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Passive Fire Protection
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Passive Fire Protection - Lorient

Lorient is an acknowledged world leader in sealing systems for door assemblies embracing fire protection, smoke control, acoustic insulation and weather exclusion. The company also manufactures a complementary range of fire resistant glazing systems for doors, screens and partitions, together with fire and smoke resistant air transfer grilles for doors, walls and ducts.

With extensive third party approvals and recognized quality procedures, the company has a well-deserved reputation for innovation, technical excellence and product quality. This is vigorously maintained and constantly improved by a total commitment to research and development.


1. Acoustic, Smoke and Fire Seals

  • A comprehensive range of high performance acoustic, smoke and fire seals.
  • The unique co-ordinated designs provide protection against the infiltration of sound, smoke and fire at all temperatures.
  • Manufactured to the highest standards, supported by independent third party approvals.
  • Independently verified for durability and fitness for purpose.
  • An extensive range of colours and finishes, with in-house colour matching facilities and a comprehensive range of sizes including customized requirements to suit all applications.
  • All Lorient seals have an unobtrusive printed identification, ensuring accountability for quality and performance.


2. Fire and smoke resistant damper/Intumescent air transfer grilles

Air movement in a building is important. Stale air is bad for both the building and its users - so to ensure good ventilation, grilles are fitted into walls and some doors; and ductwork keeps fresh air circulating.

But wherever air moves, fire and smoke can travel too. Where ductwork passes through different areas of a building, it provides an easy path for fire and smoke to spread.

Our intumescent grilles and fire dampers combine air movement with fire protection. In everyday use, air can pass freely through the grilles to allow good ventilation. In a fire, the intumscent expands, fusing the grille into a solid block that stops fire spreading.

Intumescent dampers maintain fire compartmentation. So wherever ventilation is needed through a fire-resisting wall, a fire damper should be fitted. Where ductwork runs through that wall, a fire damper needs to be fitted inside the ductwork at that point.

Smoke protection is also vital. We offer a range of intumescent grilles and dampers with an added smoke control shutter: our Talkback system. Linked to the fire alarm, the shutter closes at the first sign of a fire, stopping fast-moving cold smoke from passing through the grille.


3. Fire resistant glazing systems

Glazing in fire doors and screens is an important safety measure. It lets people see hazards ahead, including fire and smoke.

But adding glazing to a door creates a point of weakness. Where the timber and glass meet, fire can take hold. Also, without support, the glass can quickly slump and fail in the extreme heat of a fire.

Lorient’s intumescent glazing systems hold the glass firmly in place. In everyday use, this stops the glass from rattling. In a fire, the glazing channel or strip expands, preventing the glass from slumping. It also stops heat transferring to the timber, so fire cannot take hold around the edges of the glazing aperture.

Our systems include a glazing channel or strip, beading, and in some cases an intumescent liner. Glazing can be only installed in a fire door if the test evidence permits; and systems should always be installed exactly as stated.

Your choice of glazing system depends on the application (door or screen), fire resistance, and glass type