Anyone on here know how it works? Do they rinse it off?

The website http://fohmer.com

Looks to me like he's using a power washer to DS the products.

 Now my next observation is from a biased viewpoint, I don't like foam on a roof, looks appealing,..but tends to trap the dead mold instead of letting it flow off with the mix.  I didn't even like the way this example looked on the siding. 

But he did say he was rinsing so the foam wouldn't be the problem it would be for me.

I think the use of the washers extra pressure is whats making the foam get churned up so thick,..not sure what he's using for the foaming,..so I can't determine that for a fact.

 I think the foam looks appealing and has good customer appeal,..but it's not needed,...and in this guys demonstration of DS'ing it simply wouldn't work.

So, buyer beware!

*On a side note,..there are many times I use my washer for DS'ing deck cleaner,...I think this type of foam could be beneficial on spindles,...but,..it's still not needed. Also what else is it gonna stick to when it's sprayed,..plants come to mind.

Jeff

Crud Cutter

The build