EXOPERM MONO SA 250 and VARA FLUID Spray are two Partel airtight systems recently tested and certified as a Passive House Component, Class phA, by the Passive House Institute in Darmstadt, Germany.Very high energy savings in buildings are achieved by integrating highly efficient building systems, careful planning, and highly efficient components.Through these certified membranes, Partel facilitates industry professionals reliable project planning, ensuring the delivery of necessary energy parameters for their use in Passive Houses and energy-efficient buildings. The tests took place under the most realistic possible conditions.