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Decking Cleaning & Restoration

Decking cleaning across Prescot, Knowsley and St Helens. Green, slippery timber and composite boards cleaned with the right method for the material, grooves cleared out, left ready for oiling.

What we clean

Blastaway Pressure Washing Services cleans timber and composite decking across Prescot, Whiston, Rainhill, St Helens and the south Liverpool suburbs. Softwood, hardwood or composite, raised decks or low platforms, steps and handrails included. If the boards have gone green, gone grey or gone slippery underfoot, we can bring them back.

Most decked gardens round here see little sun through winter, and the damp air off the Mersey keeps timber wet for weeks at a time. That is exactly the environment algae likes, which is why so many decks in Merseyside are green by February and stay that way until somebody cleans them.

How we clean decking

Timber and composite need different handling, so the job starts with working out what the deck is made of and what condition it is in.

On sound timber we apply a cleaning solution that breaks down the algae and any mould sitting in the grain, then wash the boards with low, controlled pressure, working along the grain rather than across it. Older or softer boards get a gentler soft wash instead, because a hard jet on tired timber roughs up the surface and there is no undoing that.

Composite boards get a soft wash only. They do not need pressure and most manufacturers advise against it, so we lift the grime with the right solution and a thorough rinse.

The gaps and grooves get cleared out too, not just the tops of the boards. That is where wet leaves and muck collect, and it is where the slippery film starts.

After the clean

A freshly cleaned timber deck is the ideal base for a coat of oil. Once the boards have dried properly the oil soaks in evenly, the colour comes back and the timber gets some protection against the next Merseyside winter. Ask when you get in touch and we will price the oiling alongside the clean, or leave the deck bare for you to finish yourself.

Get a free quote

Get in touch through the contact form or on WhatsApp and tell us roughly how big it is. We will give you a free quote with a fixed price agreed before any work starts. We cover Prescot, Knowsley, St Helens, east and south Liverpool, Widnes and everywhere in between.

After a price for decking cleaning?

Every job is priced on what is actually there. Get in touch with your postcode and we’ll come back with a free quote, agreed before we start.

Decking cleaning FAQ

Straight answers to the things people ask us about decking cleaning around Prescot and Merseyside.

How much does decking cleaning cost in Prescot?

It depends on the size of the deck, whether the boards are timber or composite, and how heavy the growth is. A small platform by the back door is a different job to a full-width raised deck that hasn’t been touched in five years, so we don’t work off a set price list.

Do you clean decking near me?

We’re based in Prescot and cover Knowsley, St Helens, east and south Liverpool, Widnes and most places within roughly 15 miles. If you’re searching for decking cleaning near me anywhere across that patch, send us your postcode and we’ll confirm we cover you.

Can composite decking be pressure washed?

Best not to. Most composite manufacturers warn against high pressure because it can scar the surface of the boards. We soft wash composite decking instead: the right cleaning solution, low pressure and a thorough rinse gets it clean without any of that risk.

Will pressure washing damage timber decking?

It can, in the wrong hands. Blast soft timber at close range and the surface splinters and roughens, and there’s no fixing that afterwards. We work at low pressure with the lance kept moving, and on older or softer boards we switch to a soft wash, so the wood gets cleaned rather than stripped.

Why does my decking go green and slippery every winter?

Algae. Decking in Merseyside spends half the year damp, especially in shaded gardens, and algae grows quickly on wet timber. The film it leaves behind is what makes wet boards so treacherous underfoot. A proper clean removes the growth from the boards and the grooves, not just the surface, so it takes far longer to come back.

Should I oil the decking after you’ve cleaned it?

On timber, yes, once it has dried out fully. Oil feeds the wood, brings the colour back and slows down the weathering. We can price the oiling alongside the clean, or leave the deck clean and bare for you to do yourself. Composite boards don’t need oiling at all.

Do you clean between the boards as well?

Yes. The gaps and grooves trap leaves, soil and moss, and blocked gaps stop the deck draining, which keeps everything wetter for longer. Clearing them out is part of every decking job we do, not an extra.

Get a Free Quote

Tell us what needs cleaning and we will come back with a free quote. We take on driveway cleaning, patio cleaning, roof moss removal and render cleaning right across Prescot, Knowsley, St Helens and the rest of Merseyside, and the price we quote is fixed before we start, so it never moves on the day.

Prefer to call? 07940 571 759
Based in Prescot, L34 · Merseyside
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