Any areas that have been missed may show up when the siding has dried.
Cleaning hardie board siding.
Always clean and rinse from the top of the siding to the bottom so that grime gets washed away instead of spread around on the siding.
If using a brush brush the siding s surface dust or dirt then rinse the area with a garden hose.
Don t let soap or cleansers dry on the siding.
Now you can clean away the dirt and lightly scrub the siding.
Do not allow the soap and mildew cleaner to dry on the siding continually rinse the area until all of the cleaner has washed off of the siding.
Do not push soft brush or wet cloth too hard against product surface.
From there rinse the area with clean water.
To complete the job you ll need the following items.
Be sure to completely rinse it free of any soap residue.
Use a side to side motion when cleaning horizontal planks.
If using a soft cloth wet the cloth then wipe the area in a side to side motion in the direction of the plank shingle or panel siding until clean.
In most cases this is the best method for cleaning your hardie board siding.
If cleaning panel direction of the siding is up and down.
A mild biodegradable soap dish soap is a good choice a soft brush or a cloth.
A little goes a long way.
Make sure to dilute any concentrated soaps like dish soap.
Take your soft brush and use it along the siding to remove the dust or chalk that you want to clean.
Start from the top and clean with the direction of the siding.
Pressure power washing.
Be sure to use a soap with no harsh chemicals as these can damage fiber cement siding.
Then rinse with the hose.
Gently clean the siding with the soft brush or wet soft cloth in a side to side motion in the direction of the plank siding.
Regularly rinse out the cloth or sponge as you work to avoid spreading any grime around on the siding.