May 27, 2015
Tennis courts abound in most towns and cities and are a profitable market for softwash contractors.
A tarmac tennis court needs regular maintenance to keep it both looking good and safe to play on. Biological growths such as algae and moss can make the playing surface dangerously slippery. And it’s simply not much fun playing on a dirty court that's been colonised by various forms of biological growths.
Algae often appear after a prolonged wet spell but the whole court may not need to be treated. You'll likely find the borders and shady areas require more frequent treatment than the rest of the court.
The most effective approach is to scrape the worst of the biological growth off first. Then spray using professional soft washing equipment, or if that is not available a watering can with a fine rose can do a reasonable job.
Thick and heavy moss growth will need plenty of mix to ensure it gets fully soaked. Applying twice on a first clean, to ensure saturation, is often a good idea.
The dilution rate on a first clean may need to be 20-30:1, while for maintenance cleans 40-50:1 is usually sufficient. The actual dilution rate will vary according to the degree of colonisation and the local environment.
Quick tip: If children are to use the court keep the dilution rate to a max of 40:1.
If the customer wants the court to look immaculate very quickly – perhaps because of an approaching tournament – use a light power / pressure wash before treating with Bio Cleanze.
Manually scraping the worst of the moss from the surface prior to treating may also be indicated.
Alternatively, use Benz Lightning Cleanze at 5-10:1, in conjunction with light power / pressure washing, for the fastest possible results.
Bear in mind that LIghtning Cleanze can lighten the colour of tarmac, so treat a test patch first and get your customer's agreement that it is acceptable before treating the entire court.
If Lightning Cleanze is applied at 5:1 the lightening effect may be considerable, so consulting with your customer to ensure they are happy to go ahead is essential.
Quick tip: Some customers prefer the lighter grey colour of tarmac after treating with Lightning Cleanze. Some do not. And many do not mind either way. It's simply a matter of personal preference.
Acrylic painted tennis courts are best treated differently.
We suggest first treating the entire surface with Bio Cleanze at 50:1, which will kill the biofilm. Leave the court for a minimum of one week following treatment to let the biofilm start to break down.
Then a treatment of Lightning Cleanze at 5-10:1, followed by a light pressure wash to rinse and remove any surface debris, will leave the court clean and the players – and of course your customer – very happy.
You will find this to be a far easier process that uses a smaller quantity of chemical and water than if you had not pre-treated with Bio Cleanze.
You could of course use Lightning Cleanze as the first treatment if time is particularly critical. But this will mean using more Lightning Cleanze ( at 4-5:1 dilution). Also, more aggressive pressure washing may be required, which could harm the acrylic coating.
Whichever method you use, once clean keep the court looking great all year with an ongoing "Clean & Maintain" treatment.
We hope this information is helpful.
Ben, Leo & Fiona
Legal statement about using biodegradable Bio Cleanze to kill and control moss: For many years the active ingredient in Bio Cleanze (DDAC) was used to kill and control moss.
But as from June 2015 the politicians and bureaucrats decreed that moss is to be considered a “plant” and therefore comes under a different set of labelling regulations.
As such the law now states that only manufacturers of expensive herbicides (aka “weedkillers”), which are often quite unhealthy for humans and for our environment as a whole, can claim to kill and control moss.
From June 2015 no biocide manufacturer can state that a biocide such as Benz Bio Cleanze kills and controls moss, even though it was previously used to kill and control moss for many years.
We leave you to draw your own conclusions ...
Comments will be approved before showing up.
September 15, 2021
Many soft wash contractors can be unsure of the safest way to soft wash asbestos roofs. So in this post we lay out the best practices we've learned from running a soft washing business since 2013.
Click the link on this page to learn how to treat asbestos ...
September 08, 2021
Ben demonstrates how to scrape moss and lichen from natural slate roof tiles and treat the biofilm to kill all the growths on this natural slate roof.
Click the link on this page to watch the how-to video ...
September 02, 2021 2 Comments
When soft washing it's vitally important to protect surrounding building materials. e.g. lead flashing. And not to create "clean streaks" – from overspray and run-off – on surfaces that are not part of your contract.
Click the link on this page to watch how we achieve this when soft washing a chimney ...
It's a free resource for people wanting to learn about the soft washing industry, to expand an existing business, or build a new business.
Soft washing reduces, or even eliminates, the need to use high-pressure washing.
Instead, once the build up of algae, lichen, fungus, moss and mould – the root causes of properties looking "dirty" – has been treated, the natural "self-cleansing" of sun, rain and wind removes the surface residue through time.
By educating the cleaning trade and public about soft washing we are helping develop an industry that offers sustainable treatments to clean and maintain exterior hard surfaces.
Subscribe to our free trade tips blog to download your "Professional Soft Wash Contractors Pricing Guide".
The free guide shows you – step by step – how to easily, quickly, and accurately create softwash business quotes.
This saves you time, is a highly professional approach, and increases your chances of winning new contracts.