08/20/2026
✨ Thermafiber duct wrap phases ✨
This uses high-temperature mineral wool insulation to help maintain the required fire-resistance rating around ductwork. When properly installed as part of a tested system, it can help limit heat transfer and reduce the risk of fire spreading through duct pe*******ons into neighbouring spaces.
And the details matter.
✔️ Correct number and overlap of layers
✔️ Properly treated seams and joints
✔️ Secure mechanical fastening/banding
✔️ Continuous coverage around the duct
✔️ Proper termination at the pe*******on
✔️ Installation according to the specified tested/listed system
It isn’t simply about wrapping insulation around a duct. The entire assembly has to be installed according to its listed design for the fire rating to perform as intended.
Passive fire protection is mostly hidden once construction is finished…but in a fire, these systems are designed to buy valuable time by helping contain fire and heat to the area of origin.
Installed right. Inspected right. Built to perform when it matters. 🔥