Tannin Stain Tips

Professional landscapers spend much of their time beautifying peoples' homes and commercial properties. A critical part of maintaining these spaces is the removal of natural debris.

Every spring, we get several frustrated calls about brown stains on concrete paver patios. These almost always turn out to be tannin stains. Over the winter, it's very common for leaves, bark and other debris to pile up in corners and around furniture. This wet debris sits for long periods, allowing the tannins to leach, leaving dark stains on porous material, such as concrete.

Different stains require different solutions. Christensen's stocks several types of concrete cleaners. Contact the Hardscape Center to discuss which will address your specific issue.

The Pro's Secret:  Pool Shock (Yes, Really!)

For organic stains, such as tannins and mildew, your best bet is bleach - specifically sodium hypochlorite.  The easiest way to obtain that is pool shock.  You can find it at most hardware stores. It's cheap, strong and works fast. Many homeowners will already have the product, and you may be able to walk them through cleaning the patio themselves.