Concrete Countertops

Some may think that concrete has just recently become a popular material for countertops, but the truth is, its long been popular.  In recent years, structurally sounder and lighter-weight concrete has appeared on the market, which has increased the popularity of concrete countertops.  One such type of concrete is GFRC, which is Glass-fiber reinforced concrete.

GFRC is extremely strong Portland cement composite that has been infused with glass fibers that reinforce the concrete.  The glass fibers also help to increase the load-bearing capacity of the concrete.  In addition, GFRC is also environmentally friendly.

The glass fibers in GFRC come from reclaimed or recycled materials.  In addition, when a kitchen countertop is fashioned, every ounce of GFRC concrete is used and the finishes used are water-based materials, producing no pollutants or toxins.  This makes GFRC even more environmentally friendly.

Concrete countertops do have some disadvantages, one being that they are manufactured by approximately three or four major companies, and by slightly more, smaller fabricators that are scattered throughout the country.  Another disadvantages, which could have grave repercussions is that there are no industry-wide standards.  This means that there can be, and often are variations between fabricators. 

Other disadvantages are that concrete countertops over time can develop tiny hairline cracks.  Some owners find these small cracks disconcerting.  However, these cracks do not affect the durability or structural integrity of the concrete.  Concrete is also porous, which means that it will stain.  Concrete can be sealed with an epoxy.  However, this will give a plastic finish to the surface.  Most concrete countertop fabricators suggest that you seal the surface with two or three coats of a penetrating sealer.  This will make the concrete stain resistant.  Once you have applied the penetrating sealant, two or three coats of wax should also be applied, and then the surface should be waxed approximately every six to eight months to maintain the shiny matt finish and the counter must be resealed about every two years.

Concrete countertops can scratch, so we strongly recommend that you use a cutting board, in addition acidic foods such as critic juices, mustard, vinegar, etc. will etch the surface if they are not cleaned up promptly.  Oils that are not cleaned up will stain.