How to Seal Pet Stains on Concrete

Pet stains can leave an unpleasant odor in your home, even on concrete. Concrete is very porous, allowing urine and other stains to seep into the material and linger for months or even years. This is a common problem in areas where the stain has soaked down through a home's carpet and padding and into the concrete. Replacing the carpet alone will not eliminate the odor. The concrete itself must also be sealed to keep the odor from being released into the air.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• White vinegar Water Enzymatic cleaner (optional) Oil-based sealant Paint roller Roller pan

1. Use a mixture of two parts white vinegar and one part water to thoroughly clean the stained area of the concrete. If you are unsure exactly which spots are stained, shine a black light on the concrete to show the pet urine. You may also want to clean the entire slab of concrete to make sure all stains are removed. For an even more in-depth cleaning, use an enzymatic cleaner from the local veterinarian or pet store. These cleaners are designed to soak into the porous concrete and eliminate stains and odors below the surface. Allow all cleaners to dry completely before sealing the concrete.

2. Choose an oil-based sealant like Kilz paint or a similar product. If you do not want to cover the concrete with a colored paint, look for a clear sealant.

3. Apply one coat of the sealant with a paint roller. Make sure the entire surface is evenly covered and there are no lumps or pools of sealant. Allow the sealant to dry overnight, then apply a second coat to completely seal in any odor from the pet stains. Let the second coat of sealant dry for at least two days before allowing people to walk on the concrete.

Tips & Warnings

• If you are not covering the concrete with carpet or another flooring material, use a concrete sealant that is designated as an "anti-slip" surface. Sealants without this label may give you a slick surface when dry, making them a dangerous choice for areas where people will be walking.

References

• Eliminating Pet Stains
• Seal Cat Urine on Concrete