3 ms·
As the article & comments say: dilute bleach and water; wait a week or two for algae, moss, etc to die; rinse off detritus, and add zinc strips to the roof to
by dmckeon 7y ago
As the article & comments say: dilute bleach and water;
wait a week or two for algae, moss, etc to die;
rinse off detritus, and add zinc strips to the roof
to inhibit future growth. Vary to protect nearby shrubs,
fish. etc. Never use more than low pressure. Move carefully, have adequate health insurance, or both.