“Over Air Barrier” Electrical Light Mounting Block

What’s the best way to eliminate the possibility of moisture intrusion into the wall at exterior lights and plugs?

The answer is simple: just eliminate the hole with the Over Air Barrier!

Traditionally, builders fasten exterior electrical boxes to a stud by creating an opening through the sheathing. However, this practice causes a significant issue—the electrical box creates a large opening in the air/moisture barrier, violating the NBC. Professionals have tried to address this problem using materials like spray foam, flashing tape, and other sealing products. Unfortunately, these solutions tend to be costly, labor-intensive, and susceptible to installation errors, leaving homes vulnerable to future moisture-related issues.

The innovative “Over Air Barrier” Electrical Light Mounting Block provides a superior solution. It places the electrical box entirely outside the air/moisture barrier, eliminating the need for a large opening in the barrier. With only a small ¾” hole required for the wire to pass through, the design ensures a fully sealed opening with caulking. This approach saves both time and money while preventing moisture intrusion and improper installations.

The OAB Mounting Block offers additional flexibility. Since it attaches directly to the sheathing instead of requiring fastening to a stud, placement becomes much more precise and adaptable compared to traditional in-wall electrical boxes. This flexibility allows for optimized positioning without compromising the air/moisture barrier.

Additionally, the “THIRD WAVE” accessories are designed to accommodate various thickness depths, including 5/8”, ¾”, 1”, and 1¼” (1.59 cm to 3.18 cm). These accessories offer even more customization options, making them a versatile choice for a variety of projects.