Stains On Roof Stacks

As far as snow just got it a few days ago and little to none last winter 10 inches total maybe.

Stains on roof stacks.

Roof vents are made from different materials. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home. Roof stains are not only unappealing to look at they also compromise the waterproofing ability of your shingles.

While doing little harm to your shingles the black streaks caused by the algae are unsightly. The remedies for and means of preventing stains on roof shingles are discussed as well. Your stains are probably caused by the airborne spores of a blue green algae known as gloeocapsa magma which is often mistaken for mold or mildew. Roof stains caused by fuel oil dye.

This algae growth usually begins as small spots and then eventually becomes visible streaks. The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor. Expect to see rust stains only around and below rusting metal components on a roof. Algae can be killed and the stains removed using chemical cleaners though they usually return over time.

It is not uncommon for roof shingles to turn black over time. 12 31 2012 04 08 pm 14. When that happens it is generally caused by mildew algae mold or dirt stains. The most common type is known as gloeocapsa magma also known as blue green algae.

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. Rust staining red or brown rust stains on asphalt roof shingles or on metal roof surfaces metal roof flashings metal chimneys antenna mounts or other metals that rust can stain roof surfaces a red or reddish brown color. Algae tree sap and leaves moss and many other materials get dropped or blown onto your roof. Roof leakage can often be seen as dark black stains concentrated and radiating out from one or more individual locations.

Valid point on upslope side of stack little or no stains showing there. But there are other roof stain colors and causes. View profile view forum posts. These are commonly seen underneath roof vents plumbing stacks vent hoods.