by the Energy Saving Trust
In 2018, ProPERLA wall coatings were independently tested by the UKAS accredited testing and analysis laboratory, Lucideon.
Lucideon’s world-leading testing and characterization laboratories enabled them to scientifically and impartially test ProPERLA wall coatings to ensure they are fit for purpose and conform to regulations.
25 year hygrothermal performance
External thermal insulation composite
BS EN ISO 7783:2011
Water vapour diffusion
Lucideon constructed a single skin brick wall which was evenly split vertically into thirds with a 10 mm x 100 mm insulated expansion joint inserted to prevent heat transfer between each section.
One third of the wall was coated using ProPERLA Masonry Crème, the middle third was left untreated to act as a control and the final third was coated with ProPERLA Primer followed by ProPERLA Facade Coating.
A total of 9 thermocouples were positioned on each section of the wall to monitor the temperature; 3 were positioned on the front of the wall, 3 were positioned at the rear of the wall and 3 were placed at a depth of 50 mm within the body of the wall. Thermal imaging was also used.
To determine the long term performance of proPERLA wall coatings, the test wall frame was subjected to accelerated weathering correlating to 25 years exposure.
Placed within a hygrothermal chamber, the test wall panel was subjected to repeated heat-rain cycles followed by heat-cold cycles at controlled humidity to simulate naturally occurring conditions.
The uncoated bricks (the middle third) showed evidence of water penetration and significant soluble salt deposits/salt effloresence