render?
Black streaks on render are caused by algae and black mould (cyanobacteria) running down the wall surface from gutters, window ledges and roof overhangs. They are biological in nature and respond well to professional biocide soft wash treatment. The biocide penetrates the render surface and kills the biological growth at the root removing the black staining and preventing it from returning rapidly. A surface rinse alone will not remove embedded black streaks; the biocide treatment is essential. Results are typically visible within days of treatment as the dead biological matter dries and lightens.
Can you clean render without removing paint or colour?
Yes , soft wash biocide treatment removes biological growth without affecting the colour or finish of the render beneath. For coloured K-Rend and monocouche, the biocide treatment cleans the surface while preserving the pigmented aggregate layer. For painted render, very low pressure ensures no paint lifting or stripping. Our method is specifically calibrated to deliver maximum biological cleaning with zero cosmetic damage to the render finish. We always identify the render type before beginning and adjust our method accordingly.
- AREAS WE COVER
Render & K-Rend Cleaning Across Bournemouth & Dorset
Searching for render cleaning near me, K-Rend cleaning in my area or a wall and render cleaning company in Bournemouth? We cover all locations below.
Also covering Muscliff, Throop, Tuckton, Iford, Holdenhurst, Bearwood, Bransgore and all surrounding Dorset postcodes. Not listed? Call us , we most likely cover your area.
Ready to Restore Your Render in Bournemouth?
Free no-obligation quotes across Bournemouth, Poole, Christchurch and all of Dorset. K-Rend and all render types. Soft wash only zero surface damage. 12-month written guarantee. We respond within 2 hours.