Although these dark spots and ugly black streaks on your roof may look like dirt mildew soot or mold what they really are is algae.
Grackle lining up stuff on roof.
It is less destructive if it gets broken up on the way down.
This algae growth usually begins as small spots and then eventually becomes visible streaks.
You ve probably seen them cleaning up leftover fries at a picnic table or making off with half a hotdog from an.
The most common type is known as gloeocapsa magma also known as blue green algae.
The common grackle is known to be extremely opportunistic.
Hand carrying obviously the cheapest but also the most physically taxing method is simply carrying the roofing materials by hand onto the roof.
Added on april 10 2017 the news wheel car cleaning car repair fabric car glue roof liner sagging.
Those little spikes are there to break up sheets of ice and snow that will be falling off the roof this season.
If the ice comes down in one solid sheet it is heavy and can damage property and hurt people.
The spikes break up the snow ice sheet as it falls past them.