[james peters]

does anyone use biocides on render, like algo clear, or softwash pro 50
I understand that with these pruducts you just apply the biocide via spray nozzle or brush , then leave it to work over time .

if you have used this method , what have been your experiences?
also do you use a surfactant in with the biocide to help it cling to the render ?

[Smudger]

I use this method but don't pay out on expensive brews like algo clear - hypo does the job instantly at a fraction of the cost ( now with the added benefit it kills corona virus  )

Darran

[the king]

Algo clear pro is very expensive i use Benz or soft wash solutions biocide works very well on k rend but it has its limits it won't touch black ,i like to hypo then bio after on k rend but any thing eals ill use one of other you dont need safectent with bio but its best to use safectent in hypo ,i like to use clever wash 

[harleyman]

whats a good recipe for k rend using hypo

[zesty]

whats a good recipe for k rend using hypo

Water
Hypo
Soap

I use a 60l barrel, 15 litres of SH and the rest water with a few big dollops of soap.

Simple as that, you can add more hypo dependening on how stubborn the algae/dirt is.

[the king]

300 mill of clever wash mixed in 20 leters of hypo then mix 3 to 1 water job done

[CLEANCARE WC]

Go on then... Been off the forum for a couple of years what's HYPO? link please if you have one 👍

[Splash & dash]

Algo clear pro is very expensive i use Benz or soft wash solutions biocide works very well on k rend but it has its limits it won't touch black ,i like to hypo then bio after on k rend but any thing eals ill use one of other you dont need safectent with bio but its best to use safectent in hypo ,i like to use clever wash 

Price wise there isn’t much in it I just bought 5 ltr of Benz cost £106 delivered.  Algo clear pro 10 ltr £154 delivered , Benz stuff took 10 days to arrive algo clear was delivered in two !!!!! All biocides will kill red , black and green algi mould etc if you use the right dilution rate and are prepared to Waite  up to six months plus . Hypo will kill and remove it in an hour , and costs £12 for 20 ltr. It’s a no brainier which product to use

[Splash & dash]

Go on then... Been off the forum for a couple of years what's HYPO? link please if you have one 👍

Sodium hypochlorite , or bleach , sold from farm shops as dairy hypochlorite, or from swimming pool supplies shops as a sterilising  agent for  pools .

[TomCrowther]

But what is best to use on roof tiles? Hypo or Algo Pro.

[Splash & dash]

But what is best to use on roof tiles? Hypo or Algo Pro.

We have used both on different jobs I dont find bio offers residual prevention of re growth like the manufacturers claim we did two roofs right next to each other , one with bio the other with hypo  the hypo one is still clean 12 months on but after 8 months the bio one has a green film of algi starting to grow again   When cleaning a roof with hypo it changes colour within one hour , with bio I find it takes months , Ime not recommending hypo and condemning bio but from my experience over 15 years hypo gives me better faster and longer lasting results, I know some won’t agree with this but it’s what I have found , talking to a great bio advocate he said bio should be applied annually to keep the growth from re forming , I feel this isn’t an option as bio products are very expensive  , legally the strongest mix you can use is 20-1 but talking to two bio suppliers they have said use it stronger 10-1 , I feel hypo would be better evan if you had to re apply it annually as it’s so cheap , I hate to say it but I feel hypo gives much better results although I don’t like using it .

[TomCrowther]

That’s interesting. I have used Algo Pro and know it keeps the regrowth down v well. A few roofs I have done just get better all the time! Literally years later.
Hypo is much much cheaper though and I guess on big jobs it’s a considerable saving on materials.

[james peters]

does hypo effect composite windows and doors?