Roof Cleaning – The Right Way

Chemical roof cleaning is a superior alternative to roof power washing, as you might already know. There are numerous roof cleaning products and solutions on the market today, all claiming to be superior and claiming that theirs is the best and most successful, but it’s important to remember that these are for-profit businesses that will say anything to sell their product.Do you want to learn more? Visit roofing contractor in Houston, TX

There is only one way to clean a roof properly, in my opinion, and that is with a sodium hypochlorite-based solution. The active ingredient in bleach and chlorine is sodium hypochlorite, which, when applied to a roof in the proper proportions, is the best and most effective way to clean a roof. The Asphalt Roofing Manufacturers Association (ARMA) and GAF (North America’s largest shingle manufacturer) both suggest this method for cleaning roofs.

The ARMA recommends a combination of bleach, water, and TSP (available at paint stores), but be cautious when using TSP on painted surfaces since large doses may strip the gloss. TSP is helpful but not sufficient, in my experience, because bleach is the primary cleaning agent. Furthermore, of roof cleaning professional who uses this method has his or her own “secret” additives that they add to this mix to give it just the right cleaning potency for their environment, but the common denominator is a final liquid solution containing around 3-4 percent sodium hypochlorite. If your household bleach is about 6%, you’ll need to dilute it with equal parts bleach and water to get it down to 3%.

This is by far the easiest and most reliable way to clean a roof, but it will take anywhere from 30 to 60 gallons of total mix to clean a typical one-story ranch house. That means 15-30 gallons of standard 6 percent household bleach will be needed. Typically, the pros would keep the whole mixture in a wide poly tank on their truck or trailer and use a battery-powered pump to deliver the solution up to the roof surface through a long polybraided hose. On the end of the hose, they’ll normally have a bleach-resistant tip that uniformly disperses a gentle spray across the roof surface. They’ll leave the solution on the surface for a few minutes to do its work before rinsing it with water from the garden hose. As a result, there should be no need for power washers or scrubbing (the only exception could be for thick moss accumulations).