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Partel Products VARA FLUID Brush - Fluid applied membrane

VARA FLUID Brush - Fluid applied membrane

Paint-on Airtight, Smart Vapour Control Layer

Partel VARA FLUID Brush is a breathable liquid membrane engineered to provide superior airtightness for long-term performance of the building envelope.

A+ EC1 PLUS wtcb Guaranteed Irish Variable Technology

Vara Fluid Brush is a water-based air & vapour control layer (AVCL) that can be brushed, providing a continuous airtightness over cracks and gaps in both new build and retrofit projects.


  • Permeable to water vapour. Provides superior protection, allowing vapour to escape and dry the structure.
  • Excellent adhesion on various surfaces - masonry, concrete, silicate stone, OSB, plywood etc.
  • Single component - Ready-to-use, fast application
  • Flexible, ensures adequate coverage (cracks and joints up to 2 mm) due to fluid applied installation
  • Durable airtight connections; Once the layer is dry, it results in a durable, elastic membrane that maintains the integrity of connections over the long term, in any type of building
  • Brush applied, no need for primer
  • LOW VOC polymer-based liquid
  • Excellent Water Resistance
  • Turns dark beige when dried


VARA FLUID BRISH can be applied both vertically and horizontally, it's easy to apply with a paintbrush and dries to an airtight flexible coating.

  • Internal and external use
  • Wall to floor
  • Wall to ceiling
  • Window & door jambs
  • Pipe and ducting penetrations
  • General construction joints
  • Video
  • Documents