Remove Black Stains On Roof

Luckily there are a few ways to successfully clean dark stains on wood.

Remove black stains on roof.

Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home. Thanks for all the helpful info on removing black roof stains. Remove black stains from roof shingles to preserve the appearance of your home s roof. The streaks look like mold but they re actually algae colonies that form in your shingles and feed on moisture and the limestone filler agents in the shingles.

We used a roof cleaning service called roof shampoo. It was like getting a new roof. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. These stains are soaked into the wood and need some special tricks to get them out.

While doing little harm to your shingles the black streaks caused by the algae are unsightly. It could take awhile but rest assured that lichen and most moss situations once dead will eventually dislodge and rinse off the roof thanks to mother nature. If you d like to you could also lighten wood with a dark stain finish on it. And they used a very low pressure.

The first stains usually appear on the north facing sides of a roof which receives less light and in. But over time black stains develop as some of the bacteria die off to create a dark tough protective outer coating. Tim asks how can i clean the black stains off my roof and keep them from coming back your stains are probably caused by the airborne spores of a blue green algae. These tips are.

These roof invaders require a moisture rich environment usually supplied by dew and shade. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. Read on to find out how to remove them. It is important that the roof be wet when the cleaning mixture is applied or it may evaporate before it has a chance to work.

Gravity pulls this coating down leaving black streaks on the impacted roof. Sam may 6 2012 at 9 08 am. The wrong way to remove black streaks from your roof. The algae feed on the limestone in shingles.

Unlike black algae stains which come off immediately with the rinse phase of the cleaning dead lichen and moss will require a few heavy rains to finish rinsing off the roof.