Welcome to STI Firestop – Specified Technologies Inc.

STI leads the industry in developing innovative fire protection systems that help stop the spread of fire, smoke and hot gases.

At STI, we’re more than a firestopping company—we’re a team driven by purpose. Our mission is to provide innovative, cost-effective firestop solutions that protect lives and property.

We foster a culture built on integrity, respect, flexibility, and teamwork—where personal growth, professional development, and even fun are part of every day.

Explore opportunities to grow your career, make a difference, and be part of a company that values both performance and people.

Join us in building safer, smarter spaces—together.