READ THE INSTRUCTIONS!

[dave1949]

I was hoping it would remove the black streaks and some minor algae/moss on the roof but it didn't. Maybe its better geared for algae on the siding/fences.

Well, I am going to find out as soon as it gets warm enough for cold water spray to feel good.

 

[tallyho8]

I have some green algae on the north side of the house, vinyl siding. I think I will hose it down and use a brush on it first. Then after it has dried for a day or two, I'll spray the cleaner on.

All I ever use on my vinyl siding is a 50/50 mix of bleach and water. With light mildew or algae just let it sit a couple of minutes then hose it down. With heavy stubborn mildew or algae spray it, let it sit a few minutes, spray it again and then sweep it down with a wide push broom, then hose it off.

Mine always looks like new after.

PS. Vinyl siding instructions say to never use a pressure washer on it because water gets behind the siding causing more rot and mildew. Most people never read those instructions.

 

[dave1949]

All I ever use on my vinyl siding is a 50/50 mix of bleach and water. With light mildew or algae just let it sit a couple of minutes then hose it down. With heavy stubborn mildew or algae spray it, let it sit a few minutes, spray it again and then sweep it down with a wide push broom, then hose it off.

Mine always looks like new after.

PS. Vinyl siding instructions say to never use a pressure washer on it because water gets behind the siding causing more rot and mildew. Most people never read those instructions.

Thanks for the tips. I read on here a while back to not use a power washer on vinyl siding, which I probably would have without that advise , thanks to you, Eddie and others.

I will be using a garden hose with a light spray setting on the nozzle.

Part of Wet&Forget's claim is that it not only kills what is there, it prevents future growth. I don't take product claims as gospel, but thought I would give it a shot. The siding is going on seven years sold and I have never cleaned it. We only have about four algae growing months per year, so that is only 2.5 years in LA time. :laughing: