One of the questions that came up at the recent CEU presentation was, “what are the black streaks on my roof, and how do I get them off?”  The answer: algae. We ran across this answer in the local newspaper and found these facts interesting:

• once algae is in an area, it is carried from one roof to another and can infest the whole neighborhood
• there are no proven damaging effects of algae
• repeated cleaning/powerwashing can damage the roof and the color or life of the materials (but it will get the home presentation ready to sell)
• there is a prevention!!! a product can be installed between shingles on a new roof to protect against algae, stain, and discoloration

This entry was posted on Monday, June 18th, 2007 at 3:07 pm and is filed under Off the Wall, Taking Care of Business. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.