• altphoto@lemmy.today
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        11 days ago

        I have a pressure washer. Do you add anything else to it? I was thinking to add sodium Benzoate to the mix to prevent stuff from growing. Sodium Benzoate creates free radicals from UV but it also survives UV exposure.

        • fishy@lemmy.today
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          11 days ago

          They sell a powder for moss and algae. You just spread along the peaks of your roof prior to some rain and the rain will carry it into the growth. You can use a push broom pushing with the shingles for stubborn clumps. Using a pressure washer directly on your roof can cause issues, but if you’re intending to just use the pressure to shoot a liquid solution on from the ground it shouldn’t damage it, just wear a mask.