Attic Insulation

If thinking about adding insulation to your attic, here are some points to keep in mind:

• In Alberta, attic insulation levels between R-40 and R-50 are recommended. (For general information, insulation types and typical R factor/inch, visit our insulation fact sheet)
  
  
• If hiring a contractor to install insulation, make sure to specify the amount of insulation you would like by referring to the total R-value rather than number of centimeters/inches.  This eliminates the guess work from your end on trying to figure out what different R-values would be associated with different insulation types.
• Topping up attic insulation is especially important when existing levels of insulation are R-12 or lower. Typically, homes built in the 1960’s or earlier will not have more than R-12 levels of insulation in the attic.
  
  
• Don’t assume because you have an older home that the attic insulation is inadequate.  This is one of the most likely areas that previous owners will have improved, so it’s important that you check the insulation level.
• Don’t forget to insulate the top of your attic hatch.
  
  
• Air leaks into the attic through the many cracks and penetrations can account for substantial heat loss and can lead to a variety of moisture related problems.  If adding insulation to your attic, make sure to take the opportunity to seal any areas of air leakage before starting the insulation work.  Consider sealing:
  
  
• Around the plumbing stack and other pipes entering the attic
• Around wires or ceiling light fixtures that penetrate the attic floor
• Around ducting
• At the junction of the ceiling and interior wall partitions
• At the top of interior and exterior walls
• Around attic hatches
• Around the chimney
• Along the edge of shared walls
  
  
• Ensure that soffit venting is not blocked by added insulation; baffles may have to be installed.

Different types of homes and attic spaces may cause unique challenges; therefore it is important to consult an insulation company that can provide you with the best advice possible based on your home’s construction and design.