U.S. Green Building Council Member


SEAL-ONCE® isn’t just good for the protection of your wood, concrete or masonry project; it’s good for the environment.

SEAL-ONCE offers an eco-friendly, and effective, way to protect your project from adverse weather and caustic conditions. Its proprietary nano-polymers stop water, mold and decay below the surface, protecting from the inside out.

When you use SEAL-ONCE, you have the satisfaction of knowing our products will not harm pets, plants, people, livestock or marine life.

SEAL-ONCE products are:

  • Water based
  • Non-toxic
  • Zero to low VOC
  • Low to no odor
  • Safe for application around pets, plants and people
  • Easy to clean up using only soap and water
  • Non-combustible
  • Non-flammable
  • Non-ozone depleting
  • Non-hazardous