Quck answer
Copper stains can be removed using various methods. One option is to create a paste with equal parts vinegar and salt, apply it to the stain, and let it sit for a few hours before scrubbing it off. Another method is to mix lemon juice and baking soda to form a paste, apply it to the stain, and let it sit overnight before rinsing it off. For tougher stains, a mixture of hydrogen peroxide and cream of tartar can be applied and left for several hours before scrubbing. Always test these methods on a small, inconspicuous area before applying them to the entire stain.
Instead of appearing as a rusty brown color, copper stains actually create a turquoise blue-green discoloration on bathroom tubs and fixtures. If you discover copper stains on your bathroom fixtures, it’s likely that the water in your copper pipes has an incorrect pH level, being too acidic. This is not only harmful for human consumption, but also for your plumbing system. Before identifying the source of the copper staining, it is important to remove the stains using the appropriate method for your specific fixtures.
Fiberglass, Tile, and Cast-Iron Fixtures
Step 1
Prior to starting the cleaning process, dampen the stained area.
Step 2
Create a paste by mixing water with either oxalic acid, a chlorine-based cleanser, or cream of tartar.
Step 3
Apply the paste onto the stained area and allow it to sit for a minimum of five to 10 minutes.
Step 4
Scrub the stained area using an abrasive-backed sponge. Repeat this process as necessary until the stain is completely removed. Removing the blue-green stain from the fixture’s surface may require some effort.
Marble and Granite
Step 1
Thoroughly dry the marble or granite area.
Step 2
Combine enough household ammonia with either whiting powder or talc powder until the mixture has the consistency of peanut butter.
Step 3
Using a plastic scraper or spatula, apply the paste-like substance over the stain in a layer that is at least 1/4 to 1/2 inch thick.
Step 4
Cover the area with a plastic sheet and securely tape it around the edges. The plastic sheet should be larger than the pasted area.
Step 5
Allow the poultice to remain on the stain for 24 to 48 hours. The ammonia will draw out the discoloration and absorb it into the paste.
Step 6
Repeat this process as many times as necessary until the area is completely clean.
