Rohn BRM42510 BRM4 Series Non-Penetrating Roof Mounts

Roof Antenna Mounting Without Penetration or Damage
The Rohn BRM42510 Non-Penetrating Roof Mount is the ultimate solution for antenna installations where roof integrity must be preserved. Featuring a 10-foot mast with a 2.5" outer diameter, this mount is engineered to support a wide range of communication antennas on flat rooftops without the need for drilling, lag bolts, or screws. It’s a trusted choice for commercial, industrial, or residential projects that demand dependable performance without compromising the building envelope.

Built-In 10-Foot Mast for Elevated Signal Transmission
With an integral 10-foot galvanized mast, the BRM42510 provides the height needed for antennas to operate effectively above rooftop obstructions. Whether you're installing equipment for cellular, broadband, PCS, two-way radio, or surveillance, this additional elevation helps achieve better line-of-sight and reduces interference. The extended mast is welded directly into the frame for added structural integrity and ease of setup.

Non-Invasive Design Protects Roof Surfaces
The mount’s frame rests directly on the rooftop and is designed to be weighted down using standard 16-inch concrete blocks (not included). This ballast system eliminates the need to penetrate the roofing material, minimizing the risk of leaks, structural damage, or voided warranties. Ideal for leased properties, commercial buildings, or temporary installations, the BRM42510 offers a professional solution that doesn’t require permanent modification.

Heavy-Duty Galvanized Steel Frame for Harsh Conditions
Constructed from angle steel and finished with a hot-dip galvanized coating, the BRM42510 is built to withstand demanding outdoor environments. The corrosion-resistant frame stands up to rain, snow, and UV exposure, ensuring long-lasting performance even in extreme weather. Its rigid structure remains secure under wind load when properly weighted with concrete ballast blocks.

Ships Disassembled for Transport and Easy Assembly On-Site
For convenience, the mount ships in a compact, disassembled state and can be quickly assembled at the installation site. The square base frame is designed to accept and secure concrete blocks, distributing weight evenly and keeping the mast upright. Optional accessories like the BRM4MAT provide an additional cushion layer between the mount and roof surface, preventing abrasion and further protecting roofing membranes.

Ideal for Permanent or Temporary Antenna Installations
Whether you’re working on a permanent communication infrastructure project or a short-term event setup, the BRM42510 offers the strength, height, and simplicity needed for rapid deployment. Its non-penetrating nature makes it an excellent choice for locations with strict building codes or lease agreements.