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