Asbestos is in fact not hazardous when wet
However, I suspect it's old enough to consider great care when PWing (as not to damage it)
I'd consider using one of the newer "eco-friendly/oxy" type mold/mildew/fungus removers
Technically not mildecides, as they don't "kill" mold, they do however make the roots of the mold (mildew, fungus) release from what they are clinging to (which even a mildecide or bleach doesn't do)
This allows the mold/mildew to be rinsed off with much less pressure (even a good garden hose spray may work well depending)
Though I can't say from personal (professional) experience (there are maybe 3 buildings with asbestos siding out here on Cape Cod, "The Land Of Rust And Mildew"), I'd absolutely try the Wash-Safe (made in my hometown...no I don't get a cut of sales, but have used it extensively on siding and roofs...who would know more about mold removal than a Cape Cod Company?...not many!...lol), or similar product, allow it to dwell (soak) properly, and use a light PW or hose to rinse it off
I'd opt for the "roof wash" product and mixture rather than the "siding" though
"Siding" out here usually means clapboards or shingles
A scrub while wet may be needed for some real tenacious mold
Although effective, the big benefit is that it is very eco-friendly compared to bleach or other mildecides
However, I suspect it's old enough to consider great care when PWing (as not to damage it)
I'd consider using one of the newer "eco-friendly/oxy" type mold/mildew/fungus removers
Technically not mildecides, as they don't "kill" mold, they do however make the roots of the mold (mildew, fungus) release from what they are clinging to (which even a mildecide or bleach doesn't do)
This allows the mold/mildew to be rinsed off with much less pressure (even a good garden hose spray may work well depending)
Though I can't say from personal (professional) experience (there are maybe 3 buildings with asbestos siding out here on Cape Cod, "The Land Of Rust And Mildew"), I'd absolutely try the Wash-Safe (made in my hometown...no I don't get a cut of sales, but have used it extensively on siding and roofs...who would know more about mold removal than a Cape Cod Company?...not many!...lol), or similar product, allow it to dwell (soak) properly, and use a light PW or hose to rinse it off
I'd opt for the "roof wash" product and mixture rather than the "siding" though
"Siding" out here usually means clapboards or shingles
A scrub while wet may be needed for some real tenacious mold
Although effective, the big benefit is that it is very eco-friendly compared to bleach or other mildecides
