Raso Top Bio Base Coat/Adhesive

  • Lime based adhesive/base coat
  • Suitable for interior and exterior use
  • Easy workability
  • surface straightening
  • High breathability
  • Excellent adhesion
  • Suitable for historical buildings


Raso Top Bio is a biocompatible skim coating/adhesive, certified as GP mortar in accordance with the UNI EN 998-1standard, specifically designed for applications requiring extremely high breathability. The special formula of Raso Top Bio lends the product excellent adhesion to the majority of substrates used in construction, combined with high spreadability during application. Owing to the addition of pozzolanic reagents, selected sands and specific additives, Raso Top Bio meets the strictest requirements in terms of environmental friendliness. Raso Top Bio is recommended for work in licata external solid insulation systems and in the majority of work aimed at repairing/restoring construction heritage as a skim coating with superior permeability to water vapour properties.

Additional information


25 KG




5.5 – 6 litres of clean water for every 25 KG bag

Yield Consumption

Gluing: 4 to 5 kg/m2 for full surface; 3.5 – 4.5 kg/m2 for points in the perimeter.

Skimming: 3.5 – 4 kg/m2 (1.1 – 1.2 kg/m2 per mm of thickness)