How to Clean and Prevent a Mossy Roof | Ask This Old House

A video on YouTube. In DIY & Home Repair, a Krater category.

Summary by Krater

An expert from Ask This Old House demonstrates how to remove moss from a roof and install zinc strips to prevent future growth.

From the video

Answers: How do you clean and prevent moss on a roof?

Shade and moisture promote moss growth on roofs, which shortens shingle lifespan by holding moisture and rotting the sheathing.
Installing zinc strips at the top of the roof allows rainwater to carry particulates that kill moss, lichen, and mold.
Washing the roof and surrounding plants before and after applying a bleach and water mixture prevents bleach damage to vegetation.

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