How long a concrete surface will last largely depends on what measures you take to protect it after installation. That’s why many concrete suppliers offer sealants that should be applied periodically. To determine the best way to protect your investment, explore the answers to a few common queries about sealants.  

Concrete Sealant Questions Answered

Why does concrete need to be sealed?

Although durable, concrete is a porous material. This means rainwater can seep through it. During freezing and thawing cycles, water expands and contracts. This tension causes cracks to form in the concrete. Sealants provide a barrier to help the material repel moisture. Sealants also keep chemicals off surfaces to prevent staining and corrosion.

What kinds are available?

Made with silane, silicates, or siloxane, penetrating sealants are often used on exterior installations. When concrete absorbs the sealant, the chemicals coat the pores. This protects the material from the inside. Your concrete supplier may also have film-forming solutions that can be used to seal the surfaces. These water- or solvent-based sealants coat the top of concrete and provide a matte or shiny finish. 

When should sealant be applied?

When to apply sealant largely depends on which type you’re using. Penetrating sealers are often applied during concrete installation. The material just has to be hard enough that you won’t leave foot impressions while working. With epoxies and urethanes, it’s best to wait until the curing process is complete. 

How often should I reseal concrete?

As a general rule, concrete should be sealed every one to three years. Routine upkeep will help the current coating last longer. Wash down the surfaces with soap and water to remove grime buildup. If you use a glossy or semi-glossy sealant, routinely look for dull spots and touch up the areas accordingly.

For high-quality concrete sealants delivered to your home or construction site, contact Miller’s Ready Mix Concrete & Block in Gloversville, NY. For over 40 years, contractors and homeowners in Upstate New York have turned to these concrete suppliers for ready-mix materials, sealants, and masonry supplies. Visit them online to learn more about the services they provide, or call (518) 661-5601 to place an order. Check out merchandise alerts on Facebook.