[Stephen burton]

What is the best chemical to use I have a customer who wants a roof cleaned which has very little moss but quite a bit of lichen backed on. Is soft wash a good method he doesn’t want it pressure washed, can I use my backpack and spray nozzle to cover the roof it’s not high and has the perfect pitched angle to do from the ground

[Smudger]

Cheapest and quickest will be hypo

Or if you want some pseudo green cred then pay out for algoclear - 10 times the cost and take weeks to kill off the lichen - but I will eventually get there

Backpack and spray trough your brunch you can agitate the surface at the same time for better effect

Darran

[Splash & dash]

Totally agree with Darren , bio is expensive and I dont feel it works any better than hypo , back pack and wfp with spray or brush is ideal fir applying hypo to roof I have made up my own spraying twin nozzle system to go on the pole it will go up and down the roof and sideways works a treat

[Stephen burton]

Cheers lads
Looks good that for a home made system, do you need to rinse the roof After?

[Splash & dash]

Yes we rinse after as you can get white salt deposits especially this time of year , but I know some that don’t bother

[Stephen burton]

Cheers splash and dash you rinse with pure? What should I be charging very roughly for this property exactly same at back

[Splash & dash]

Cheers splash and dash you rinse with pure? What should I be charging very roughly for this property exactly same at back

No rinse with Tap  water price wise Ime guessing a scrape and treat would be around £900-1200

[Stephen burton]

Thanks for that, one last thing where is the best place to get hypo from?

[Splash & dash]

Thanks for that, one last thing where is the best place to get hypo from?

Ime lucky there is a farm shop 300 yards from my house I get it there £12 for 20 ltr , but you should be able to get it from farm shops , swimming pool supplies firms , or look on line but some places are very expensive , also check  the strength of it most is either 10 or 15 % strength

[zesty]

You’ll defo need to agitate that lichen, it won’t come off with just a softwash...

[Splash & dash]

You’ll defo need to agitate that lichen, it won’t come off with just a softwash...

Generally speaking regardless what you use chemical wise it won’t come off straight away  Evan with a scrub most yellow/orange won’t come off but give it a few weeks or months and it will be totally free of it , but it does take time

[david mark]

I use to run a pool business in Florida for 20 years be careful how you transport hypo over  there it came in 2/1/2 Gallon jugs then we would put 12 jugs in a large plastic container to stop rusting the bed of our pick up trucks