DIY Roof Wash

I have had good luck with Wet & Forget Stain Remover but my only issue was brown/black staining.

I watched a few videos the other day. Looks like a lot of pros use a 50/50 bleach/water mix. Is that what you used?

I’ve tried a few things from Home Depot and nothing seemed effective. I scrubbed a small area under a tree shade area with a brush and that helped a little. Too much to do the whole roof though. I know the commercial guys use something that will kill all your plants if they don’t cover them below the roof. My neighbor had this happen. I prefer something I can spray since I don’t want a pile of people stomping around on my roof. Next roof i get, I’ll have the Zinc strips installed at the top to kill the algae.

The key for a DIY soft wash mixture to match what the pros use is to add a surfactant to your mix. This is what causes the mixture to cling to your roof instead of just rolling back down and into your gutters.

So just google roof wash surfactant mixture for some ideas.