10 bestComposite Deck Cleanersof May 2025
112M consumers helped this year.
37% off
1
Wet & Forget Mould, Lichen & Algae Remover, Outdoor Cleaning Solution, Black Mould Remover, Bleach Free, 5 Litre
Wet & Forget
9.7
17% off
2
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)
Pro-Kleen
9.4
3
Rustins Composite Decking Cleaner - Effective Mold and Mildew Remover | Deep Cleaning Solution for Decks, Patios, and Outdoor Spaces 4 litre
RUSTINS
9.1
4
Jarder Spray & Leave 4 x 5 Litre Concentrate Cleaner - Patio Fencing Decking - Green Mould & Algae Killer (20L)
Jarder
8.8
5% off
5
Wet & Forget Rapid Application Mould Lichen and Algae Remover, Outdoor Cleaning Solution, Black Mould Remover, Bleach Free, 2 Litre
Wet & Forget
8.5
6
Composite Decking Cleaner & Aftercare Pack 10L
HLS Supplies
8.2
7
HLS Composite Decking Cleaner and Restorer 5L - High-Performance Concentrated and Easy-to-Use Formula for Comprehensive Deck Care and Restoration
HLS Supplies
7.9
18% off
8
GLEAN Green Clean Algae Remover | Patio Cleaner | ALGAE, LICHEN, MOULD & MOSS REMOVER | Wet It - Forget It - Won't Regret It | Spray And Leave | Coverage: 10m² | 1 Litre
GLEAN
7.6
9
SmartSeal Deck Cleaner - Powerful And Efficient Composite Decking Cleaner & Fence Cleaner- No Pressure Washing - Concentrated Formula Decking Cleaner for Wood - Removes Algae & Moss Easily! (5 Litre)
SmartSeal
7.3
10
Starbrite Non-Skid Deck Cleaner wih PTEF 1L
STAR BRITE
7.0
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A Guide to Selecting the Best Composite Deck Cleaners
Choosing the right composite deck cleaner is essential to maintaining the beauty and longevity of your deck. Composite decks are made from a combination of wood fibers and plastic, which makes them durable and low-maintenance. However, they still require regular cleaning to prevent mold, mildew, and stains. When selecting a composite deck cleaner, it's important to consider several key specifications to ensure you get the best product for your needs.
Cleaning Power
Cleaning power refers to the effectiveness of the cleaner in removing dirt, stains, mold, and mildew from your composite deck. This is important because a cleaner with strong cleaning power will save you time and effort while ensuring your deck looks its best. Cleaners can be categorized into light-duty, medium-duty, and heavy-duty. Light-duty cleaners are suitable for regular maintenance and minor dirt, medium-duty cleaners are good for moderate stains and grime, and heavy-duty cleaners are designed for tough stains and deep cleaning. Choose a cleaner based on the current condition of your deck and the type of stains you need to remove.
Safety
Safety refers to how safe the cleaner is for you, your family, pets, and the environment. This is important because some cleaners contain harsh chemicals that can be harmful if inhaled or come into contact with skin. Look for cleaners that are labeled as non-toxic, biodegradable, and environmentally friendly. These cleaners are safer to use and less likely to cause harm to plants and animals around your deck. If you have children or pets, prioritize safety to ensure their well-being.
Ease of Use
Ease of use refers to how simple and convenient the cleaner is to apply and rinse off. This is important because a cleaner that is easy to use will make the cleaning process quicker and less labor-intensive. Some cleaners come in ready-to-use spray bottles, while others require mixing with water. Ready-to-use cleaners are more convenient but may be more expensive, while concentrated cleaners that need mixing can be more economical but require more effort. Consider your preference and the amount of time you have for cleaning when choosing a cleaner.
Compatibility
Compatibility refers to whether the cleaner is suitable for use on composite decking materials. This is important because using a cleaner that is not compatible with composite materials can cause damage or discoloration. Always check the product label to ensure it is specifically designed for composite decks. Some cleaners are multi-surface and can be used on various materials, but it's best to choose one that explicitly states it is safe for composite decking to avoid any potential issues.
Coverage Area
Coverage area refers to the amount of surface area a cleaner can effectively clean per unit of product. This is important because it helps you determine how much cleaner you will need to purchase to cover your entire deck. Cleaners with higher coverage areas are more efficient and cost-effective. Coverage is usually measured in square feet per gallon. To choose the right cleaner, measure the total area of your deck and compare it with the coverage information provided on the cleaner's label. This will help you estimate the quantity needed for a thorough cleaning.
Drying Time
Drying time refers to how long it takes for the deck to dry after cleaning. This is important because a shorter drying time means you can use your deck sooner. Drying times can vary based on the cleaner's formulation and weather conditions. Some cleaners are designed to dry quickly, while others may take several hours. If you need to use your deck soon after cleaning, look for a cleaner with a fast drying time. However, if you have the flexibility to wait, drying time may be less of a concern.
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