I’m a 57 year old woman and I used sodium hypo. I was dressed like something for breaking bad in my PPE which cost 12 quid for the two of us. 1:4 ratio. Less noise, less damage, less water. Quite easy. Worked with husband. Used snow shovel to protect lawn. Strict caution though on using as it burns and damages. It’s brilliant stuff no more need for blokes wreaking the patio or drive. Made liquid up in a bucket and brushed in. Quite therapeutic.
I love your effort! increase your SH to 5:1 and you won't have to brush the surface and it will rinse pretty clean. Im Devin I'm the owner of WashWorks Power Washing in Foxborough, MA. USA. I love the UK and Jeremy Clarkson.
Well put together video, unlike some others that faff on for ages. Just so happens that I used this stuff last year on block driveway using the exact same method. Came up a treat. Only difference was I used a pressure washer to rinse it down afterwards and "walk" the crap into an area for disposal. One interesting thing I learnt from this video was that once it had reached its expiry date it only degrades to 10% and is still usable. That's great news as I have around ten litres left over from last year. Thanks. Hope that sneeze wasn't covid!
Good video, ... I've used Sodium Hypochlorite for years cleaning stone and concrete driveways with oil stains, works wonders, .. Even cleaned with Sodium Hydroxide (drain cleaner), you can't beat chemical cleaning, forget all the crap in the shops, they are all to diluted to do a proper job .... My advice is if you need to wear protective gear then it will work! ;-)
i had a bad patio, algae, lychen( however you spell it) used roughly 3-1 mix and left it for an hour. came out perfect, only a few bits i had to go over with a brush and another mix.
Brilliant Darren. I will be taking on this task next weekend, the solution arrived last week. Your video was comprehensive and easy to follow, actually made the task a lot simpler than i thought it would so thank you. One question how long would you suggest leaving the solution on for please?
@@Darren-Green Many thanks for your swift response Darren. I'm rather excited!!!! Cant wait to see the finished result. I will be cleaning my 85 year old father's patio. He adores sitting out in the sun for hours on end so his wonderful daughter (lol) will be making the experience a much nicer one. I planted some wonderful plants, have already moved them onto the lawn, Ive painted his fence and shed so this is the last bit to do before the summer (that I hope we get)!!!! Thanks again
Hi Darren, Thank you very much for the first-class info, have been a great help. Can you advise on a start-up water-fed pole system for a one-man operation?
If you are diluting it that much you could just use supermarket bleach which is often available in concentrations up to around 5%. More convenient for the DIY'er who doesn't want to buy a massive quantity for a once a year job.
excellent suggestion. Although this is easy solution but everyone seems to try to sell pressure washer. is it due to Hypo being unsafe or they just want to sell an expensive pressure washer?
Of course they want to sell you an expensive power washer, that's their job! :) Yes Hypo can be dangerous if you are not cautious and follow the instructions properly.
Yes it can burn the plants. The trick is to literally soak the edges, grass plants etc to saturation with water prior to starting. That way the plants literally stop drinking for a while and as the peroxide is inactive after about 15 mins it prevents the plants consuming the harmful parts.
You can but I would use it in weaker dilutions. The key to tarmac is a stiff brush and elbow grease. Always best to clean tarmac after a hot couple of days in summer when the moss is dried out and brushes off more easily.
Yes. Be sure to water all immediately surrounding grass to saturation point prior to treatment. Proceed with cleaning. The saturated grass won't absorb any more water or solution. The solution will be ineffective after 30 minutes.
Yeah.... Close but not quite. Sodium Hypochlorite is the ACTIVE INGREDIENT in bleach.... Not actually bleach itself. Most bleach has a SH content between 0.75 and 3.0% dependant on intended usage.
Nope. He (I) said if youre asking me instead of Google you shouldn't bother. Please quote verbatim amd not just three words from a sentence out of context in efforts to exacerbate an inflammatory post mate. 👍🏻
when you have small weeds in the bloc paving , is it best to remove weed first , or would this instantly kill weeds without having to weed manually , how would you approach that situation , my thanks in advance
Green Pro Clean Ltd is it best to mix a professional weed killer in it as well, doing both jobs at once? Plus adding the surfactant (fairy liquid) will help both the bleach and the weed killer?
Not bad but you really should be mixing a surfactant into the solution I.E washing up liquid it helps it stick to the surface and speeds the job up 3-4 times
Theoretically it should. I once had a conversation with a headstone company and they told me how they do it and there's a amount of permission you need from cemetery or church etc. Not as straight forward as you may think.
Can I spray Hypochlorite with the detergent hose in the pressure washer? I have a petrol pressure washer that has a little sucking hose to feed from a bucket, the PW also has a sprinkle tip to work as a normal hose.
You can BUT the hypo is harsh on the internals of your machine so be sure to run a good 20 or 30 liters of clean water through it AS SOON as you are done.
Spray through a 2 gallon pump sprayer. You will be able to control your overspray somewhat better. Use a course spray. The wind will carry a fine spray where you don’t need or don’t want. And he is correct, wet doesn’t all foliage in the area before spraying and after. Also basic Personal Protective Equipment is more than a good idea.
As long as the grass is thoroughly soaked (clean water) prior to application of Hypo it will be fine as long as you also soak the grass again immediately after application.
Like anything, if used incorrectly it will do damage. If you are using it around grass or foliage pre soak the foliage thoroughly, this will prevent the grasses from soaking up more liquid, they wont absorb more than they can handle. Then apply Hypo, hypo will only remain active for about 20 mins before breaking down far enough that it can be rinsed off. Any real power washer (not the Karchers or Black and Deckers you use to wash the car type but commercial grade power washers can destroy the grass a hell of a lot faster than Hypo can. It's all about correct usage regardless of the tool.
I think that's mold, not algae. green mold. "Mold is stubborn and much harder to remove, making it a more costly endeavor. More importantly, the greatest difference is in the way they affect your health and the health of your family. Algae growing anywhere on your home, while unsightly, will not do any harm to your health or the health of your family." Oh so that's why it got removed so easily - it is algae and not green mold.
You are totally correct - I have been to many homes with my job where the homeowner has black spots of mould all over the windows and I explain about the health factor - If I go back the next day I can guarantee it's already gone.
@@Darren-Green "Sodium hypochlorite is most often encountered as a pale greenish-yellow dilute solution referred to as liquid bleach," - so instead of renting a power washer - I just poured bleach and scrubbed it in. The smell is very strong. I think it's 7.5% concentration. So the black mold is totally gone. I had used vinegar earlier - which got rid of the green mold on top. I think I breathed in chlorine gas from the vinegar bleach reaction. oops. haha. So I could smell it through my bed room window - since I didn't insulate that window. But I survived the night and just finished off the bleach bottle on the patio. Need to get another bottle of bleach to finish the job. Cheaper and more effective than a power washer. Then there's some rust stains now underneath the black mold. So I'll have to switch back to vinegar to get rid of the orange color. I can wait - wash it off first of course. thanks
This was an interesting video and informative talk at the end. Did you wear a face mask when using this stuff. Looking to clean roof tiles, path and patio. All the best from Old Kilpatrick, near Glasgow
@@Darren-Green should the same precautions be used with bac 50? Can't find much information about it, and what dilution ratio would you recommend for moss on brick work. Thanks
Can too strong a mixture of sodium hypochlorite damage paving? In my case Indian sandstone - I been mixing 1 part 15% with 4 parts sometimes 3 parts water.
I've got a tub of the stuff, going to do my drive/garden soon, how long do I leave it/how many times do I need to wash off the chemical before my dogs can go on it safely?
If you're a grown adult (and i'm guessing from the dumbass remark your probably a prepubescent boy trying to be clever) then you can do what you like. I am not your mom nor you consciousness. If it doesn't kill you let us know the long term problems you will face for the rest of your days because I guarantee there will be several, and if it does kill you, i'll catch your obituary in the Darwin Awards.
Hypo is highly corrosive, so be sure to rinse very thoroughly and do not let the hypo dry on the surface. Keep misting the surface if there is a danger of drying.
I have a poured concrete pathway (not pavers as your video), i have sealed the concrete so it doesn’t dust. Will the hypo damage the concrete sealer i applied?
@@franceslombard6751 hypo is either 10 or 15% in strength. Then you dilute that to where you want it to be. 'Bleach' such as clorox or domestos etc is around 3% strength so once you dilute that even weaker. Bleach active ingredient is the Hypo content the rest is surfactants etc. In short if you use domestic bleaches instead of hypo you will have to wait a lot longer for it to work.
At such low dilution and applied by watering can it's inactive after about 7-10 minutes. This is why I laugh when I see people saying 'leave dwell for 30 mins blah blah' Also at the dilution used it has less active ingredient than the Clorox or Domestos type products you use in you home but you still flush those down the drain don't you? 👍😁
