Cleaning Moss and Lichen Off Your Roof (Without Wrecking It) -- Plus a Plain-English Guide to Urethane
Original Air Date: 8/1/2026 Episode Number: 470
Episode Summary
Three topics this week. Dan opens with a paint science segment answering a listener question about urethane and enamel -- two words that appear constantly on paint labels and mean different things than most people assume. Then a full two-segment deep dive on moss and lichen: first, how to safely remove them from different types of siding, and then a step-by-step walkthrough of how Dan cleaned his own roof, what products he used, and what the warnings are. He closes with a quick listener question about painting over old glossy…
The skinny
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