Simply put, the R-value is a measurement of an insulation solution’s thermal resistance or heat flow. The higher the R-value, the better the insulating properties that form of insulation has.

One of the main advantages of polyurethane spray foam insulation is that it has a higher R-value when compared with other forms of insulation such as fibreglass batts, board insulation, or foil insulation. This means it’s more energy-efficient and more environmentally friendly.

The ’R” value of conventional fibreglass insulation is measured ina perfect environment.  When it is actually applied to a house, due to the airflow and subsequent leakage, the efficiency of the batt is compromised and thus delivers a lesser ‘R’, value than its original form.

Polyurethane on the other hand maintains its thermal properties and maintains its properties throughout its life.  Upon application, Polyurethane creates an envelope of the building that seals any leakage and consequently reduces the airflow dramatically ensuring that the ‘R’ value is true and permanent.  For this reason, it is not necessary to spray PU to the same thickness of a batt to achieve the required ‘R’ value.