What do professional roof cleaners use?

Sodium hypochlorite (bleach) Referred to as SH for short, household bleach is the most commonly used roofing cleaning chemical, as it is the preferred cleaning agent of almost all pressure washing companies in North America. Chemical-based cleaners often use chemicals such as ammonia, copper sulfate and trisodium phosphate.

What do professional roof cleaners use?

Sodium hypochlorite (bleach) Referred to as SH for short, household bleach is the most commonly used roofing cleaning chemical, as it is the preferred cleaning agent of almost all pressure washing companies in North America. Chemical-based cleaners often use chemicals such as ammonia, copper sulfate and trisodium phosphate. They can be aggressive, but are extremely effective in removing stains, as well as the mold, algae and mosses that cause them. Simply diluting them in the manufacturer's recommended mixture reduces part of the risk, so read the instructions carefully.

No roof cleaning company should use high-pressure washes. Full pressure washing is ideal for some occasions, but the roof is designed to protect you from natural rain, not a high-power hose. Unfortunately, many companies do not have the knowledge or equipment to provide a gentle, safe and effective wash. At Keystone Pressure Washing and Roof Cleaning, we never apply high-pressure washes to the ceiling.

We use a blend of highly effective and environmentally safe detergents and a “gentle wash”. It is effective enough to clean, but gentle enough to maintain the integrity of the roof. We have introduced the idea of using sodium hypochlorite as the base of its formula. In reality, many different chemicals have been widely used to clean ceilings.

In addition to bleach, sodium hydroxide, potassium hydroxide, calcium chloride and percarbonate cleaners are commonly used. None of these cleaners are as aggressive (or as corrosive) as bleach. We introduced some elements of roof cleaning in a blog post about the basics of building for roof cleaning, such as the idea that you can walk on the roof during the cleaning process. If the angle of the ceiling is not too steep and you are comfortable working up there, you can try to remove stains from the ceiling yourself.

When various types of organisms that stain roofs, such as moss, algae and lichens, may have reached the shingles. There are several factors to consider when buying the right roof cleaner, from the roof surface itself to the specific dirt issues faced by homeowners. These formulas can also be harmful to plants, although generally to a lesser extent than bleach-based cleaners. Eco-friendly cleaners tend to use oxygen to break down the dirt and mold and algae that roofs love, so they work best with a little agitation.

I learn many benefits of pressure washing cleaning for my ceiling. I would hire a contractor near my area in Waltham, MA to do a regular cleaning of my house soon. Spray bottles can be easy to use, but they can make it difficult to cover a large area, so they're ideal for smaller ceilings. The stains on the shingles were successfully removed, but stronger and more resistant residues, such as some algae or moss, were a little more difficult to remove.

Whichever method you choose to remove stains from the ceiling, keep in mind that roofing is a hazardous job with a high accident rate. This may allow the product to work better to help stop ceiling growth and possibly remove more stains on the ceiling. If you think you can't keep up with what it takes to maintain your roof and remove black stripes from algae, consider switching to algae-resistant shingles, which cost 10 to 20% more than untreated roofing materials. One thing I really learned was how you mention that cleaners use a high pressure per square inch (psi) of water to remove all traces of persistent chemical residue that may have stuck to the roof surface.

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Darla Nakama
Darla Nakama

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