They spray it on the roof and wait for it to dry and then re apply it several times as needed.
Sodium hydroxide based roof cleaning products.
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Sold over the counter it is one of the main ingredients found in oven cleaners dish washing liquid stain removers degreasers and deck cleaners as well as a host of other products.
Remember this unapproved roof cleaning chemical takes 30 minutes to work and if a spot is missed or the sodium hydroxide didn t take they must re apply the harmful roof cleaning chemical and then wait another 30 minutes.
These new roof cleaning chemicals and methods are nothing more than a rehash of the chemicals used when roof cleaning was in its infancy 20 years ago.
Often called oxygen bleach although it contains no bleach water activated roof wash ox is hydrogen peroxide based oxygen roof mold and algae cleaner that cleans using the power of oxygen for roof mold stain removal.
Some contractors still use sodium hydroxide one of the first chemicals found in roof cleaners.
Sodium hydroxide must be used carefully in order to not damage the roof or be harmful to any surrounding plants.
At that time lots of companies were using these sodium hydroxide based products.
However fewer and fewer of today s shingles are made with much asphalt.
This chemical is commonly used in products like drain cleaner and oven cleaner.
Roof cleaning contractors who use sodium hypochlorite chlorine bleach mix it in high concentrations with other chemicals such as trisodium phosphate also known as tsp.
Another great roof shingle cleaner is sodium hydroxide or better known as lye.
This product contains sodium hydroxide.
It should be diluted with water in order to breakdown the chemical elements.
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A few companies were advertising oxygen based roof cleaning but most were using the hydroxide.
Sodium hydroxide is a high alkaline product sometimes called lye or caustic soda.
Sodium hydroxide the strongest of the three can be used either as a mild cleaner or when mixed properly an aggressive stripping agent.