ACRYLIC POLY Premium Wood Sealer

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SEAL-ONCE® ACRYLIC POLY Premium Wood Sealer shields wood from water damage and decay by forming a durable coating on the wood’s surface. Its enhanced UV inhibitors and superior abrasion resistance offer additional protection against the elements.

The long-lasting, low VOC, water based polyurethane of our ACRYLIC POLY protects wood from weathering, scuffs and scratches, in addition to preventing wood rot and decay by impeding water intrusion. It also stabilizes the wood, eliminating warping and cupping caused by water intrusion.

The UV inhibitors in our ACRYLIC POLY prevent the natural color of the wood, and our Semi-Transparent Tints, from fading. It also prohibits stains caused by mold, mildew, algae and fungi.

SEAL-ONCE ACRYLIC POLY is a water based, low-VOC, non-toxic, low odor formula that can be applied around landscaping, vegetation or water without causing damage.

Recommended Use:
Decks Railings Wood Siding Log Homes Fences Outdoor Furniture Planters Play Structures Cedar Shake Shingles and Siding




Product Details

  • Eco-friendly
  • Low VOCs
  • Non-toxic; will not harm pets, plants or marine life
  • Superior abrasion resistance
  • UV inhibitors prevent color from fading
  • Flexible barrier expands and contracts with wood through changes in temperature and humidity
  • Prevents mold, mildew, fungi & algae staining
  • Stabilizes and protects wood
  • Prevents warping, cupping, wood rot & decay
  • Soap & water clean-up


  • All surfaces should be cleaned before sealing for best penetration and performance.
  • Clean all dust, debris and loose material. Remove oil, grease, algae, grime, mill glaze and mold and mildew stains with appropriate cleaners. Recommend SEAL-ONCE All Wood Cleaner.
  • Test absorbency after cleaning by sprinkling water on surface. If the water does not readily penetrate the surface, stripping will be necessary to remove old coatings.
  • Do not use if air or surface temperature is below 50°F/10°C or above 95°F/35°C.
  • Do not apply in rain or when rain is imminent.
  • DO NOT THIN. Mix well. Stir contents or shake thoroughly prior to use.
  • Apply first coat with a brush, pump-up garden sprayer, air-assisted and/or airless sprayer. Use 17-19 tip and medium to coarse spray pattern. Brush out any puddles.
  • Allow first coat to dry completely before applying a second coat. First coat should be dry within 1-2 hours.
  • Apply second coat following the same instructions as for the first coat.
  • For best results, apply in the shade and out of direct sunlight.
  • Apply to all surfaces, including wood ends.
  • Do not use with other waterproofing products.


  • Allow approximately 3-4 hours, depending on temperature and humidity, before subjecting to light foot traffic.
  • Allow 24-48 hours for full cure, depending on temperature and humidity.
  • When applying second coat, ensure first coat has dried completely and is dry to the touch. Allow approximately 1-2 hours before second coat.
  • Clean sprayer equipment and brushes with warm soapy water.
  • Disposal: soap and water clean-up; no special disposal procedure needed.


Surfaces that have been treated with SEAL-ONCE ACRYLIC POLY can be cleaned using a mixture of 1 gallon warm water, 14 oz. bleach, and 1 oz. of Dawn® dish detergent. Apply this cleaning solution with a sprayer and allow to sit for 20 to 30 minutes on the wood surface before rinsing with water using a garden hose with a nozzle.

This cleaning solution can be used to remove airborne mold and mildew stains, dirt and grime from the wood surface. SEAL-ONCE ACRYLIC POLY will prevent and resist any water, mold and mildew penetration. Do not use oxidizers, corrosives, or strippers on surfaces that have been treated with SEAL-ONCE ACRYLIC POLY.