Does roof cleaning really work?

How to Clean Your Roof with Roof Wash. Use Roof Wash to remove stains caused by moss, black algae, mold, lichen or any fungus that may grow on roofs. It’s highly effective on all types of roofing material: asphalt, metal, tile, wood shake, rubber and new composite materials.

Is it a good idea to have your roof cleaned?

Cleaning a roof is a lot cheaper than a full or even partial roof replacement which of course is costly. The longer you leave moss and algae on your roof, the more damage will be caused. We advise people to have their roof cleaned sooner rather than later when moss build up is noticed.

Does cleaning roof extend life?

A proper roof cleaning will allow the homeowner to maximize their shingle life for up to 20 to 25 years, or more. Roof Cleaning is now an accepted part of home exterior maintenance.”

What do roof cleaners do?

Roof cleaning is the process of removing algae, mold, mildew, lichen and moss from roofs. Also cleaning oxidation on metal roofs. Cleaning can extend the duration of a roof’s ability to function. … The addition of zinc strips near the roof’s peak may reduce the regrowth of algae and moss.

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Can I clean my roof myself?

While technically you can clean your own roof, it’s not recommended. From personal injury to property damage, there are plenty of compelling reasons to leave roof cleaning to the professionals. Before you go grab your ladder and head out on the roof, consider why cleaning your own roof might not be a great idea.

What do professional roof cleaners use?

The most popular chemical used today by roof cleaners is still “bleach” or sodium hypochlorite. It is also the chemical of choice of ARMA, the Asphalt Roofing Manufacturers Association.

Is Power Washing bad for your roof?

Using a high powered pressure washer could cause more damage than good, because the strength of the water stream can remove the finish of the roof tiles. … Additionally, there is a risk of flooding the roof/loft space when using a pressure washer, as the water will enter any small cracks or gaps in the roof tiles.

How often should I pressure wash my roof?

Don’t excessively clean your roof, as it’ll add more wear and tear. Only do this as needed. You shouldn’t have to pressure wash your roof any more than once every year or two at most.

How often do you need to clean your roof?

Generally, it is a good idea to get your roof cleaned by professionals once a year. This is often enough to where if problems develop, they can be caught early on. If you have a roof that is in good shape or was just recently installed, then you may only need a roof cleaning once every two years or so.

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How do professionals clean roofs?

There are a couple of different ways of getting a roof cleaned thoroughly and professionally:

  1. The first one is to use a scraper and brush to manually get rid of the dirt and the other unwanted stuff that has built up over time.
  2. Another roof cleaning approach is to use a power pressure washer on the roof.


What time of year should you clean your roof?

The best time of the year to clean the roof is summer. Summer months provide ample amounts of sunlight and typically there is no rain or snow. With a dry surface to walk on, summer months are safer. Of course, the best decision you can make is to call on a professional for your roof maintenance.

Should you clean moss off your roof?

To avoid expensive repairs, moss should be removed from your roof tiles quickly if it is covering a significant area of your roof. Avoid pressure washing your roof to remove moss, as this could cause damage to the tiles and lead to the drenching of your roof interior.

How can I make my roof last longer?

5 Ways to Help Your Roof Last Longer

  1. Avoid Power-Washing Shingles. Concentrated spray can loosen the granules from the products’ top coating—and resulting damage might not be covered by the warranty. …
  2. Check the Ventilation. …
  3. Clean Gutters Regularly. …
  4. Insulate Attics and Cathedral Ceilings Properly. …
  5. Fortify the Roof.


What is the black stuff on my roof?

The black streaks running down roofs are actually a hardy algae called Gloeocapsa magma. As the blue-green algae accumulate, they develop a dark, hardened outer coating, which results in the black stains you see. The algae feed on the limestone in shingles.

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What kills moss on roofs?

The most effective method of cleaning algae and moss from a roof is with a 50:50 mix of laundry strength liquid chlorine bleach and water. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes, and then rinse thoroughly with low pressure water.

Roofs and roofing