Applications

Working exclusively to supply Glass and Glazing trades, backpans are adhered and sealed to the curtain wall frame behind opaque glazing areas.

  • Exterior Cladding
  • Interior Feature Walls & Entries
  • Canopies
  • Signs & Corporate Identities
  • Column Covers

Back Pan Finishes and Materials

Depending on your design criteria, we can supply backpans in

  • Galvanized G90 (standard)
  • Galvalume
  • Available in 20, 22 and 24 gauge (22 standard)

Manufactured in Galvanized G90 (standard) or Galvalume steel in 20, 22, or 24 gauge thicknesses. These corrosion-resistant materials balance structural strength, lightweight handling, and long-term durability for demanding exterior environments.

View colour guide

Different kinds of back pans

Curtainwall Systems

Unitized Curtain Wall Systems

Unitized systems are considered to be superior from lower on-site labour costs derived from the units being manufactured in a climate-controlled factory environment and shipped to the site in modular units.

Stick Built Curtain Wall

Stick-built systems can be more economical especially if the building facades require lower volumes. In addition, the lead time is much shorter. The parts required will be ready which will then allow for earlier installations. However, the installation will take longer because fabrication and glazing will be done on site.

Optimized Insulation Integration

IMARK uses Roxul Cavityrock exterior cavity insulation which has been designed exclusively for the use in exterior cavity wall and rainscreen applications like back pans.  As a high density semi rigid board Roxul Cavityrock insulation combines a high density outer layer and softer inner layer that is fire resistant, water and moisture resistant and delivers a R-value of 4.3/inch.

Depending upon the back pan design and depth of the pan we can supply insulation in thicknesses ranging from 2″ to 5″ (3″ standard)

backpan

Features and Benefits
Built for Better Performance

  1. Custom Design Flexibility
    Available with custom flanges, oversized dimensions, tapered or angled profiles, plus factory punching and notching for specialized anchoring, firestop, and façade-transition requirements.
  2. Superior Vapor Barrier Performance
    Tabbed, sealed, and spot-welded corners provide airtight, vapour-tight performance, reducing condensation risk in spandrel panels and protecting concealed structural components from moisture damage.
  3. Firestop System Compatibility
    Available as Hilti Firestop-compatible assemblies for unitized curtain wall systems, supporting rated perimeter fire containment and seamless integration with glazing components.
  4. Streamlined Field Installation
    Pre-formed, project-specific back pans reduce on-site labour for unitized and stick-built curtain wall applications, ensuring precise fit, consistent quality, and faster installation.
Back of curtain wall.

Curtain Wall Back Pans Design

Back pans are designed to minimize field installation time and can be fastened to curtain wall, steel substrate or block substrate.  Specialized shapes and custom punching or notching are available to suit any specific application. All corners of our back pans are tabbed sealed and spot welded to deliver superior performance as a vapor barrier. IMARK is also experienced in fabricating Hilti Firestop back pans for use in unitized curtain wall assemblies.

spandrel backpan building application
hilti firestop backpan
backpan

FAQ

Interested? Let’s Talk.

Contact our construction department to arrange a consultation or submit a form and a representative will contact you.

Roxul Cavityrock insulation: Thermal protection for commercial and industrial buildings.