Stains On Roof Stacks

Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them.

Stains on roof stacks.

Roof stains caused by fungus or algae can be prevented by applying a stain blocking agent. See below for a shopping list and tools subscribe to. If your household water pressure isn t enough to generate the proper nozzle pressure at the jets the manufacturer recommends boosting it. While doing little harm to your shingles the black streaks caused by the algae are unsightly.

Algae can be killed and the stains removed using chemical cleaners though they usually return over time. Rust staining red or brown rust stains on asphalt roof shingles or on metal roof surfaces. They may need to be applied more often in extremely damp and warm climates. Metal roof flashings metal chimneys antenna mounts or other metals that rust can stain roof surfaces a red or reddish brown color.

When that happens it is generally caused by mildew algae mold or dirt stains. Preserve the appearance of your roof by removing black stains promptly. These substances can infiltrate the limestone mixture that attaches the shingle to the roof and end up harming its ability to repel water. It is not uncommon for roof shingles to turn black over time.

This old house general contractor tom silva shows how to create a watertight seal around a vent pipe. 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 are not only unappealing to look at they also compromise the waterproofing ability of your shingles. Place the hose and drain tape at the edge of the roof near the ladder.

Dark black or brown roof shingle stains are often caused by black algae bleed through or extractive bleeding of asphalt dirt soot or organic debris. But there are other roof stain colors and causes. Algae tree sap and leaves moss and many other materials get dropped or blown onto your roof. These stain blocking agents can slow the formation of fungus and algae until the next application usually once per year.

Descend the ladder and stop when you are level with the. Expect to see rust stains only around and below rusting metal components on a roof. The first stains usually appear on the north facing sides of a roof which receives less light and in.