Exterior cleaning guides
Straight answers to the questions homeowners ask most often — what causes the problem, what can be cleaned off, which method suits the surface, and when a repair is the honest answer instead.
K-Rend & render
6 guidesWhat causes staining on rendered walls, what cleans off, and what needs a repair instead.
- K-Rend & render
Can K-Rend be pressure washed?
The short answer is no — and the damage it leaves cannot be cleaned out afterwards.
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How to clean green algae from K-Rend
Why rendered walls go green, and the low-pressure method that removes it properly.
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How to remove black staining from render
Black streaking has several causes — and not all of them are a cleaning problem.
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K-Rend cleaning vs repainting
Cleaning suits sound through-coloured render; painting suits walls that are already painted or patched.
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How long does K-Rend cleaning last?
It depends far more on the elevation than on the clean itself.
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How to clean coloured render safely
Through-coloured, painted and sand-cement render each need a different approach.
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Roofs & moss
5 guidesMoss, tiles and roof cleaning methods — including where cleaning is the wrong answer.
- Roofs & moss
Does moss damage roof tiles?
Moss holds moisture and blocks gutters — but careless removal damages more roofs than moss does.
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Can roof tiles be pressure washed?
Sometimes — but on many coverings it removes surface, water and tiles you cannot put back.
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Roof cleaning vs roof moss removal
One deals with the whole roof surface; the other targets heavy growth. Often you need both.
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How long does roof cleaning last?
Longer on an open, sunny pitch than a shaded one under trees — position decides most of it.
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How do you stop moss coming back on a roof?
Cleaning deals with today's moss. Whether it returns quickly depends on conditions — some of which can be improved.
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Gutters & rainwater
3 guidesBlockages, overflow, damp and how often gutters actually need clearing.
- Gutters & rainwater
How often should gutters be cleaned?
Once a year suits most houses; trees or roof moss can mean twice.
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How do you know if your gutters are blocked?
Overflow during rain, silent downpipes and a green stripe down the wall are the usual giveaways.
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Can blocked gutters cause damp?
Yes — a wall soaked repeatedly from above is one of the most common causes of internal damp.
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Windows
2 guidesFrequency, methods and what a professional window clean covers.
- Windows
How often should windows be cleaned?
Coastal exposure, roads and trees decide it — not a fixed rule that suits every house.
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Water-fed pole vs traditional window cleaning
Purified water from the ground reaches height safely; traditional work still suits some jobs.
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Methods & pricing
3 guidesSoft washing, pressure washing and what makes one exterior clean cost more than another.
- Methods & pricing
What is soft washing?
Low-pressure cleaning that treats organic growth instead of blasting surfaces.
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Soft washing vs pressure washing
Force suits hard ground surfaces; delicate finishes and living growth need treatment instead.
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What affects the price of exterior cleaning?
Size, access, height, surface and condition — the things a quick photograph usually shows.
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All exterior cleaning services · K-Rend cleaning & soft washing · Get a quote
Not sure what your property needs?
Send a photograph of the worst area and Rob will tell you whether it is a cleaning job or something else.