[EN 12792-2003, 118]:rigid board composed of insulation material with one or both sides faced with a finishing material. The outer facing is normally a vapour barrier and can also be used as an air barrier

[EN 12792-2003, 120]:components of ductwork incorporating one or several of the following changes relative to:- the length of the duct;- the orientation of the duct;- the shape of the straight length of the duct;- the area of the cross-section of … Continue reading →

[EN 16798-5-2:2017, 3.2]:heat loss by leakage and heat transfer of the ductwork, recoverable for heating and coolingNote 1 to entry: Negative values.