Cleaning is only effective if you scrub the solution while it s still moist.
Sodium percarbonate roof cleaning recipe.
But once in a while it just gets way to hot.
But sodium hydroxide is a fine product to use for cleaning tile concrete or slate roof materials.
So you would wet down all plants and then rinse them again once you re done cleaning the roof.
I like to mix up a gallon or so at a time in a 5 gallon utility pail.
For larger areas use the ratio of 1 2 cup of sodium percarbonate for every quart of water.
Sodium percarbonate is good for cleaning decks and fences.
We clean roofs all day long.
Sodium percarbonate is great for applications with hot water such as mixed into the soap solution in a carpet cleaning machine or mixed with hot water to mop the floor.
Sodium percarbonate based cleaner comes as a dry powder that is mixed with water before use.
The problem with sodium hydroxide is that if it is not completely removed from the surface even after it has dried it can be activated again and once wet continues its normal chemical reaction on petroleum based products.
All the black dead stuff just starts foaming and boiling out on verticles good stuff but hey be careful if ya use the borax as it is of course a toxin and can be dangerous to plants insects animals and humans.
Each quart of sodium percarbonate and water solution will clean about 16 square feet of deck surface.
You are just spinning your wheels trying to get the job done.
Sodium percarbonate is really easy to use for cleaning stain removal and laundry.
Oxygen bleach cleaning tips and formulas i ve went up to about 12 oz per gal.
To clean a roof without destroying the integrity of the shingles you need sh and a surfactant with no pressure.
Most products come with a chart that shows how much to use.
One is the guy on the roof spraying cleaning the roof and the other ones job is to spray everything and anything that could get over sprayed with the roof cleaner.
Along with upwards of a cup each of the tsp and borax.
I then transfer the solution to a garden pump sprayer to apply it to the deck surface.
Don t allow the solution to dry on the deck surface.