Why You Cannot Rely on YouTube for UK Softwashing

Mark Cave

Picture this. Someone buys a 12 volt pump, a drum of sodium hypochlorite and a handful of hoses. They watch a few softwashing videos from America over the weekend, then book their first customer for Monday. Nobody stops them. There's no licence, no permit, no exam. And that's exactly where the trouble starts.

Mark Cave

I'm Mark Cave from SoftWash UK. In a recent episode we looked at whether softwashing is a legitimate business in the UK, and the answer was yes. There's no statutory licence, but you're still bound by COSHH, environmental rules and your workplace safety duties. So today we're tackling the obvious follow up. If nobody legally requires you to be trained, do you actually need training? Or can you just learn on the job?

Mark Cave

Let's start with those American videos, because that's where a lot of people get their education. Most of them show vinyl siding, timber clapboard and asphalt shingles. That's not what we work on over here. In the UK we're dealing with porous, through coloured render, monocouche, silicone thin coats like K Rend, Weber and Parex. We've got fragile clay and concrete roof tiles, wet dash and old brickwork. Take a mix or a method that suits vinyl siding and put it on a UK substrate, and you can get catastrophic results.

Mark Cave

And this is the part that catches people out. The barrier to entry on equipment is low. The liability is not. One botched job can scorch lead flashings. It can turn UPVC pink through a metal reaction. It can blow the binder out of painted render, or kill a client's garden, or harm a koi pond. In my experience, a job like that can cost somewhere between three and ten thousand pounds to put right. That can wipe out months of profit in a single afternoon.

Mark Cave

So what does training actually give you? I'd say five things. Let's go through them.

Mark Cave

First, chemistry. The number on the drum is not the number that matters. What matters is the percentage that ends up on the surface. Standard sodium hypochlorite is around 14 to 15 percent, and it weakens over time with heat, sunlight and age. So if you're guessing, you're either wasting chemical or you're overdoing it, and on render that can permanently change the colour.

Mark Cave

Then there's the surfactant. Plenty of people reach for washing up liquid. The trouble is that household detergents aren't designed to sit alongside bleach. They can destabilise the mix, shorten your dwell time and leave you with more runoff. A proper bleach stable surfactant, like Clever Wash, lowers the surface tension so the mix clings where you want it. That's chemistry doing a job, not just bubbles.

Mark Cave

And then the one that really matters. Acids must never be mixed with sodium hypochlorite. Oxalic acid for rust, or an acid based mortar cleaner, plus bleach in the same bucket gives off chlorine gas. That can be lethal. It's not a theory, and it's exactly the sort of thing you shouldn't be finding out by trial and error.

Mark Cave

You also need to know when bleach is the wrong tool. A fast oxidiser gives you quick results. A residual biocide, like Soft Wash Pro 50, works over weeks or months on roofs and tarmac. Pick the wrong one and you've either disappointed the customer or damaged the surface.

Mark Cave

Second pillar, knowing your surface. Modern monocouche and silicone renders need gentle, low pressure chemical cleaning. Too much pressure or the wrong chemistry can lift the aggregate, leave ghosting or give you patchy bleaching. And around the main surface there are secondary hazards, like lead flashing that can go dark brown or orange, UPVC that can discolour, and paint that was already failing before you arrived.

Mark Cave

Third, compliance. The Health and Safety Executive enforces COSHH, and as a self employed contractor you're expected to assess the risks and record them for the actual site you're working on. Not a generic page off the internet. On top of that, runoff must be kept out of storm drains, because those can discharge untreated into waterways. Good training covers containment, plant protection and the biocide rules under the Biocidal Products Regulations.

Mark Cave

Fourth, and this is the one I think gets overlooked, insurance. Public liability typically covers damage to third parties, like dropping a ladder through someone's conservatory roof. But it commonly excludes damage to the property you're actually working on. That's usually called treatment risk. Please check your own policy wording, because they do differ.

Mark Cave

Now imagine you've ruined a customer's render and you put in a claim for six thousand pounds. A loss adjuster is likely to ask what proof you have of competence. Training certificates, site specific RAMS, your COSHH paperwork. If you've got none of that, claims can be turned down, and then it's you personally paying the bill. Commercial clients, like schools, facilities managers and property owners, will often ask for the same documents before they give you a contract.

Mark Cave

Fifth, support. Something unexpected will happen on a job. A yellow stain appears on the render. A customer rings you in a panic. Internet forums will give you ten different guesses, and some of them are dangerous. Having proper technical backing and a community of trained contractors around you changes what you do next.

Mark Cave

That's why we built the SoftWash UK Approved Applicator Programme. It's an online course you take at your own pace, accredited by The CPD Certification Service. It covers chemistry, equipment, surface identification, safety, RAMS and business basics. Finish it and you're certified and listed in the Approved Softwash Applicator Directory. You also get your first twelve months of membership of the National Association of Softwash, with member meetings and resources.

Mark Cave

So, what can you do this week? One, read your insurance policy and ask directly whether damage to surfaces you're working on is covered, and what proof of competence they expect. Two, stop copying recipes from social media. Work out your dilution from your stock strength and the porosity of the surface. Three, run a pre flight routine every time. Identify the surface, do a test patch, wet the plants, isolate the runoff, and take before photos, all before you pull the trigger.

Mark Cave

Podcasts like this are a great start, but if you're serious about offering softwashing professionally, have a look at the course at softwashing.uk. Think of training as insurance for your business, not an overhead. The aim has always been to raise standards in this industry, and it starts with knowing why you're doing what you're doing.

Mark Cave

Thanks for listening, stay safe, and I'll catch you in the next one.