Oxalic Acid Roof Shingles

Apply a 5 oxalic acid solution on your roof.

Oxalic acid roof shingles.

Quote i have had luck with oxalic. Be very careful using oxalic acid as it is a toxic substance. Mix the acid which comes in powdered form and water in the pump sprayer. Oxalic acid 99 2 lb bag c2h2o4 i tried vinegar clr everything else.

Cedar shingles that are left unstained will eventually become silvery gray in color and may also be prone to tannin stains. I already contemplated on replacing my roof shingles. You cedar as much as we do. I have never had any issues with the acid damaging the shingles so i have gone pretty heavy when needed.

Since every manufacturer is slightly different refer to the instructions on the package for specific diluting instructions. Clean off your roof. After application of these products the wood should be thoroughly washed with clean water and allowed to dry completely before finishing. What strength did you use.

In the end you ll have shingles that appear brighter. First scrape away all loose cracked or peeling finish. Oxalic acid based products remove extractives bleed and might help diminish iron stains but are not effective against mildew. This solution will help neutralize the blue black stain that occurs on shingles overtime.

Put on your gloves and wear your goggles again. Wood when exposed to the elements can turn gray. Treat the rust stains with vinegar. Katie stewart a consumer care representative suggested using lemon juice and baking soda or baking soda alone or bar keepers friend a powdered cleaner that contains oxalic acid.

When oxalic acid is applied on an old and graying wood floor it brings back the wood floor s natural white color. This will help you identify the source of the rust stains usually metal nails holding the shingles in place and also remove any additional dirt and grime that makes rust removal more difficult. Should water staining be evident scrubbing the wood with an oxalic acid solution can be effective for removal. This product is a life saver.

I tried oxalic on one and it didn 039 t do anything. Tackle tough rust stains with oxalic acid. Actually this acid is often used when preparing to stain old wood floors. I have sprinkled it on lightly misted with a pump up or wet the brush and agitated.

Tackle tough rust stains with oxalic acid.