Bona R580 Moisture Barrier Sealer - 2.5 Gallon

Manufacturer: Bona
Product ID: BR580025US
QTY Add to cart

Bona® R580 moisture barrier sealer is a unique, single coat, fast setting, silane-based moisture barrier.

Bona R580 is a one component silane-based moisture barrier for securing damp sub floors. For faster bonding Bona R580 can be used as a two component system - just add water from the bag enclosed.

Bona® R580 moisture barrier sealer optimizes adheasion to, and provides a protective membrane over substrates where the moisture content exceeds 3 lbs or 75% relative humidity.1 It is a moisture cured, solvent and water free, silane-based compound. 

1 or 2-component system: 2-component system includes a catalyst to accelerate setting time.

Coverage Rate:

Trowel Notch Requirements: Bona Spreader Trowel 500F / 1/16” x 1/16” fine V-notch / 130 sq. ft/gallon. (Spread rate is approximate)

Easy application

Moisture barrier protection above 3 lbs or 75% relative humidity.

Very low VOC – meets the criteria for LEED EQc 4.1 (v. 2.1, 2.2, 3.0)

Single coat application


Easy tool clean-up

Use on concrete, cementitious or wood substrates where moisture is a known or potential issue;

where the moisture content is greater than 3 lbs (Calcium Chloride test) or 75% relative humidity

(RH probe test) but not greater than 12 lbs or 90% relative humidity.

  • Easy application and clean-up
  • Wipes clean with a cloth
  • One coat application
  • Quick dry times
  • 6 hours for 1 component
  • 4 hours for 2 component
  • Moisture barrier protection
  • Up to 12# or 90% RH
  • Solvent and water free
  • Self leveling
  • Low VOCs
  • No waste
  • Reseal with foil liner