Rohn JRM27555HC 120"x 2 7/8" Non-Penetrating Roof Mount

Non-Penetrating Roof Mount for Communication Antennas
The ROHN JRM27555HC is a non-penetrating roof mount system built for installing communication antennas without damaging the rooftop surface. This system includes a 10-foot galvanized steel mast in two 5-foot sections, each with a 2-7/8" outer diameter. With a 62" square base designed for use with standard concrete blocks (not included), this mount delivers a secure, stable platform for wireless, broadcast, and broadband installations.

Two-Piece Mast Simplifies Transportation and Assembly
The two-piece design makes moving and handling the mast much easier, especially when working in tight stairwells or elevators. Once connected, the mast provides a full 10 feet of vertical height, giving antennas the clearance they need to overcome rooftop obstructions. Its 0.203" wall thickness provides the strength required for heavier-duty antenna systems used in PCS, LTE, or point-to-point configurations.

Ballast Mounting Protects Roof Membranes
Instead of bolts or fasteners, this system is held in place by up to 12 nominal 16" concrete blocks, allowing it to anchor firmly without penetrating the roof. That makes it perfect for leased spaces or sites where preserving the roof warranty is essential. The design eliminates the risk of leaks and long-term roof damage while still maintaining solid wind resistance.

Large 62-Inch Base Frame Distributes Weight Evenly
The 62" square footprint spreads the load of the mount and mast over a wide area, helping reduce pressure on any single point. This design not only ensures structural safety but also helps the system withstand shifting or tipping in gusty environments. With galvanized steel throughout, the mount resists rust and is well suited for outdoor use in any climate.

Ships Disassembled for Easy Handling and Job Site Setup
The JRM27555HC ships on one skid and weighs approximately 50 pounds fully assembled (not including ballast). All necessary mounting hardware is included in a single carton, making setup fast and efficient. Whether you're working on a single-unit deployment or staging multiple rooftops, this design makes transportation and assembly quick and job-site friendly.

Compatible with Roof Mats and Safety Cable Kits
To protect roof surfaces further, ROHN offers optional accessories like the JRMMAT (1/8") or JRMPAD (3/8") to serve as a buffer between the steel frame and the rooftop. Each JRMMAT set includes four 72" x 18" sections that assemble into a 72" x 72" pad beneath the mount. For added security in high-wind areas, pair this system with the SCK150 safety cable kit.

Ideal for Rooftop Telecom, Wireless, and Surveillance Systems
This mount is commonly used for rooftop deployments in telecom, WISP, camera surveillance, and broadcast applications. Its heavy-duty mast, wide base, and non-penetrating design make it a top choice for contractors who need a balance of strength, rooftop safety, and setup efficiency.