Rohn BRM640M Non-Penetrating Roof Mount

Supports 4" Mast Installations Without Roof Penetration
The Rohn BRM640M is a heavy-duty non-penetrating roof mount designed to accommodate a 4-inch outer diameter mast up to 48 inches high. Built for demanding antenna and telecom applications, this mount provides secure support without drilling into the roof structure—ideal for flat roof installations where structural integrity must be preserved. It’s the go-to solution for commercial and professional setups requiring large-diameter masts without compromising roof warranty or protection.

Engineered for Stability and Durability in Harsh Conditions
Constructed with weather-resistant steel and hot-dip galvanized for corrosion protection, the BRM640M offers long-term reliability in demanding outdoor environments. Its frame is designed to be loaded with standard 16" concrete blocks (not included), providing ballast stability in high-wind conditions. Whether used for broadband, cellular, two-way radio, or other RF applications, this unit keeps critical infrastructure secure and in place.

Quick Setup with Minimal Tools Required
The BRM640M comes pre-fabricated with an intuitive design that assembles quickly without requiring complex tools or permanent fixtures. Fewer bolted connections mean easier handling during setup, while maintaining the strength needed for larger mast diameters. Ideal for temporary or semi-permanent installations, it saves time and effort on rooftops with limited access or restrictions on structural modifications.

Protects Your Roof While Supporting Heavy Loads
This mount distributes weight across its square base frame, which supports a typical ballast tray system. With a footprint optimized for stability, the BRM640M ensures minimal point loading on the roof surface. An optional pad or mat can be placed beneath the mount to further protect the roof membrane from abrasion, pressure points, or vibration damage.

Perfect for Telecom, Broadcast, and Surveillance Applications
Designed with flexibility in mind, the BRM640M is suitable for mounting surveillance systems, wireless backhaul links, broadcast antennas, and more. Its compatibility with a wide range of mast-mounted hardware makes it an indispensable solution for telecom integrators, RF professionals, and installers needing dependable rooftop support for large antennas and equipment.