Efficiency Matrix is a company that focuses on the building envelope.
They check air tightness and test air permeability for buildings in commercial, industrial and residential sectors, as well as providing solutions to enable efficient ventilation and air tightness/insulation.
As specialists in the niche market of building air tightness, Efficiency Matrix are working with the 5x4 team to test the air-tightness of our Project Building.
For more great tips on insulating your house, or to read more about the advantages of an air-tight house, head to their website:
Or find their Youtube Channel: