Almost all roof stains are caused by algae growth that contains molds, lichen colonies, fungus, or moss that feeds on the organic material that is often found in the mineral-based granules that are used in roof shingles, usually limestone. These roof staining organisms feed on this organic material. In other words, they’re eating your roof, literally. The areas of your roof that will be attacked more are those that don’t get a lot of sunlight. These are the areas you’ll find algae, lichen colonies or moss growth. Most homes with these stains will have them on the northern and/or western side of the roof or areas that receive lots of shade.

Green Algae on Roof

Algae lives and thrives on pollen, dust and the organic material that roofs are made up of. The number one trigger for algae growth is dampness. Algae will grow on, under and behind the tiny granules that cover shingles. These can harbor lots of different molds. These stains are ugly and will leave streaks on the roof. As algae grows, they retain water and foster the growth of other organisms. These algae stained roofs also absorb heat instead of reflecting it. This will make attics hotter and will increase cooling costs. This effect will also shorten the life span of the shingles on your roof.

Lichen Colonies on Roof

Lichens grow with algae and together will create an organism that forms a crust-like or branching growth on the granules of shingles. Lichens produce root-like tentacles that get deep into the shingles. Shingles have an oil-base that becomes ruined and causes them to develop dark spots or pock marks where the colonies grow.

Moss on Roof

Moss is a thick growth with shallow roots and will keep the roof damp for long periods of time. This moisture can make wood rot conditions ideal and will erode shingles. Most moss will start to grow on the top of the vertical slots between the shingles because these are the areas where water is last to evaporate. Some of these mosses can cause a lot of damage to shingles and can erode them.

Soft Wash Roof Cleaning

These stains are alive and will continue to grow unless they’re taken care of. This is where soft wash roof cleaning comes in. Soft wash roof cleaning = low pressure rinse with cleaners. A pressure washer will be used to get a consistent working pressure on the roof. This is a pressure of 150-200psi, nothing crazy like 3000psi, just a nice working pressure. The term soft wash comes from the idea that a sensible amount of pressure will be used to clean your roof without damaging the shingles or roof tiles. Using your garden hose at roof level will only output no more than 65psi and nothing higher than a 10psi with a fan spray. This makes doing it yourself pretty much useless.

Soft Wash Roof Cleaning & More in Lehigh Acres, Cape Coral, Fort Myers Florida

Don’t ignore roof stains. Doing so can make your home look dirty and cause damage. Routine cleaning makes sense when you think about the cost of roof repair. Hire a company that will prevent costly roof repairs and make your home look great. Contact AA Top to Bottom Cleaning & Home Repair today!