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Bona R540 Moisture Barrier of Accessories

Bona R540 Moisture Barrier Accessories collection

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Our flooring accessories are available for pick up from our Blackburn showroom.  Delivery is available within 5km of Blackburn.

For large quantities or interstate delivery please contact us.

What is Bona R540 Moisture Barrier?

Bona R540 is a 1-component polyurethane resin moisture barrier and primer and designed for use on absorbent and non-absorbent sub-floors. Bona R540 can be used on floors with up to 95% moisture content in conjunction with Bona R848 & R820 silane adhesives.

Using a moisture barrier from the Bona system gives you peace of mind and ensures long term reliability.

About Bona R540

  • One component
  • Polyurethane resin
  • Primer for absorbent substrates
  • Easy to apply
  • Good adhesion
  • High penetration
  • Colour - Transparent Brown
  • Single pack ready-to-use with minimal wastage
  • 1 or 2 coat application – depending on the moisture content of the substrate

Where can Bona R540 be used?

  • Suitable substrates (also in association with underfloor heating) are: 
  • Cementitious screed
  • Concrete
  • Floors levelled with levelling compounds (at least 2 mm thick),
  • Particle board (yellow tongue, etc.) / plywood / etc. (as primer only)
  • The substrate must be even, dry to the touch, clean, free from cracks, and physically sound. The surface should also be slightly textured.

Technical Specifications

  • Pack size: 6kg
  • Coverage is 25 - 35 m2 depending upon the type of flooring and installation method
  • Density: 1.14 g /cm³ 
  • Overcoating: After approx. 3 - 4 hours a 2nd application may be made if required
  • Drying time: 24 hours; at this time timber may be installed using Bona R848T / R820 (At 20° C / 60% RH; High humidity and/or low temperatures will extend drying times)
  • Application tools: 6 mm nap roller or brush
  • Application rate:  Primer - approx. 100 - 150 g/m² (10 – 6.5 m² / kg) Moisture barrier - approx. 250 - 350 g/m² (4 – 2.75 m² / kg) NB. The coverage noted is per application and is dependent upon the porosity and physical condition of the substrate
  • Shelf life: Tub - 12 months in unopened original container


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