Industrial Insulation, Scoped to Your Schedule.

The Numbers, and the Limits.

• Standard spray foam stops at 80 °C. Hot tanks and pipe get a high-temperature foam. CAN/ULC-S705.1 puts closed-cell envelope foam’s service range at −60 to +80 °C, and manufacturers require it to be kept at least 75 mm clear of any device whose surface exceeds 80 °C. For hot equipment we switch products: Genyk 5022 high-temperature tank foam, rated for continuous service up to 149 °C (300 °F), on condensate and water tanks, hot-water and hot-oil piping. Above that it is not our scope. Tell us the operating temperature early and we will tell you straight.
• The envelope requirement is NECB 2020 at Tier 1. In Climate Zone 7A that caps walls at 0.215 W/(m²·K), roofs at 0.121 and floors at 0.138 — effective RSI 4.65, 8.26 and 7.25, or roughly R-26.4, R-46.9 and R-41.2. Assemblies in contact with the ground come from Table 3.2.3.1 at 0.284 for walls and roofs. AR 5/2024 fixes Alberta at Tier 1 and bars a municipality from requiring more.
• Airtightness testing is an option, not a mandate. Article 3.2.4.1 permits compliance by whole-building test at 1.50 L/(s·m²) at 75 Pa to ASTM E3158 — pressurised and depressurised, results averaged — or by the assembly route at 0.2 L/(s·m²). NRC’s own change summary calls whole-building testing an option. That makes a measured result a differentiator on a project rather than a box to tick.
• Payback works off avoidable cost, not the average on the bill. Alberta’s default-rate gas commodity ran roughly $0.93 to $3.42 per gigajoule through 2026, and ATCO Gas North’s schedule effective 1 August 2026 puts variable delivery near $1.05 per GJ. A saved gigajoule is therefore worth something in the region of $2.50 to $5.00 — not the $4 to $7 you get by dividing a whole bill by consumption, because the fixed daily charge does not move whatever you save. Modelling it the second way inflates payback claims substantially.
• Application has documented conditions attached. Article 9.25.2.5 of NBC(AE) 2023 requires spray-applied polyurethane to be installed in accordance with CAN/ULC-S705.2, which covers substrate conditions, lift thickness, daily testing of the installed product and documentation. Substrate must be frost-free, at 19% moisture content or less, and at least 3 to 5 °C above the dew point. In a live facility that is a scheduling constraint, and it belongs in the outage plan.

Envelope figures and their clause references are set out in the Alberta code compliance guide; the two airtightness routes are in the air barrier explainer; and cold-weather scheduling limits are in the winter application guide. For building-scale work, the industrial insulation page goes further into the NECB requirements.