Spray Foam Insulation in Camrose, AB.

62.4% single-detached is on the lower side, so a bit over a third of Camrose's dwellings are attached or multi-unit. Set that against 47.7% pre-1980 and the city's difficult category becomes clear: older attached buildings, of which there are a considerable number here in absolute terms.

In those buildings the insulation deficit is usually not the headline problem — air movement between units is. Party-wall cavities, shared attic space and common mechanical chases give warm air routes out of one suite and into a cold assembly somewhere else, and no single occupant is positioned to see the whole path. Detached stock at least fails where the owner can find it.

Camrose is one of only three communities in this ledger that does not borrow its climate data. The CAMROSE station (climate ID 3011240) is the city's own: 5,634 heating degree days at an 18 °C base, an average January daily minimum of -17.8 °C, and a recorded extreme of -44.9 °C — the coldest January extreme of the five stations used across these 27 communities.

Wetaskiwin borrows this station from about 45 km away, which is why the two cities show matching figures. For Camrose the number is a measurement; for Wetaskiwin it is an assignment.