Algae Remover Concentrate


Floorseal Algae Remover Concentrate is a concentrated professional use roof green algae remover. Suitable for roofs, driveways, patios, paths & pavers.

Spray onto the effected surface and allow to take effect over the following few days. Easy to apply with a simple pump-up garden sprayer for DIYers and professional cleaning companies.

A super strong effective formula which will tackle any algae, slime & fungus contamination. A really simple user friendly product for your roof, driveway, patio, paths or pavers. This cleaner can be used before or after sealing your surfaces with one of our Floorseal sealing products.

Alage Remover Concentrate is suitable for use as a one step patio cleaner, simply spray on and walk away. Easy to use instead of having to jet wash. This product can also be applied as a preventative measure against the initial, or recurring formation of algae and lichens.

Available in 5 litre & 20 litre containers with free economy shipping and express delivery shipping options.

Please read the full instructions & related information contained within the Technical Data Sheet. If you require help choosing a sealer or cleaning product please feel free to contact us on (01484) 861461. You can email us at


View delivery charges & timescales

Directions of Use

  • Please read the Technical Data Sheet for full instructions.
  • Carry out a test in an inconspicuous area.
  • If you find this product is not suitable for use on your project, do not continue to use.
  • Dilute the product 1:5 with clean water.
  • For heavy contaminations, this product can be used at a ratio of 1:4.
  • Apply to dry surfaces with a sprayer or watering can.
  • Do not apply when rain is predicted in the next 12 hours.
  • Do not exceed more than 5m2 per litre of diluted solution.
  • Do not wash this product off the surface once treated.
  • Repeat once or twice per year depending on local conditions.
  • Do not exceed the coverage rates.
  • Safe for children, pets & wildlife when dry.
  • Do not spray onto adjacent plants and lawns or allow the product to mist over them.
  • Do not allow this product to enter ponds or encounter aquatic life.
  • Please note this is not a general weed killing product.

Product Details

Powerful cleaning agent for eliminating green algae, slime & fungi from outdoor surfaces

Algae Remover Concentrate will effectively remove algae, slimes & fungi from roofs, tarmac, concrete, stone, block pavers and hard surfaced driveways. It is a powerful algae cleaning fluid for treating external vertical and horizontal surfaces. This cleaning solution will attack and remove all problematic organic growth like algae’s, fungi and green slime. Algae Remover Concentrate can be applied to any roof, driveway, patio or other external hard surface where you wish to quickly treat green algae & other organic contaminations

Spray on and leave the cleaner to eliminate the algae without agitation

Simply spray the product on and walk away, it could not be easier. This powerful algae remover has a non-acidic formula so it will not damage acid sensitive surfaces like limestone’s or concrete. It is highly effective at removing green algae and is suitable for use as a general one step patio cleaner. This product removes the need to regularly pressure wash green algae from your patio or pavers. For the removal of algae on roof tiles spray over the area and allow the solution to soak in. This will kill the algae and removes slimes and lichens over the following days. Follow the same procedure for the removal of algaes & other organic contaminants on tarmac driveways. You will notice algaes’s etc disappear over the next few days. For best effect saturate the surface so the solution is fully absorbed. Floorseal Algae Remover Concentrate is a super strong professional grade algae remover. It is to be diluted 1:5 with clean water, you do not need to apply this product neat. It can also be applied at a dilution rate of 1:4 when treating heavily contaminated surfaces. 5 litres of Algae Remover Concentrate will produce 30 litres of cleaning fluid. This means you can cover a surface area of approximately 125m2 with a single 5 litre container! Floorseal Alage Remover Concentrate is one of the most economical and effective algae removers on the market. Apply Algae Remover Concentrate using a low-pressure sprayer. Saturate the surface making sure not to exceed 5m2 per litre of diluted cleaning fluid. Please allow the product to dry on the surface to remove algae, lichens, slime and fungi.

This cleaning fluid can be used as a general one step, no rinse patio cleaner. It can also be used as a quick periodic cleaning solution to treat surfaces which have been sealed with one of our sealers.

Available in 5 litre & 20 litre containers with free economy shipping and express delivery shipping options.

Please read the full instructions & related information contained within the Technical Data Sheet. If you require help choosing a sealer or cleaning product please feel free to contact us on (01484) 861461. You can email us at



  • 5 litres of concentrate diluted into 25 litres of water will cover approximately 125m2
  • Do not exceed the recommended coverage of 5m2 per litre of diluted solution.

Delivery Charges & Timescale



UK Mainland Standard Delivery (4-5 days) Free
Express Delivery (1-2 days) £3.95 inc VAT
Scottish Highlands & Islands £9.60 inc VAT
Isle of Man £24.00 inc VAT
Isle of Wight £2.40 inc VAT
Northern Ireland £9.60 inc VAT

Delivery Charges & Timescale

  1. Shipping is based on a free standard delivery service to UK mainland addresses of 4-5 days.
  2. An alternative paid express delivery service of 1-2 days to UK mainland addresses is available.
  3. Our couriers do not deliver on a Saturday or Sunday (or bank holidays) other than by special additional arrangement.
  4. For the Highlands and Islands (including Northern Ireland) our standard shipping time may be slower than 4-5 days and is not free.
  5. An express shipping option to the Highlands & Islands & Northern Ireland is not available.
  6. Standard delivery is always free except to the Scottish Highlands & Islands, Northern Ireland & other UK offshore Islands.
  7. We do not dispatch orders on a Saturday or Sunday or bank holidays.
  8. We do not offer guaranteed shipping timescales.
  9. We do not deliver to the channel Islands, or Scilly Isles.

Safety Data Sheet

Technical Data Sheet

Blog articles & how to guides

For the latest blog articles and information for best user practice, click here.

Frequently Asked Questions

Is Algae Remover Concentrate safe to use on tarmac?

Yes, it is totally safe to use on tarmac driveways, car parks and paths.

Can Algae Remover Concentrate be used on roof tiles?

Yes you can use this product on roof tiles. This includes clay-based tiles, concrete, slate & cement-based roof tiles.

Do I need to pre-wet surfaces before using Algae Remover Concentrate?

No, it is designed to be sprayed onto dry surfaces and then left to soak in. No rinsing is required.

What sort of coverage should I expect from a 5L container?

Approximately 125m2 of coverage from a 5 litre container. This product is to be diluted 1:5 with clean water.

How long does this product take to work?

Once the surface has been treated algae & slimes will die off over the next few days.

Can I use Algae Remover Concentrate after sealing my patio with one of your products?

You can treat your patio after sealing with one of breathable sealers. It will inhibit the formation of green algae, slimes, fungi and black spot lichens.

After sealing, some of our customers use this product as a ‘quick clean’ method. Algae Remover Concentrate will rid your patio of green algaes early or late on in the season, when the prevailing weather is cold and damp.

Recent Reviews for Algae Remover Concentrate...

Additional information

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5 Litre, 10 Litre, 15 Litre, 20 Litre

Easy to apply

Our products are easy to apply using non specialist tools

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Full strength professional cleaning and sealing products


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Help and support with application methods and top tips!