Learn How to Address Roof Algae with ARMA’s New Video

Many homes and steep-slope buildings have dark streaks or discoloration on their roofs, but it can be difficult for an owner to know what it is and what to do about it.

The Washington, D.C.-based Asphalt Roofing Manufacturers Association (ARMA) has produced a new, short, step-by-step animated video about roof algae for homeowners and building owners alike.

This video explains:

  • What are those dark streaks on my roof?
  • What is algae discoloration?
  • Will it damage my roof?
  • How do I lighten it?
  • Can I prevent it from growing?

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