Slipway Cleaner Chemical


The leading choice as a slipway cleaner for any part of harbour infrastructure, our marine algae cleaner product is completely environmentally friendly and safe for discharge into the water.

Perfect for ridding steps, quaysides, pontoons and slipways of slippery algae and dirt, with dilution ratio of 1:10 this product is classified as non-hazardous to the marine environment and contains no biocides, bleach, or acids.


It is so safe and non-toxic that it has been given food-safe status by Campden BRI and staff need wear no PPE items while in normal use. The chemical is therefore also ideal as a boat hull cleaner as it is safe for any aquatic environment.

The all-natural detergent breaks down the bonds of algae, and marine growth and surface tension holding algae and dirt to the substrate and lifting it off. On numerous occasions, it has been proven to limit the re-growth of algae better than using sodium hypochlorite and it is ideal as a cleaner for slipways and piers.

The slipway cleaner chemical is sold as concentrate in 5 litre or 20 litre containers and would normally dilute 1 part concentrate to 10 parts water. We can also supply in 200 litre or 1000 litre IBC quantities.

Slipway Cleaner Chemical


When used as directed this product does not need an Environment Agency environmental permit for a Water Discharge Activity issued under the Environmental Permitting Regulations. Perfect for cleaning concrete, natural stone, granite, and pontoons or as a boat wash cleaner.

As the product is non-biocidal it also adheres to HSE guidelines for chemicals that land up in the sea and will not cause chemical burns to humans as sodium hypochlorite did in this disturbing incident in the Western Isles.

We have a brief ‘How To Clean A Slipway‘ video here which shows the importance of scrubbing the product to the substrate:

To place an order online for fast delivery all over the UK please see the links here – you can pay by card and do not need a PayPal account yourself:

Marine Algae Cleaner & Remover 5 Litre Jerrycan – £35.00 + VAT Each – TO ORDER CLICK HERE

Marine Algae Cleaner 20 Litre Jerrycan – £110.00 + VAT Each – TO ORDER CLICK HERE

The carriage charge is normally £12 + VAT but is more for off-shore, the Channel Islands and Ireland – please enquire. Our full range of professional concentrates and ready-to-use BoatKleen marine safe cleaners can be seen on this link.

Please see a testimonial below:

“We were most impressed by the test strip we did on our jetty which was very badly fouled, much worse than we would normally let it get.” Dalgety Bay Sailing Club, Fife, Scotland.

A powerful and eco-friendly solution to marine algae growth problem on slipways that is also well priced and reduces the number of applications that harbour staff or cleaning contractors need to undertake. Useful guidance from GOV.UK on slipways cleaning chemical use.

Download a safety data sheet for marine algae cleaner concentrate here.

Please contact us to discuss your needs further at:

Acute Build Clean | 74 Bo’ness Road | Grangemouth | FK3 9BL

Tel: 01324 309100 | Email:

London Office | 47 Gee Street | Clerkenwell | London | EC1V 3RS

Tel: 0208 088 3703 | Email:

You can see a test patch cleaned with our slipway cleaner chemical on a heavily bio-fouled slipway below:

Slipway Cleaner Chemical