In short: A standing-seam tank insulation panel is insulation laminated to pre-formed metal jacketing, sealed to adjacent panels with a mechanically folded double-lock seam — no fasteners through the weather face. Max Thermal Fabricators is the only manufacturer of these panels in Canada, building them to your exact tank dimensions and operating temperature in Edmonton, Alberta. Designed for a 25+ year maintenance-free service life, the system installs from a boom lift with no scaffolding and no welding on the tank. The system is custom-quoted per project; installation is quoted separately as a budgetary line.
The MaxFab Tank Panel System (formerly the Enerpro Tank Panel System) replaces traditional lap-and-fastener tank jacketing with a sealed standing-seam envelope. Insulation is laminated to pre-formed metal jacketing, and adjacent panels are joined with a folded double-lock standing seam — the same mechanical seal used in architectural metal roofing. The result is a continuous metal envelope around the tank with no rivets, screws or sealant joints on the weather face, which is what removes the conditions that cause corrosion under insulation (CUI).
Key Facts
- Canada's only standing-seam tank panel manufacturer — built in Edmonton, AB.
- Seam: mechanically folded double-lock standing seam; no fasteners through the weather face.
- Service temperature: approximately −196 °C (cryogenic, closed-cell PIR) to +650 °C (high-temperature mineral wool).
- Service life: 25+ years maintenance-free.
- Largest installation completed: 132 ft diameter × 145 ft high oilsands tank — dome roof and bottom cone.
- Install: boom lift, no scaffolding, no welding on the tank, no hot-work permit, tank stays in service.
How the Panel System Is Built
Every panel is designed, CNC-cut, formed, laminated and seamed in our Edmonton facility — nothing is subcontracted, so there is one accountable team from drawing to delivery. Panels arrive on site pre-fabricated to your tank's exact geometry, including accommodations for nozzles, manways, stairs and other penetrations. On site, panels are anchored with an internal cable-and-clip system and the double-lock seam is closed with hand tooling.
Construction Specification
| Component | Specification |
|---|---|
| Seam | Mechanically folded double-lock standing seam — no penetrations through the weather face |
| Aluminum jacketing | ASTM B209 wrought aluminum (alloys 1100, 3003, 3105-H14), 0.016″ to 0.032″, with a DuPont Surlyn 3-mil three-layer polyethylene moisture barrier heat-laminated to the interior face |
| Steel jacketing (alternative) | 26-gauge galvanized (ASTM A653), galvalume (ASTM A792), aluminized (ASTM A463), or pre-painted |
| Insulation core | Closed-cell polyisocyanurate (PIR) for cold/cryogenic; rigid mineral wool (e.g. ASTM C612 Type IVB) for high-temperature process service; fibreglass where specified |
| Tank geometries | Cylindrical shell, cone roof, dome roof, low/high-pitch, pie segment, bottom cone — custom-fabricated |
Why a Standing-Seam Envelope Outlasts Traditional Jacketing
Traditional jacketing relies on overlapping sheets fastened through the weather face and sealed with mastic. Sealants age and pull away; every lap and every fastener becomes a slow leak; and once water reaches the insulation core, corrosion under insulation begins out of sight. A sealed standing-seam envelope removes those pathways by design — the seal is mechanical, not chemical, and there are no penetrations on the sidewall weather face. For the full comparison, see standing-seam vs. lap-and-fastener jacketing and the corrosion under insulation reference.
Why Operators Choose a Canadian Manufacturer
Every other standing-seam tank insulation manufacturer in North America is based in the United States. Sourcing the panels from a Canadian manufacturer means no import duties, no cross-border freight delays, no currency exposure, and a local team that understands Canadian operating conditions. Max Thermal Fabricators manufactures in Edmonton and delivers directly to industrial sites across Canada — oil and gas, petrochemical, LNG, mining, pulp and paper, food and beverage, water treatment, and fire-protection storage.
Selecting the Insulation Core
The jacketing and seam are constant; the insulation core is specified to your application's operating temperature. See choosing the insulation core for the full decision framework, and the high-temperature polyiso tank panel — the only one fabricated in Canada — for hot service beyond standard PIR's range.
| Insulation core | Continuous service range | Typical service | Key properties |
|---|---|---|---|
| Closed-cell polyisocyanurate (PIR) | −196 °C to +150 °C (−321 °F to +302 °F) | Cryogenic, LNG, cold and ambient service | Closed-cell — does not absorb moisture; K-value ≈ 0.022–0.027 W/(m·K), stable for decades |
| High-temperature polyiso | −183 °C to +177 °C (−297 °F to +350 °F); intermittent to +190 °C (+375 °F) | Hot service beyond standard PIR's range | ASTM C591-17; 97% closed-cell; Class 1 fire rating (ASTM E84); in Canada, fabricated into tank panels only by MaxFab |
| Rigid mineral wool | Ambient to approximately +650 °C (+1,200 °F) | High-temperature process service | Non-combustible; above ~450 °F the organic binder degrades but the fibre structure and thermal performance remain; K ≈ 0.035–0.045 W/(m·K) |
| Fibreglass | Varies by product specification | Where the client's spec calls for it | Supplied and laminated to spec |
Service ranges are industry-typical figures for each core material class; the rated range for your project is confirmed against the specific product datasheet at quoting. Repair and filler pieces for existing systems of any make are available as custom tank panels.
Pricing
The MaxFab Tank Panel System is custom-designed and quoted per project — there is no list price. The panel system is quoted separately from installation, and installation is always provided as a separate, budgetary line. Final pricing depends on your tank's dimensions, geometry, operating temperature and the insulation core selected. For the full breakdown of what drives the number and what to send, see how quoting works. Send us the basics on your tank and we will scope it and respond within one business day.
Common Questions
What is a standing-seam tank insulation panel?
Insulation laminated to pre-formed metal jacketing, sealed to adjacent panels with a mechanically folded double-lock standing seam. No rivets, screws or sealant joints through the weather face — which removes the most common moisture-entry pathways behind corrosion under insulation.
Who manufactures standing-seam tank insulation panels in Canada?
Max Thermal Fabricators in Edmonton, Alberta is the only manufacturer of pre-fabricated standing-seam tank insulation panels in Canada. Every other standing-seam tank panel manufacturer in North America ships from the United States.
What does a tank insulation panel system cost?
It is custom-designed and quoted per project; there is no list price. The panel system is priced separately from installation, and installation is provided as a separate, budgetary line. Pricing depends on tank dimensions, geometry, operating temperature and insulation core.
Does the tank need to be shut down to install the panels?
No. Panels install from a boom lift with no welding on the tank shell and no scaffolding. The tank stays in service throughout and no hot-work permits are required.