Nelson Insulation has been described as a company of “committed team players, dedicated industry professionals with strong technical backgrounds.” Our proven track record of on-time project delivery is a result of strategic thinking, detailed planning, careful resource utilization and effective supply chain management. But most of all it’s driven by our focus on meeting the needs of our clients.

Core services

Most firestopping projects involve the application of firestop materials around through-penetrations, joint systems and/or perimeter barriers.  All three applications prevent fire and smoke from advancing through the linear openings in fire-resistive assemblies that were altered by the installation of electrical, plumbing or mechanical items. These systems also restore the hourly rating* of the floor and wall assemblies where they’re applied.

We use only approved firestop materials, and are trained to install products from all firestop manufacturers.

Custom services

In situations where something other than tested firestopping is required, Equivalent Fire-Resistance-Rated Assemblies (EFRRA), commonly called engineering judgments, can be used to facilitate a custom solution. They are appropriate only when a tested system doesn’t exist for the project, and are approved by the Authority having jurisdiction (AHJ).

Engineering judgments can only come from the manufacturer, third party labs, a fire protection engineer, or a professional engineer. Nelson Firestopping will work with you to help procure engineering judgments, and install a system according to the design specified.

To learn about projects we’ve done, click here.

* An ANSI/UL rating system that determines the time it will take for fire (F), air(L), heat(H) or water(W) to breach the assembly.