Long-span roofing with a clean architectural finish
Previously known as ARCPANEL Smartek, DeltaTrimTrim is a versatile architectural roof system combining long-span capability, thermal performance and lightweight construction.
Insulated Roof Panel Systems
DeltaTrimTrim
DeltaTrimTrim
Designed for low-pitch roofing with exceptional span and cantilever capabilities
ARCPANEL DeltaTrimTrim is a lightweight insulated roof system designed for commercial and residential applications where low-pitch performance and a consistent architectural profile are required.
Available with EPS-FR or TPC insulated cores, DeltaTrimTrim provides a choice of performance characteristics to suit different project requirements, including an FM Approved TPC option.
With Trimdek profiles to both the roof and ceiling sheets, the system delivers a clean, uniform appearance while combining roofing, insulation and ceiling in one integrated panel.
Its long-span and cantilever capabilities can reduce the need for complex supporting structures, while lightweight panel construction helps simplify installation and reduce construction time.

Performance by design
Performance by design
Strength, efficiency and flexibility in one integrated roof system
Technical specifications
Technical specifications
Low-pitch performance with a consistent architectural finish
DeltaTrimTrim combines long-span capability, thermal performance and lightweight construction with matching Trimdek roof and ceiling profiles for a clean, integrated finish.
Available with EPS-FR or TPC insulated cores, the system offers flexible performance options to suit different project requirements.
Panel configurations
| Specification | DeltaTrimTrim-EPS-FR | DeltaTrimTrim-TPC |
|---|---|---|
| Panel profile (top/bottom) | Trimdek / Trimdek | Trimdek / Trimdek |
| Minimum roof pitch | 2° | 2° |
| Maximum span | 12.3 m | 9.0 m* |
| Maximum cantilever | 3.7 m | Not specified |
| Maximum length | 19 m | Not specified |
| Minimum length | 1.8 m | 1.8 m |
| Panel thickness | 75–250 mm | 75–200 mm |
| R-value | R1.7–R6.1 | R2.05–R5.40 |
| Cyclonic rating | C4 | Not specified |
| FM Approved | No | To be confirmed |
| Group fire rating | Group 1 | Not specified |
| Xtreme option | Yes | Not specified |
Standard panel thicknesses: 75, 100, 125, 150, 175, 200 and 250 mm. Other thicknesses may be available on request.

Design possibilities
ARCPANEL roofing in application
From contemporary homes to commercial, sporting and community projects, ARCPANEL insulated roof systems provide the long-span capability, thermal performance and design flexibility to create distinctive architectural roof forms.
Roof colours & finishes
Roof colours & finishes
Premium steel colours and finishes for greater design flexibility.
Choose from a wide range of COLORBOND®, UNICOTE® and UNICOTE® LUX steel colours and finishes to complement your project. Selected ARCPANEL systems can also be specified with different colours or finishes to the top and bottom skins.
Colour availability varies by panel type, with both stocked and project-specific options available. View our colour availability guide or contact ARCPANEL to discuss the most suitable finish for your project.

Low-pitch design. Clean architectural finish.
DeltaTrimTrim for contemporary roof design
DeltaTrimTrim combines low-pitch capability with impressive spans and cantilevers, giving designers greater freedom to create expansive, lightweight roof forms.
Available with EPS-FR or TPC insulated cores, the integrated panel system delivers thermal performance together with matching Trimdek roof and ceiling profiles for a clean, consistent architectural finish.
Have questions about ARCPANEL roof systems?
Find helpful answers to common questions about ARCPANEL insulated roof panels, from design options and thermal performance through to installation, finishes and technical requirements. Our FAQs provide practical information about the ARCPANEL roofing system.










