Spray Foam Insulation in Bowden, AB.

62.4% of dwellings are single-detached — a moderate share, so roughly a third of the town is something else: duplexes, row units, small apartment stock.

Combine that with 335 pre-1980 dwellings and the older attached buildings become the hardest cases in town. A pre-code duplex or fourplex has all of the usual problems — unsealed top plates, an attic hatch open to the ceiling plane, a rim joist behind finished basement wall — plus a party wall that carries air between units, which means a fix in one unit can be undone by the neighbouring one. The detached houses at least fail in isolation.

Bowden has no climate station. The reading here is borrowed from RED DEER REGIONAL A (climate ID 3025480), roughly 43 km north: 5,619 heating degree days at an 18 °C base, an average January daily minimum of -17.6 °C, and -43.8 °C at the recorded extreme. Bowden sits between two stations — Red Deer's to the north, Calgary's to the south — and the ledger assigns it the northern one.

The town's named facility is the Bowden Institution, a medium-security federal penitentiary established in 1974 on the site of a former WWII RCAF training base. Correctional facilities are continuously occupied, continuously heated, and made up of buildings of very different vintages on one secured site — a building portfolio rather than a single structure, and one where the envelope work is scheduled around operations rather than the other way round.