Posi-joists -

So next time you walk across a room that feels unnaturally still, with no creak and no shudder, remember: the secret is hiding in the steel zig-zag below. That’s the Posi-Joist, doing its silent, brilliant work.

For decades, the soul of a house was written in its floor joists: solid chunks of timber, creaking under the weight of time. But step into a modern build or renovation today, and you might notice something different. Look up at the ceiling of the basement or down through the unfinished floor, and you’ll see a lattice of steel and wood—a truss-like web that looks more like a bridge than a floor. posi-joists

While the timber chords will char in a fire, the steel webs conduct heat quickly. Consequently, fire resistance periods (e.g., 30 or 60 minutes) are usually achieved by specifying: So next time you walk across a room