Rust Spots On Basement Concrete Walls

You can re treat the area as needed for stubborn stains.

Rust spots on basement concrete walls.

The white and gray stains shown on the poured concrete basement wall at left are due to water and moisture seeping through the wall at concrete form ties that were not adequately sealed on the wall exterior after initial construction. In some cases priming is not required. We find these stains on concrete block or cinder block chimneys as well and occasionally on stone chimneys. To clean a concrete patio of regular grime or to eliminate a rust stain pour the acidic product over the rust and allow it to sit for at least 15 minutes to allow the acid to penetrate and dissolve the rust.

Use it on rust stained concrete and tools also works on calcium and lime stains. Brown stains leaking out of any chimney photo above right whether masonry or metal may indicate a dangerous condition prompt inspection is needed. Minor rust stains may be dissolved by rust removing chemicals. 1 8 my concrete slab got rust stains on it because the lawn sprinklers were fed from a well that was full of iron.

Decorative concrete stains can work with the rust stains you have to create variegated designs that resemble stone. You said you haven t had water leakage into the basement for years but the stains are likely caused by salts contained in the soil or masonry dissolving in water and migrating through the concrete. Using a pressure washer rinse the natural rust remover off the concrete and enjoy a rust free patio. Spray on and stains disappear.

The goof off outdoor rust and iron stain remover dissolve rust stains on contact. The most common way to remove discoloration caused by water is to use a heated pressure washer or acid rinse. Brown stains on a chimney wall may also show up indoors or outside photo above right. Therefore the first step to correct any type of basement wall stain problem is to provide adequate foundation drainage in order to minimize the water infiltration.

When used as directed rust aid is safe around pets and plants. If water has a high iron or mineral content or if the water is carrying leaves or dirt it can leave behind iron or rust colored stains or dark spots on the concrete. The dos and don ts of waterproofing basement walls troubleshoot the causes and find the solutions to wet basement walls the sooner the better to maintain the integrity of your home.