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Concrete sealers at-a-glance

Characteristics of concrete sealers vary depending on the specific formulation, but typically the following applies to these most commonly used concrete sealers:

Acrylic sealers

  • Film-forming
  • Typically UV stable
  • Solvent-based formulas have a glossy, colorenhancing sheen
  • Water-based formulas not as shiny, but sheen can be built up in layers
  • Can be tinted
  • Provide relatively good protection
  • Good adhesion to concrete
  • Easy to apply and repair
  • Inexpensive and easy to obtain


Epoxy sealers

  • Film-forming
  • Aesthetically very pleasing; available in colors
  • Glossy finish
  • More durable than acrylics
  • Excellent chemical resistance
  • Aromatic versions are not UV stable; aliphatic versions are UV stable
  • Requires careful preparation and application, but generally good bonding
  • Can be very expensive
     

Urethanes

  • Film-forming
  • Very glossy finish
  • Provides a hard, durable surface
  • Excellent chemical resistance
  • Aromatic versions are not UV stable; aliphatic versions are UV stable
  • May have bonding problems
  • More expensive than acrylics

Silanes/Siloxanes

  • Penetrating (reactive)
  • Don’t change surface appearance; no gloss
  • Excellent water repellency
  • Easy to apply
  • Twice as much as acrylics

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How to Use Concrete Sealers

How to use a concrete sealer and make sure it is the right sealer for the concrete job.Concrete is porous and it needs to breathe to let moisture escape. When applied at the manufacturer’s recommended rate, most concrete sealers will remain breathable. However, a blushing problem can occur when sealers are over-applied or reapplied too often. Blushing is a white film that forms when moisture is trapped between the concrete and the sealer.

Keep Concrete Work Beautiful by Choosing the Correct Concrete Sealer

Large concrete slab finished with blued color hardener and then sealed with the correct concrete sealer.Match the sealer to the job, and let your work shine! Concrete sealers help protect and beautify concrete work. But choosing the right one from a bewildering assortment of products is not always easy. Making the best selection depends on several factors: the application, desired aesthetics and maintenance requirements. Knowing the basics can help you make the right choice for each project.

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