The Best Garden Decking Cleaners – Our Top 5

get your garden decking ready for summer!!! we bring you the very best in decking cleaners – check out our top 10!

Bestseller No. 1

Decking cleaner cleans and revives timber decking, removing dirt, grease, fungus, stains, algae and mildew
It opens the pores of the wood allowing maximum adhesion of coatings for a lasting finish
Ideal for use prior to applying a decking finish
Sufficient to clean a deck equivalent to 20-24 square metres in area

Bestseller No. 2

Chemical Trade Store – Decking Cleaner | Deck Algae and Mould Remover – Removes Dirt, Grime and Bird Droppings – 2.5 Litre

Cleans and Revives: Chemical Trade Store Decking Cleaner effectively removes built-up dirt, grime, and debris while breathing new life into your timber decking, helping to restore its original vibrancy and enhancing its overall appearance.
Extra-Strength Formulation: The extra-strength formulation of Chemical Trade Store Decking Cleaner tackles a wide range of outdoor contaminants, from stubborn grease and dirt to stubborn stains, leaving your decking looking fresh and well-maintained.
Optimal Adhesion: By opening the wood’s pores, Chemical Trade Store Decking Cleaner provides optimal adhesion to the surface, providing a smoother and longer-lasting finish to protect your decking.
Ideal for use Prior to Finish: Chemical Trade Store Decking Cleaner is ideal for cleaning your decking in preparation for applying a finish, ensuring that the surface is properly prepped for superior absorption and durability.
Suitable for all types of decking: Suitable and effective on all types of decking, including softwood, hardwood, and composite materials, making it a versatile choice for various outdoor decking.

Bestseller No. 3

Ronseal RSLGC Garden Cleaner, Clear, 5 Litre

Works in just 15 minutes
Gets rid of mould and algae
Leaves surfaces looking new
Works on patios, paving decking

SaleBestseller No. 4

PatioXpert – Decking Cleaner and Reviver 2.5L – Powerful Algae & Mould Remover | Outdoor Wood & Composite Deck Cleaner | Removes Dirt, Black Spots & Grease | Prepares Decking for Oils & Stains

Rapid & Effective Cleaning: Instantly breaks down and removes green algae, mould, black spots, dirt, and grime. Restores weathered decking to its original appearance, making it look fresh and well-maintained.
Prepares Decking for Finishing: The perfect pre-treatment before applying decking oils, stains, or sealants. Enhances absorption for a longer-lasting, professional-quality finish.
Fast Acting & Easy to Apply: Simply apply directly to your decking, agitate with a stiff brush, and leave for up to 30 minutes. Rinse off effortlessly with a pressure washer or hose. No scrubbing required for light soiling.
High Coverage & Versatile: Covers up to 10m² per litre depending on the level of soiling. Suitable for most decking materials, including hardwood, softwood, and composite, making it a reliable choice for all outdoor spaces.
Revives & Protects Against the Elements: Removes deep-set grease, grime, and winter-weather contaminants, helping to extend the life of your decking. Ideal for seasonal maintenance to keep your outdoor area looking its best year-round.

Bestseller No. 5

Furniture Clinic 5L Decking Cleaner for Wood – Weathered Deck Cleaner, Stain Remover & Restorer – Clean & Remove Dirt & Algae from Wooden Garden Patio Surfaces

ADVANCED FORMULA: Our wood Decking Cleaner and reviver provides highly effective results for cleaning and reviving garden decking, sheds, and fences. It cleans and restores the wood, bringing it back to its original colour.
QUICK ACTING AND EASY TO USE: Fast-acting and hassle-free. Simply apply directly to the surface and leave it to work.
REMOVES GREEN STAINING: This highly effective deck cleaner removes dirt, grease, and unsightly green staining from wood. It also works as an algae and lichen remover, ensuring your surfaces are left clean and fresh.
PREPARES WOOD FOR OILING: Use our wood Decking Cleaner before applying our Decking Stain or Decking Oil to open the wood pores, improving absorption for a long-lasting finish.
COVERAGE: One 5L bottle covers up to 25m² of garden decking, making it a cost-effective solution for cleaning large wooden surfaces.

SaleBestseller No. 6

Jeyes 4 In 1 Patio & Decking Cleaner (2 Litre). Patio Cleaner Fluid for Paths, Drives, Decking & Fencing – Outdoor Disinfectant Liquid or Pressure Washer Detergent – Tackles Dirt, Algae & Stains

4 IN 1 COMPLETE CLEAN FOR PATIOS & DECKING – Tackle tough grime on paths, patios, decking and fencing the easy way – just use Jeyes! No mixing, no fuss—just powerful 4-in-1 cleaning action. Pressure washer compatible for an even deeper clean
RESTORES THE NATURAL COLOUR OF HARD SURFACES – Lift away layers of sludge and slime to reveal the true beauty of your patios and decking. Jeyes driveway cleaner gets to work fast, eliminating buildup for outdoor spaces that are fresh and ready to use
FIGHTS DIRT, LIMESCALE, STAINS & ALGAE – Get your garden summer-ready with Jeyes’ powerful 4-in-1 action. Tackling everything from stubborn limescale to ground-in dirt, this patio and decking cleaner delivers long-lasting results without scrubbing
READY TO USE STRAIGHT FROM THE BOTTLE – The pre-diluted formula makes cleaning quick and easy. Simply apply and let Jeyes outdoor patio cleaner solution handle the tough stuff. For lighter surface growth, simply dilute for a milder application
THE ORIGINAL OUTDOOR CLEANER – Jeyes has been keeping outdoor spaces clean and protected since 1877. Trusted by generations, with over 145 years’ expertise, our products fight dirt, stains, bacteria and germs to make outdoor cleaning easier than ever

Bestseller No. 7

Rustins Composite Decking Cleaner – Effective Mold and Mildew Remover | Deep Cleaning Solution for Decks, Patios, and Outdoor Spaces 4 litre

Powerful Mold and Mildew Removal: Rustins Composite Decking Cleaner effectively eliminates mold and mildew, restoring your deck to its pristine condition. Say goodbye to unsightly stains and discoloration.
Gentle Yet Effective Formula: Our cleaner is tough on mold and mildew, yet gentle on your composite decking. It won’t damage the surface or compromise its integrity, ensuring long-lasting results.
Versatile Outdoor Cleaning Solution: Not just for decks, our cleaner is perfect for patios, fences, and other outdoor surfaces. Effortlessly restore the beauty of your entire outdoor space. ADD TO BASKET now.
Easy to Use: Simply apply, scrub, and rinse for a thorough clean. Our cleaner is hassle-free and requires minimal effort, saving you time and energy.
Long-lasting Protection: Formulated to provide lasting protection against mold and mildew, our cleaner helps prevent future growth, keeping your composite decking looking fresh and new

Bestseller No. 8

Pro-Kleen MY16 Patio Cleaner Simply Spray and Walk Away Green Mould and Algae Killer for Patios, Fencing and Decking 5 Litre Concentrate (Makes 25 litres)

Effortless Cleaning: Transform outdoor spaces effortlessly—Pro-Kleen Simply Spray removes green mould and algae with no scrubbing or pressure washing required
Perfect for All Hard Surfaces: Clean patios, decking, fences, pathways, roofs, sheds, UPVC windows, boats, and more—indoors or outdoors—quickly and effectively
High-Strength Super Concentrate: Get unbeatable value! A 5L bottle creates 25L of solution, covering 175m² with 50% more active ingredients than competing brands
Long-Lasting Regrowth Protection: Enjoy long-lasting results—our powerful formula eliminates regrowth for up to six months. Simply spray, wait, and watch it work!
Safe for Families and Pets: Feel confident with our non-caustic, biodegradable formula that’s free of acids, bleach, and harmful chemicals—safe once dry

Bestseller No. 9

SmartSeal Deck Cleaner – Powerful And Efficient Composite Decking Cleaner & Fence Cleaner- No Pressure Washing – Concentrated Formula Decking Cleaner for Wood – Removes Algae Easily! (5 Litre)

🧹 REVITALISE AND CLEAN YOUR DECK WITH SMARTSEAL DECK CLEANER – High-Performance Decking Cleaner and Reviver. Specifically designed to remove green growth, algae, and black spot lichens from decks, fences and other external wooden surfaces, this powerful non-acidic formula ensures thorough cleaning. Say goodbye to unsightly growth and enjoy a rejuvenated wooden deck with this highly effective decking cleaner and algae remover.
🛠️ RESTORE YOUR DECK WITH CONFIDENCE – Say goodbye to the need for pressure washing, which could potentially damage your decking. Our deck restorer is designed to remove the need for aggressive pressure washing, preventing potential damage such as marks, striping, and compromised wood integrity. Safely revive your composite or wooden decking with our effective formula. Revive the colour and beauty of your garden decking with our trusted deck restorer.
🦠 POWERFUL DECKING ALGAE REMOVER AND RESTORER – Experience the ultimate solution for killing off green growth and removing organic matter from your decking and garden furniture. Our formula contains potent biocides specifically designed to target and eliminate green algae and other organic substances such as black lichen. Revive the colour and appearance of your composite decking with our effective and reliable decking restorer.
🧑‍🔧EFFORTLESS COMPOSITE DECKING RESTORATION – Rejuvenate your composite decking and restore its vibrant colour with ease. Our composite decking restorer provides a simple DIY solution that can be carried out by anyone. Simply apply the product and work it into the surface using a brush or stiff broom, then allow it to sit for 1-2 hours. Finally, rinse with water. No professional assistance required – you can confidently undertake this project yourself.
🧴 SUPERIOR BLACK SPOT AND ALGAE REMOVER – Discover the power of our algae remover and cleaner. Effortlessly eliminate algae, grime, and black spots. Most dirt and grime disappear after one application, for a “Good as New” look. For stubborn areas, consider a second coat. Say goodbye to green algae and black lichen with our effective deck cleaning solution.

SaleBestseller No. 10

Caravan King – Decking Cleaner – Cleans & Revives Decking, Fences & Patios, Removes Dirt, Algae, Grime & Mould, Wood & Composite Caravan Decking, 1L

Cleans Decking, Patios & Fences – Removes algae, moss, grime, dirt and mould from wooden and composite surfaces.
Restores Natural Colour & Grip – Lifts embedded dirt and brightens tired, weathered timber while helping to restore anti-slip properties by removing slippery algae.
Apply, Scrub, Wait & Rinse Formula – Works within 15 minutes, with minimal effort and no power washer required. Dilute for general cleaning or use neat for targeted stain removal.
Safe for Caravan Decking Areas – Suitable for caravan steps, veranda decking, and portable timber platforms.
Compact 1L Format – Ideal for smaller decks, steps and targeted cleaning tasks. Can be diluted with up to 10 parts water depending on the level of soiling (use neat for stubborn stains)

Last update on 2025-09-18 / Affiliate links / Images from Amazon Product Advertising API