Best decking cleaner 2020: 5 top buys for a spotless deck

The best decking cleaner will have your deck ready for summer in no time. Choose from our favourite deck cleaners

decking cleaner: decking area next to a modern home with brise soleil
(Image credit: Ronseal)

The best decking cleaner is what you need this summer to enjoy a spotless deck that looks like it was laid yesterday. The deck cleaners on our list are so much more than just a basic cleaning product – they will treat and protect the wood, too, caring and nourishing it, as well as removing buildup, stains, and algae.

We've created the ultimate guide to decking cleaners to ensure your outdoor space looks fresher than ever. This way you can enjoy the warm weather worry-free and when the time comes, you can show off your sparkling (not so new) deck to your friends. Think of the summer parties...

Check out our buying guides to the best decking oils and the best decking paints.

The best decking cleaner: 5 top picks

Pro-Kleen Simply Spray & Walk Away is the best decking cleaner for stubborn mould

1. Pro-Kleen Simply Spray & Walk Away

Best decking cleaner spray: remove stubborn mould or moss with ease

Size: 5 litres
Time it takes to see results: 48 hours
Eco-friendly?: Harmful to aquatic life
Reasons to buy
+Non-acidic  +Can be used on virtually any surface+Works straight away

Mould or moss needn't destroy your decking's good looks; it can be easily treated with a spray cleaner like this one. This deck wash is low-maintenance and non-acidic, it won’t damage your decking in the cleaning process. It’s biodegradable and not harmful to kids or pets, either, so all you need to do is spray it on the affected areas and leave it to work its magic. Users have confirmed they saw results within three days of application, without having to scrub or apply any extra elbow grease. 

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Ronseal Decking Cleaner & Reviver is the best decking cleaner for reviving timber

2. Ronseal Decking Cleaner & Reviver

Best decking cleaner for reviving timber decking: it will look as good as new with this cleaning formula

Size: 5 litre
Time it takes to see results: 30 minutes
Eco-friendly?: No
Reasons to buy
+Opens up the pores of the wood +Fast-acting 
Reasons to avoid
-Need to use plenty of product for it to work

If you’ve got timber decking, then this deck cleaner could be the best thing to revitalise it before you re-coat it. It is potent enough to remove dirt, grease, fungus, stains, algae and mildew, and it opens up the pores of the wood which prepares it for coating with a stain or oil. You can expect your decking to last a lot longer when you treat it with this cleaner whenever it needs it. Users have said it only takes 30 minutes (with the addition of a good scrubbing) to see a difference.  

Shop more decking reviver at Amazon

Dirtbusters Spray Today Gone Tomorrow is the best commercial strength formula decking cleaner

3. Dirtbusters Spray Today Gone Tomorrow

Best strong cleaner for your deck: this commercial formula that doesn’t require any extra work

Size: 5 litres
Time it takes to see results: 48 hours
Eco-friendly?: Biodegradable, but take care around plants and ponds
Reasons to buy
+No jet washing or brushing required +Can also be used on patios and driveways
Reasons to avoid
-More expensive than other products

For those gardens that have really been neglected over the winter months, this commercial strength decking cleaner could be just the job. You can expect to see maximum results with minimal effort, as all you need to do is mix the formula, spray it on to your decking, then leave it. There is no need to scrub the decking or use a jet washer as it is potent enough to work on its own. You can also have peace of mind that this decking cleaner isn’t harmful to aquatic life, and it is biodegradable so it’s safe for children, pets and the environment, too.  

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Roxil 100 Decking and Patio Cleaner

(Image credit: Amazon)

4. Roxil 100 Decking and Patio Cleaner

Best decking cleaner for pressure washers: blast away the dirt with this pressure washer cleaning fluid

Size: 5 litres
Time it takes to see results: 24 hours
Eco-friendly?: Harmful to aquatic life
Reasons to buy
+Heavy duty cleaner +Prevents algae regrowth+Hose off or leave on
Reasons to avoid
-Takes a lot of product for it to work

If you use a pressure washer to clean your decking but need a little something extra to help remove that stubborn dirt, then this decking cleaner should do the trick. It’s designed for heavy duty cleaning and should remove pretty much any grease, dirt and grime. Don't have/don't want to use a pressure washer? No problem: you can simply apply this deck cleaner and let the rain do its job. Work the cleaner in with a stiff brush for even  better results. The best thing about this cleaner, however, is that it keeps working for months afterwards, preventing regrowth of mould and algae.

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The best decking cleaner: Cuprinol

(Image credit: Cuprinol)

5. Cuprinol Decking Cleaner

Best decking cleaner to freshen up: prepare your decking for a fresh stain or oil coat

Time it takes to see results:
Reasons to buy
+ Removes dirt, grease and algae 

Every year you should re-stain or oil your decking to ensure it not only looks good but is protected against the elements. If your decking is looking a little neglected, then this decking cleaner is a good place to start so that yours is prepared for summer. The deck wash formula is designed to remove all forms of dirt, grease and even build-up of algae, and will create a smooth blank canvas for you to work on when oiling and staining. It should be applied and then left to dry for the recommended time of 16 hours before taking the next steps. 

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What is the best decking cleaner?

If you have a tough job on your hands, such as moss or mould growth, a strong solution such as the Pro-Kleen Simply Spray & Walk Away, will do a good job at eradicating it quickly and efficiently. This is rated our best decking cleaner you can buy.

Click to shop the Pro-Kleen Simply Spray & Walk Away at the best price.

  • Once you've chosen the best cleaner for your deck, check out more garden ideas at our hub page. 

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