How to Choose a Roof Cleaner and Avoid the Cowboys

You've got moss creeping across your roof and you've finally decided to get it sorted, so you type "roof cleaner near me" and up come a dozen names. Now what? Picking the wrong one can leave you worse off than the moss ever did.

Roof cleaning isn't a licensed trade, which means anyone with a ladder and a pressure washer can call themselves a roof cleaner. In a city like Edinburgh, where a slate tenement roof is expensive and awkward to repair, choosing badly turns into a costly mistake. Here's how to tell the careful firms from the chancers.

The quick answer: A good roof cleaner uses low-pressure soft washing, carries proper insurance, gives you a clear written quote and can talk sensibly about slate and moss, while a cowboy leads with a cheap price, a jet wash and a lot of pressure to book on the spot.

1. Watch how they clean, not just what they charge

The first thing to look at isn't the price, it's the method. Ask any roof cleaner how they plan to clean your roof, and listen for the words soft wash, low pressure and biocide.

A firm that talks about gently lifting the moss and treating it to stop regrowth understands Edinburgh slate. One that just says they'll blast it off should worry you, because that force is what cracks tiles and drives water into a tenement roof that has kept the rain out for a century.

2. Ask about insurance and working at height

Roof work is working at height, and that carries real risk. Anyone you let near your property should hold public liability insurance, and they shouldn't blink when you ask to see it.

Picture the height of an Edinburgh terrace, or the four storeys of a Marchmont or Bruntsfield tenement. If someone falls, or drops a ladder through your neighbour's window, and they're not insured, that becomes your problem. A proper firm sorts this out before they climb anything.

3. A proper quote comes in writing

A trustworthy roof cleaner will look at the job and put a price in writing, spelling out what's included. Vague numbers muttered on the doorstep are a warning sign.

Ask whether the quote covers the moss removal, the gutter clearing and the biocide, or just one of them. On a big shared roof in Stockbridge or the Old Town, knowing exactly what you're paying for saves an argument later, when half the job turns out to be extra.

4. Beware the high-pressure jet wash

Here's the big one. If a roof cleaner's main selling point is a powerful pressure washer, walk away. High pressure looks impressive because you can watch the moss fly off, but it's the quickest way to wreck a roof.

Edinburgh's older slate and the granular coating on 1960s and 70s concrete tiles both suffer under a jet wash. The damage often doesn't show for a season, and then you're paying for slipped slates and leaks that cost far more than the clean ever saved you.

5. Local knowledge tells you a lot

A cleaner who knows the area is usually the safer bet. Edinburgh roofs have their own quirks, from shared tenement pitches to the haar that rolls in off the Forth and keeps everything damp.

Someone who can explain why the north-facing side of your Leith flat grows more moss, or why the chimney flashing on a New Town roof needs care, has clearly done this locally before. A blank look when you mention slate should tell you plenty.

6. Reviews, references and a real address

Last of all, check they're real. Look for reviews from around Edinburgh, ask for a couple of references, and make sure there's a proper phone number and address behind the business.

A firm that's worked across the city for years, like ours with over 15 years of experience, has a reputation to protect. A cowboy who's here today and gone tomorrow doesn't, which is exactly why the cheap doorstep deal so often ends badly.

• Method matters: soft washing and biocide beat brute force every time on Edinburgh slate.
• Insurance: never let an uninsured crew work at height on your property.
• Written quote: get the moss removal, gutters and treatment spelled out on paper.
• No jet wash: a pressure washer as the main selling point is a reason to walk away.
• Local reputation: reviews, references and a real address separate the pros from the chancers.

Frequently Asked Questions

Is roof cleaning a regulated trade?
No, it isn't, which is exactly why care is needed. Anyone can set up as a roof cleaner overnight, so you're relying on their method, insurance and track record rather than a licence.

How do I check a roof cleaner's insurance?
Just ask to see their public liability certificate. A genuine firm will show it without fuss, and you can ring the insurer named on it if you want to be certain.

Why is a very cheap quote a warning sign?
Because proper roof cleaning takes time, skill and safe access. A price that seems too good usually means corners get cut, often a quick jet wash that damages the roof.

Should I pay before the work is done?
Avoid paying the full amount up front. A reputable cleaner is happy to be paid on completion once you've seen the job, which protects you if they never come back.

How do I know if a firm is genuinely local?
Ask about specific Edinburgh areas and roof types. A local crew will talk easily about tenement slate, Leith flats or New Town chimneys, rather than giving a generic answer.

Want a roof cleaner you can actually trust?
Ben's Roof Cleaning carries out careful soft washing, moss removal and gutter cleaning across Edinburgh and Scotland, with over 15 years of experience. Get in touch or call 0131 202 2140 for a free, no-obligation quote.

Choose Care Over the Cheapest Ladder

The right roof cleaner for your Edinburgh home is rarely the cheapest name on the list. It's the one who talks about protecting your slate, shows you their insurance and puts everything in writing. Spend five minutes asking the right questions and you'll dodge the cowboys who cost homeowners a fortune every single year.