All Roofing Cable Trays

Rooftop cable trays are structural systems designed to support, organize, and protect electrical and communication cables on roofs, available in various materials, sizes, and configurations for both penetrating and non-penetrating installations.

Overview

Rooftop cable trays provide a reliable method to manage electrical, coaxial, fiber, and hybrid cables while protecting them from environmental damage. They are essential for commercial, industrial, and data center applications, ensuring safety, accessibility, and efficient cable routing.

Types of Roofing Cable Trays

Wire Mesh Cable Trays

Constructed from welded steel wire, often powder-coated or galvanized for corrosion resistance. Flexible and easy to install, suitable for heavy power cables or data center cabling. Accessories include dividers, splicing kits, dropouts, and bend kits for routing changes.

Ladder Cable Trays

Feature side rails with rungs to support cables, ideal for large bundles and heavy-duty applications. Available in steel, stainless steel, or aluminum, with adjustable heights and lengths.

PV

C and Rubber Sleeper Bridge KitsNon-penetrating supports that elevate cables above the roof surface.

Include PV

C or rubber pads to protect the roof membrane and distribute weight evenly.

Rooftop Step-

Over and Bridge KitsDesigned to allow cables to cross over obstacles or other cable runs. Typically include sleepers and hardware for secure, non-penetrating installation.

Support Systems

Adjustable Duct and Cable Supports: Provide height flexibility and stability for various cable widths and roof conditions.

Non-

Penetrating Bases: Protect the roof membrane while supporting cable trays, often engineered to distribute weight at 2 PSI or more.

H-

Frame and Strut Systems: Offer robust support for heavy conduits, HVAC ducts, and cable trays, with options for seismic or high-wind applications.

Corrosion-

Resistant Coatings: Many systems feature galvanized or BIS UltraProtect® finishes for long-term durability.

Installation Considerations

Ensure proper spacing and leveling of supports to distribute weight evenly. Use horizontal bracing or double/triple bracing in high-load or high-wind areas. Select non-penetrating supports when roof integrity must be preserved.

Include accessories like dividers, splice kits, and dropouts to organize and protect cables. Leading SuppliersPHP: Offers high-wind and seismic-rated rooftop cable tray supports. Protech Online: Provides adjustable duct and cable supports for rooftop installations.

Legrand (Cablofil®): Specializes in wire mesh and ladder trays with extensive accessories. Walraven: Lightweight, corrosion-resistant, and adjustable rooftop cable tray supports. Unistrut (Unipier): H-frame and base systems for non-penetrating rooftop support.

Andrew / Tessco: Offers bridge kits, PVC sleepers, and step-over solutions for coaxial and hybrid cables. Nicholson Roof Products (ROOFPORT®): Provides roof penetration fittings for small cables and pipes.

Conclusion

Choosing the right roofing cable tray system depends on cable type, load requirements, roof conditions, and installation preferences. Non-penetrating supports are ideal for preserving roof integrity, while wire mesh and ladder trays provide flexibility and heavy-duty support. Accessories and modular components enhance organization, safety, and long-term reliability, making rooftop cable tray systems a critical component of modern infrastructure.