How to calculate the r-value of the insulation?

The insulation needs vary depending on the building system and the type of roof. You are advised to consult the description sheet to know the R-value of the insulation. In general, the higher the R-value, the greater the insulation.

What are the signs of a bad insulation?

When the attic is poorly insulated, you notice the formation of ice on the roof and icicles around the edges. The cost of electricity is higher for air conditioning and for heating. In addition, the temperature seems difficult to control and sometimes causes discomfort inside your home.