TRT Rail Base System is a rail-based solar mounting solution built specifically for composition shingle roofs. It replaces the traditional L-foot and flashing plate design with a cast aluminum base that adheres directly to the asphalt roof using butyl adhesive and EPDM rubber, fastened with 5/16″ x 3″ screws. Available in 7 and 14 foot rail lengths with clip-on rail fasteners, the TRT Rail Base System is UL 2703 listed, PE certified, Class A/B fire rated, and tested to ASTM D7147 and TAS 100(A) for uplift, shear load, and water penetration. For base spacing requirements, always use TRT’s PE-certified span tables.
For larger arrays or layouts that benefit from rail flexibility and integrated wire management, TRT02 delivers a repeatable, code-compliant workflow on composition shingle roofs. Before specifying your system, see how wind and snow loads affect mounting system selection for your region.
Technical Overview
| Specification | Detail |
|---|---|
| System | TRT02 Rail Base System |
| Roof Type | Composition shingle |
| Certification | UL 2703 Listed |
| Fire Rating | Class A Class B |
| Testing | ASTM D7147 • TAS 100(A) |
| Rail Lengths | 7 ft • 14 ft |
| Rail Fastener | Clip-on design |
| Frame Compatibility | 30–40mm solar panel frames |
| Max Panel Size | Less than 1722mm × 1134mm |
| Mid Clamp Frame Height | 26–37mm |
| Skirt Clamp Frame Height | 26–40mm |
| Material | Aluminum 6005-T5, black anodized finish |
| Sealing | Butyl adhesive • EPDM rubber • No silicone |
| Wire Management | Integrated in rail cavity |
| PE Certified | ✓ Yes |
| Warranty | 25 Years |
Technical Overview
| Specification | Detail |
|---|---|
| System | TRT02 Rail Base System |
| Roof Type | Composition shingle |
| Certification | UL 2703 Listed |
| Fire Rating | Class A Class B |
| Testing | ASTM D7147 • TAS 100(A) |
| Rail Lengths | 7 ft • 14 ft |
| Rail Fastener | Clip-on design |
| Frame Compatibility | 30–40mm solar panel frames |
| Max Panel Size | Less than 1722mm × 1134mm |
| Mid Clamp Frame Height | 26–37mm |
| Skirt Clamp Frame Height | 26–40mm |
| Material | Aluminum 6005-T5, black anodized finish |
| Sealing | Butyl adhesive • EPDM rubber • No silicone |
| Wire Management | Integrated in rail cavity |
| PE Certified | ✓ Yes |
| Warranty | 25 Years |
The entire system is fully compliant with UL2703 standards.
The base passed Florida high-wind, water-penetration, uplift, and shear-load testing
Certified to maintain the fire resistance rating of the existing roof.
Reviewed and approved by a Professional Engineer (PE) to ensure compliance with safety standards and adequate load capacity.
Ensures a worry-free experience throughout the product's service life.
Both 7 and 14 foot rails
Roof rail made from Aluminum 6005-T5 for standard conditions, featuring integrated wire management.
Splice designed to connect TRT rails, made from high-quality aluminum.
Made from cast aluminum with a black anodized finish, designed for direct attachment to TRT Rail, featuring EPDM and butyl rubber.
Black surface treatment, compatible with modules 26 ~37mm thick, and equipped with a grounding device.
Secures modules to rail ends with a fully hidden bond, with no restrictions on module size or thickness.
Cable clip is a universal wire management clip that can be used with all systems
Designed specially for TRT Rail.
Provides a complete finish to the installation, eliminating safety hazards at the base end.
Fits modules ranging from 26 to 40mm in thickness.
To connect N-S modules or E-W modules
Rail based system micro inverter holder
Keep the cables in the rail cavity from slipping out.
Customizable length options, easy assembly, compatible with any thickness of solar module, and aesthetically pleasing.
Splice connection for the skirt, made from high-quality aluminum.
Provides a complete finish to the installation, preventing safety hazards at the end of the skirt.
Provides a complete finish to the installation, preventing safety hazards at the end of the skirt.
Manage cables laid vertically with rails.
Roof rail made from Aluminum 6005-T5 for standard conditions, featuring integrated wire management.
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