It s often labeled wood bleach but not all wood bleach contains oxalic acid so check the label.
How to remove stains from vinyl roof.
Rinse the section of the soffit you just scrubbed washing away all of the dirt and rinsing enough to clear the surface of detergent and bleach.
Use another microfibre cloth not the same one as before to wipe the ceiling interior again soak it lightly in warm water and wipe the roof lining in straight line motions removing the cleaning product.
As you move the cloth you ll see how it comes away covered in the dirt that was on the roof interior.
Rinse from the top of the roof down to avoid re staining the shingles with the dirty water.
You may have to leave the rag in place for an hour or so.
Wash away water stains water stains on vinyl tiles are one of the more stubborn stains you ll face but it s still possible to remove them.
Mix one part household bleach with four parts water soak a rag in it and lay the rag over the stain.
Fit a squeeze trigger nozzle onto the end of your garden hose turning it clockwise to tighten and turn the pressure on high.
A sponge or washcloth will easily be able to handle the task of wiping the vinyl clean.
Use your spray bottle to vigorously squirt cleaning solution onto your mildew stained vinyl.
Use the same diluted bleach and water solution that you would use to remove wine.
Set the nozzle at the highest pressure setting and hold it 12 inches from the shingles.
Once the mildew stains have been removed the smell of white wine vinegar will linger for several days so make sure your vinyl is placed in a well ventilated area.
Oxalic acid is the solution for stubborn rust stains.
Allow the oxygen bleach to sit on the shingles for 20 minutes.
Sodium hydroxide lye products on the other hand work better than bleach and are less harmful to vegetation.