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Yes, you can seal old or existing concrete, but proper preparation is crucial. The concrete surface must be clean, dry, and free of any incompatible old sealant. To check if an old sealer is present, drip a few drops of water onto the surface; if the water is absorbed in under five minutes, it's ready to be resealed. If you plan to use the same type of sealer that was previously applied, you may not need to remove the old layer. However, if you are using a different type of sealer, the old one must be completely removed. Before applying the new sealer, thoroughly clean the concrete and repair or fill any cracks to ensure a smooth, well-prepared surface.

To improve the appearance of concrete steps, you can repair any damage, refresh the surface, and add decorative elements. For crumbling, chipping, or broken sections, consider concrete resurfacing or light repair. If the surface is intact but discolored, applying a coat of paint, stain, or concrete sealer can refresh its look; reapplying a sealer every one to two years is recommended for maintenance. For a quick enhancement, you can also add decorative items like potted plants, garden statues, lanterns, or decorative railings to spruce up the area.

Yes, you can seal an old concrete floor as long as you remove stains and repair damage before sealing. Remove everything from the garage and clear the floor throughout with a concrete cleaner and power washing. Fill in cracks larger than 1/8 of an inch wide and remove all grease and rust stains before sealing. Make sure your concrete is fully dried before applying sealer.

As with anything you buy, be wary of prices that seem too good to be true. Some low-cost flooring products can contain chemicals that release harmful VOCs (volatile organic compounds) in the form of fumes that can be inhaled or dust that can cause skin conditions.

Even good-quality products can be dangerous for DIY-ers who don’t take proper precautions. Always carefully read manufacturer instructions and wear the recommended protective gear when working with paints and other chemicals. You can also hire a local garage flooring pro with the experience and equipment needed to perform the installation safely with no lingering fumes or debris.