Oxalic acid is a wood bleaching agent that can be used to remove the stain.. Once the stain has dried, it can be sandblasted off of the surface of the concrete.
Repeat the process a second (and perhaps third) time to fully remove the stain. You can't scrub oil and grease stains away. The trick is to draw them up out of the concrete. To do this, mix trisodium phosphate (or a TSP substitute) with water and an absorbent material to make a smooth paste.
How to Remove Wood Stain From Concrete. Step 1 Blot up Stain. Blot up as much of the wood stain as possible with paper towels or old rags. Step 2 Apply the Absorbent. Step 3 Sweep Up Absorbent. Step 4 Apply Some Soap. Step 5 Soak Up Soap. Step 6 Mix a Poultice. Step 7 Apply the Poultice. Step 8 Remove the Poultice.
We'll show you how to remove old and new stains from concrete.. After the area is dry, scrape off peeling paint with a putty knife. Then apply the paint thinner .
Afterward, wood debris covered a portion of the patio. During the. How can the contractor remove the stain to satisfy the owner without replacing the concrete?