How to Remove Rust Stains From Diamond Brite

Diamond Brite is a finish used on pools and other outdoor surfaces. The surface is composed of quartz and Portland cement, creating a hard and durable pool surface. Because the material is made with cement, the rust stains are handled similarly to how you would tackle a rust stain on your driveway or basement floor. Treating rust stains on the bottom of your pool is a slightly trickier problem. Always start with a natural, gentle method before moving on to harsh chemical cleaners. Drain the water to get to the stain. Consult the care and cleaning instructions for your pool for instructions on draining the water.

Remove rust stains from the bottom of your pool.

Step 1

Pour vinegar on the stain to completely cover the area. Choose either white or apple cider vinegar. Let the vinegar sit on the stain for 20 minutes.

Step 2

Repeat pouring vinegar on the stain and let it sit for another 20 minutes.

Step 3

Scrub the stain with a scrub brush. Choose a synthetic-bristled brush so you won’t scratch the Diamond Brite. Scrub vigorously in a back-and-forth and up-and-down motion.

Step 4

Rinse the vinegar from the Diamond Brite with clean water. If the vinegar did not remove the stain, proceed to Step 5.

Step 5

Put on rubber gloves. Pour an oxalic acid cleaner on an inconspicuous area of the Diamond Brite. Let the solution sit on the surface according to package directions. Check the area to make sure the acid did not damage the surface.

Step 6

Pour oxalic acid cleaner on the stain. Let the acid sit on the stain according to package directions.

Step 7

Scrub the stain with the scrub brush. Rinse the acid from the Diamond Brite surface, being careful to completely remove the acid. Use a wet-dry vacuum to remove all of the water.