How long is to long?

Have been searching and can’t seem to find it, how long should I wait for the first rain after I leave the property, meaning if after a week and we haven’t had any rain should I go rinse it myself or is it ok to wait longer? Thanks

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If your referring to roof cleaning, no need to go back & rinse. The longer it stays on the roof the better. The sun will break down the mix & it won’t be as harmful.

John Devine. allwashedupny.com

As a rule we don’t rinse the roof. As John mentioned the longer it sits there the better. Having said this I’ve had eager homeowners/realtors tell me they want all the algae, moss and lichen gone immediately for an open house or private viewing. The algae is gone immediately but since moss and lichen is a rooted infestation it might take some arm twisting(heavy rinsing) to get it off right away. It justs amazes me sometimes that they let the roof get so bad then want it done yesterday. There is always an additional charge to mobilize a truck and crew to rinse the roof.

Hank

Thanks a lot guys, yes I didn’t know if no rain for a couple weeks would just make the mixture stay there and the stains not go anywhere, really appreciate y’all’s time this morning, have a wonderful weekend!

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All black algae stains should be gone before a contractor leaves. If there is dead(brownish) algae left over I’ll take the extra time and reapply while I’m up on the roof or on the ladder. I’d rather do this than have to mobilize a truck to reapply at a later date.

Hank

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How long is TOO long…

I’m sorry to break it to you but this is a pressure washing forum, not English class

Matthew Adkins
Adkins Cleaning Solutions
336-338-8705
Greensboro, Nc

“There is no greater impediment to the advancement of knowledge than the ambiguity of words.” - Thomas Reid (1710-1769), Scottish philosopher

I agree that the Gm should be dead and gone when we leave the first time. I tell my clients with lichen and moss it will take a couple HEAVY rains to remove that, though it too is dead. Its no coincidence that sometimes the areas with lichen are partially sheltered from the rain (in front of dormers for instance, or under eaves). In these situations sometimes all it takes is a 3 minute light scrub with a very soft bristled brush, no water hook up at all. In summary, the technical answer is there is no time limit, but a picky customer can change that.

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