Concrete Knowledge

Protect Your Investment

A concrete project is not complete until all Six Steps to Quality Concrete are followed. The best way to protect your concrete investment is to be knowledgeable on its proper installation and aftercare.

There are six requirements to achieve quality exterior concrete flatwork. The contractor who places the concrete must follow the first five requirements. Make sure before the job is completed the fifth requirement is fulfilled– Proper Curing. This requirement includes the following: The concrete must be cured immediately after finishing! Curing greatly increases the strength and durability of the concrete surface and its resistance to freezing and thawing as well as de-icer salts.

  • Curing is a process where a satisfactory moisture content and temperature must be maintained for a 7 day minimum.
  • There are several methods of curing however the most common method is the use of a highest quality spray on curing compound applied at the manufacturer’s recommendation.

After the contractor applies a curing compound to the concrete, directly after the final finishing step, the number six requirement - Consumer Sealing and Aftercare should begin. Proper Sealing & Aftercare involves the following items:

  • Keep vehicles off of freshly placed concrete for at least 7 days.
  • Freshly placed concrete should be sealed after allowing a minimum of 30 days to air dry. Consider resealing aged concrete as wear in high traffic areas begins to show. Follow manufacturer’s recommendations.
  • The use of down spouts can help ensure that drain water does NOT undermine the slab which can cause settlement cracks.
  • Prevent snow and ice from accumulating on the concrete especially during the first winter.
  • NEVER allow the use of de-icing chemicals especially the first winter. Sand can always be used for traction.
  • Never use de-icers containing fertilizer ingredients such as ammonium sulfate, ammonium nitrate, calcium chloride and magnesium chloride. These chemicals WILL ATTACK AND DESTROY CONCRETE BY CHEMICAL REACTION. NEVER USE THESE PRODUCTS!

It is recommended that you seal your concrete every two to five years, preferably in September, depending on the type of product used. Concrete like any natural material must be protected against freeze-thaw cycles and chemical de-icers that are used. As the concrete sealer wears from year to year a new layer of water repellant sealer should be applied to increase the longevity of the concrete surface.