Fire Rated Doors

Fire rated doors are designed to delay that process.

Fire rated doors are used when a building needs to contain a fire long enough for people to get out safely.

That’s the entire purpose.

Not decoration. Not style. Time.

These doors are built and tested to withstand fire for a specific period. Most commonly that’s 30 minutes or 60 minutes, although higher ratings exist for certain industrial buildings.

The rating simply tells you how long the door has been proven to resist fire under controlled testing conditions.

During a fire, heat rises quickly and smoke spreads even faster. Ordinary doors fail early. Frames twist. Gaps appear. Flames push through.

Fire rated doors are designed to delay that process.

The door itself is usually constructed from heavy steel skins wrapped around a fire-resistant internal core. This core slows heat transfer and helps the door hold its shape as temperatures rise.

Around the edges of the door you’ll usually see thin strips set into the frame.

These are intumescent seals.

They don’t look like much at first. But when exposed to heat they expand dramatically, filling the small gap between the door and the frame. That expansion helps block smoke and hot gases from moving through the doorway.
Which is important.

Smoke often spreads faster than flames.

You’ll see fire rated doors installed in many different parts of a building.

Apartment stairwells.

Office corridors.

Service risers.

Electrical rooms.

Plant rooms.

Fire escape routes.

Anywhere a fire compartment is required.

Contact our team today to discuss your needs

The idea is simple — if a fire starts in one section of the building, it should not immediately spread to the rest.

Fire rated doors create those boundaries.

Installation matters just as much as the door itself. A fire rated door must be fitted into the correct fire rated frame, with approved hinges, seals, and self-closing mechanisms.

If the door doesn’t close properly, the system fails.

That’s why most fire rated doors are installed as complete assemblies rather than separate parts.

When everything is fitted correctly, the door becomes part of the building’s fire protection system.

Quietly doing its job.

Until the day it might be needed.

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