Plymouth's Conservatory Roof Specialists
Render Cleaning & Softwashing Plymouth
Southside Better Roofs offers render cleaning, render softwashing and general exterior cleaning across Plymouth, the South Hams and east Cornwall. We use low pressure and the right cleaning solution for your surface, and every job starts with a free, fixed written quote.
- Warm in winter, cool in summer
- No more leaks or condensation
- Fully insulated tiled roof systems
No pushy sales · Same-day reply · 10-year insurance-backed guarantee
A simple, considered approach.
Why render goes green and black
Damp sea air and shaded walls let algae, lichen and mould settle on render, especially on north-facing elevations. The staining spreads year on year and makes a well-kept home look tired.
Common problems we clean: green algae on render, black stains and mould, red stains, lichen spots and generally dirty render or green walls.
Render types we clean
- K Rend cleaning and softwashing — low pressure to protect the through-coloured finish.
- Silicone render cleaning — gentle treatment that keeps the water-repellent surface intact.
- Monocouche render cleaning — softwash rather than jet wash.
- Painted and coloured render cleaning — cleaned without stripping the paint or fading the colour.
Why most older conservatory roofs stop working.
Almost every project we visit starts with the same set of complaints.
Too hot in summer
Glass and polycarbonate roofs trap solar heat and make the room unusable.
Too cold in winter
Poor insulation lets warmth escape and pushes up your heating bills.
Leaks & condensation
Aging seals and single-skin roofs let damp in and cause recurring leaks.
Loud during rain
Thin roof materials amplify noise so the room never feels settled.
Render softwashing — gentle exterior cleaning
High-pressure jet washing can scar render, strip paint and force water into cracks. Softwashing uses low pressure with a cleaning solution that kills growth at the root, then rinses it away. The surface comes up clean without being blasted, and the treatment keeps working after we leave.
A complete insulated warm-roof system.
Engineered to building-reg standards and finished beautifully inside and out.
Exterior softwashing beyond render
The same low-pressure approach works on walls, fascias, soffits and other exterior surfaces. Many customers combine it with roof cleaning, gutter cleaning or conservatory cleaning so the whole outside of the house is done in one visit.
Four clear steps from first visit to finished room.
Survey
We visit, measure and discuss exactly how you want to use the room.
Specify
A clear written quote — materials, finish and timeline up front.
Install
Old roof off, fully insulated warm-roof system on, by our own crew.
Finish
Plastered ceiling, full clean-down and walk-through with you.
A conservatory you actually want to spend time in.
Cool in summer
No more trapped heat — the room stays comfortable on the hottest days.
Warm in winter
Insulated to modern building-reg standards so you keep the heat in.
10 year guarantee
Insurance-backed guarantee, plus a 40-year guarantee on the tiles.
Fast install
Most projects are completed in just 2–4 days by our own crew.
Why choose us
- Local team — based at the Barbican in Plymouth.
- Method matched to your surface — low pressure where it matters.
- Free, fixed written quote — agreed before any work begins.
Why our warm roof outperforms a traditional conservatory.
Frequently asked questions.
Do you offer render cleaning in Plymouth?+
Yes. We clean and softwash render and other exterior surfaces across Plymouth, the South Hams and east Cornwall. Every job gets a free, fixed written quote.
What is render softwashing?+
Softwashing applies a cleaning solution at low pressure to kill algae, lichen and black or green staining, then rinses it away gently. It cleans render without blasting the surface the way a high-pressure jet can.
Can you clean painted, K Rend or silicone render?+
We look at the render type and condition first and choose a method to suit it. Low-pressure softwashing is usually the safest choice for modern through-coloured and silicone renders.
Why is my render turning green?+
Green render is algae growing on damp walls, most often on north-facing or shaded sides and near the sea. Black stains are usually mould or lichen, and red or orange stains are often a type of algae too. Softwashing kills the growth rather than just rinsing the surface.
Can you pressure wash render or K Rend?+
We don't use high pressure on render. It can damage the surface, strip paint and force water into cracks, and it can harm through-coloured renders like K Rend and silicone render. Low-pressure softwashing is the safer way to clean them.
How long does softwashing last?+
Softwashing kills the growth at the root, so walls stay clean for longer than after a rinse alone. How long depends on shade and exposure; we'll tell you what to expect for your walls when we quote.
What other exterior surfaces do you clean?+
As well as render we clean walls, fascias, soffits and other exterior surfaces. Tell us what you need cleaned and we'll include it in your quote.
How much does render cleaning cost?+
We give free quotes only. The price depends on the size of the walls, access, the render type and how stained it is, and is agreed in writing before work starts.
Got questions?
Straight answers to the things people ask us most.
Get your free quote
Tell us a little about your conservatory and we'll come back to you within 48 hours. No pushy sales, no obligation.
Free Brochure
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Everything you need to know about our SupaLite™ insulated warm-roof system — tile finishes, internal options, the 2–4 day installation process, prices from £6,000 fully fitted, and our 10-year insurance-backed guarantee.
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