Originally Posted by
Barry Grubb
This roof is 10 years old. It is not in the shade anytime during the day. The attic ventilation could be better but it does have decent vent.
Otherwise the shingles seem to be in good shape. Any suggestions?
I stayed in a Holiday Inn Express!!
2 things: there is a type of algae that grows on the north side of roofs. I see this a lot. I looked it up on the internet about a month ago. It's not much of an issue. The stuff at Home Depot probably works.
Also, are there pine trees anywhere around there? Turpentine is made from parts of pine trees. Here in east Texas (pine tree capital), the needles will stain if left on shingles for any length of time. My guess is that a little rain, a little sun, a little turpentine on the asphalt...voila...staining.
All of the above information has not been redeemed reliable by any socially-redeeming individual.
Bruce