Spray Foam Insulation in Delburne, AB.

71.1% single-detached against 53.9% pre-1980 gives a village that is essentially a collection of individual older houses, with about 184 newer dwellings among them.

Small, old and detached has one practical consequence worth naming: nothing is standardised. 216 houses built across seven or eight decades by whoever was building at the time will have seven or eight different attic details, several different foundation types, and a rim-joist condition that has to be opened up to be known. The diagnosis is per building. What generalises is the physics — warm air leaves through the top of the building, and until that path is closed, adding depth above it mostly buys less than expected.

There is no climate station at Delburne. The village is assigned RED DEER REGIONAL A (climate ID 3025480), about 47 km west — 5,619 heating degree days at an 18 °C base, a January daily minimum averaging -17.6 °C, and -43.8 °C at the recorded extreme. It is a regional stand-in for the whole Red Deer area, not a Delburne reading.