The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"

hey mate...

cheers for the reply...

yeh mate its a lovely country, i love it....worth visiting...
i really want to visit america one time with my missus....would be a nice holiday, oh well, the more roofs i clean, the more i can holiday!!

mate im not settled on whether to leave this stuff or to remove it after the love is applied...

i havent really encountered lichen growth as yet so im unsure about what to do...what would you do with such a roof?? would you remove it or let time deal with it??

If the customer will spend the money,..and you can do it safely,..I'd remove it after killing it.

Lichen can be tough,...especially on shingles where there is no real choice but to only kill it and allow time to do it's thing. Forcibly removing it from shingles will pull granules off with it.

But, on tile you should be able to kill it and then physically remove by means of a washer.

I don't clean tile, but I'm familiar with lichen,...and you should be able to make these roofs look great.

That's definitely a lot of growth,...but you can handle it.
Jeff

Hi Caleb,

Great Pics, Thanks for sharing them. Until today I never have seen Australian Lichen or any Australian roof growth.

Pretty HEARTY stuff you grow there. In Oregon, there are lots of roofs with major moss, fungus, Gloeocapsa Magma Algae and it ALL grows BIG due to the moisture that prevails in the Pacific Northwest.

SH (Sodium Hypochlorite) can shock and release the grasp of most any root system on every roof plant I have ever tried it on, so, I would imagine if you take the advice given here, from our knowledgeable members, Jeff, Larry, and others, and try a 35% Apple Cider or Mike's Hard Apple Hybrid Solution, you will see impressive results and that will kill not only the roof plant you are concerned with doing away with AND it will kill your fears about the effects of using a formulation that has been FIELD TESTED on tens of THOUSANDS of roofs here in the USA.

Caleb, Do make sure you do first go out and apply a small batch in a pump up or back pack sprayer and apply to an inconspicous area.

Once you have proven to yourself, that LOVE is the Answer to all your roof cleaning problems, then,  DUDE, apply and spread the LOVE generously and get paid for it.

That looks some nasty stuff to deal with. Even if you shock and kill it it may have attached itself directly to the substrate. It might be like the 'feet' that vines attach to siding, brick etc Not impossible to remove, but very time consuming. Do you get the feeling that the customers want it off? Some of that stuff looks like its been there so long you have to wonder. Test one and see. I've dealt with heavy moss and if you don't remove it, the roof looks worse with dead brown moss than green moss. Waiting for rain to help out is a losing proposition in my humble opinion for this situation.

mate took the weekend off but am throwing some love on one of these roofs this week...

will keep posted