If you live in Bristol, you’ll know how quickly roofs can start to look tired. After only a few year they’re covered in moss, algae, and all sorts of green build-up. The damp climate in our country encourages this growth — but it should not be ignored.
We get asked this all the time at Leeksons Exterior Cleaning: what’s actually the best way to clean a roof? And honestly, it’s not what most people expect.
Why Roofs in Bristol Get So Bad
Bristol’s weather plays a big part in it. With plenty of rain and not always enough direct sun, moisture tends to hang around. That creates the perfect conditions for moss to grow — and once it starts, it spreads fast.
The problem is, moss doesn’t just sit on the surface. It holds moisture against your tiles, which over time can lead to damage, blocked gutters, and even leaks if it’s left long enough.
The Big Mistake: Pressure Washing 🚫
A lot of people assume pressure washing is the best option. After all, it works well for patios.
The reality is, pressure washing can do more harm than good. We’ve seen it plenty of times — cracked tiles, water pushed underneath the roof and a lot of mess to clean up. It might look clean straight after, but it can cause problems later on.
That’s why we don’t recommend it as a go-to solution.
So, What Is the Best Way? ✅
In our experience, the safest and most effective method is using the Marshall Air System.
Instead of using water at high pressure, it uses controlled airflow to remove moss and debris. It’s a much gentler process, but still incredibly effective.
Why We Use the Marshall Air System
There’s a few reasons we rate it so highly:
- It doesn’t damage your roof – no harsh pressure, no cracked tiles
- It gets rid of heavy moss properly – even the stubborn stuff
- It’s suitable for all kinds of roofs – slate, tile, clay, you name it
- It’s cleaner and more controlled – less mess around your property
Once the moss is removed, we also apply a biocide treatment to help stop it coming back too quickly — which makes a big difference long term.
Our Approach at Leeksons
We’re not about quick, cheap fixes. Every roof is different, so we take the time to do things properly and safely.
Using the Marshall Air System means we can clean roofs across Bristol without risking damage — and that’s the main thing for us. It’s your home at the end of the day.
If your roof’s starting to look green or clogged up with moss, it’s definitely worth sorting sooner rather than later.
The best way to clean a roof in Bristol isn’t blasting it with pressure — it’s using the right method that actually protects it. For us, that’s the Marshall Air System every time.
If you’re unsure about the condition of your roof or just want some honest advice, feel free to get in touch. We’re always happy to help.
