Instead use a wood bleach containing a 5 percent oxalic acid solution to remove the stains.
How to strip exterior stained house cedar siding.
You need a garden pump sprayer and a scrub brush.
You let the oxy bleach solution set on the wood for about 15 minutes and then scrub it off cleaning restoring wood siding.
Remove the existing finish with a power sander and 220 grit sandpaper.
Mix the cleaner according to the instruction and apply it to the stained cedar siding with a brush or roller.
The fastest easiest way to strip your siding is to spray on a deck stripper product your choice of many from hd etc buy a small amount and test it on a small area different strippers work better or worse on different finishes although all purport to be excellent on everything you will find.
If the siding was not sealed with a glossy lacquer or varnish as is the case with most siding the process is fairly straightforward.
Wash the siding thoroughly using a dilution of detergent and.
Removal can be done with a commercial mildew remover or with dilute solutions of liquid household oxygen based bleach followed by thorough rinsing with clean water.
Clean the siding with a mixture of 1 part bleach and 4 parts water.
Do not let it dry.
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Repeat until you have a final product you are happy with.
Then we used wolman s deck brite to clean it to get rid of the dark stains left by the mold.
You ll want to leave the cleaner on for at least 15 minutes up to 30 minutes to ensure that it removes the old coating.
Oxalic acid is toxic so keep pets and young children away while you use it.
Dip your application instrument into the bleach and allow it drip off the excess before using it on the item you want to remove the exterior wood stain from.
After these preparations scrub the surface with a stiff bristle not wire brush and water and rinse with clean water.
Apply the bleach in a thin coat and remove with a wet towel.
Wash the entire surface with a dampened cloth removing any traces of.
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How to restain cedar siding.
Wear protective clothing.
For high areas use an extension on the roller or climb a ladder and use your paintbrush.