4.3 - ATTIC
  Number of households by region Number of households by year of construction
Manitoba / Saskatchewan Alberta British Columbia Before 1950
Dwelling has an attic
Yes 495,260 A 920,792 A 790,538 A 926,169 A
No 77,077 M 160,300 M 207,912 M 152,061 M
Don't know U U U U
Not stated U U U U
Dwelling has an insulated attic
Yes - on the attic floor 394,626 A 656,758 A 509,596 A 664,626 A
Yes - on the attic walls U U U U
Yes - on both the attic floor and walls 33,090 M 139,363 M 131,347 M 123,623 M
No U U U U
Don't know 47,882 M 108,730 M U 66,111 M
Not stated 53,842 M U U 64,633 M

Note:

Due to rounding, the numbers may not add up and may differ slightly among tables.

Legend:

The letter beside each estimate classifies its quality as follows: A–Acceptable, M–Use with caution, U–Too unreliable to be published.

Source:

2011 Survey of Household Energy Use