Improper installation of insulation can rob you of 25-30% of your R-value.

Illustration Source: Summerhill

Installation of insulation is very important. Improper installation can result in:

• Unwanted heat loss, which means increased heating bills

• Moisture problems which can lead to mould/mildew. This can eventually have an effect on the structural stability of a building. It can also lead to health/safety issues for the house occupants.