Q: About algae on shingle roofs. ... Is there a best time or two during the year to apply a recommended cleaner with a garden sprayer? A: Although algae stains are unsightly, the stains do little to ...

QDEAR TIM: My roof needs cleaning. It's a newer asphalt shingle roof, but parts of it are covered with moss, lichens and algae. Is a pressure washer a good tool for cleaning roof shingles? Will it ...

Q: Lately I’ve noticed dark streaks on my roof shingles as well as other roofs in the neighborhood. The roof is about 12 years old and is in good condition. Can you tell me what the streaks are and if ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Lou Manfredini is joined by co-project ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Ryan Lindholm, Co-Owner, and Michael Huston, ...