What are intumescent grids and how do they protect us from fire Diaterm

Discover how intumescent grilles prevent the spread of fire and smoke, maintaining safe ventilation in buildings and technical spaces.
 Reixeta intumescent en un conducte de ventilació segellant el pas del fum i el foc en un edifici modern — Imagen generada por IA
Intumescent grille in a ventilation duct sealing the passage of smoke and fire in a modern building

Intumescent grilles are the solution that allows normal ventilation to be maintained, but that close automatically when the temperature rises too much, thus preventing the spread of fire. This combination of safety and functionality is increasingly essential in the construction and maintenance of safe buildings.

What are intumescent grilles and how do they work?

Intumescent grilles are ventilation elements that incorporate a special material that, when exposed to high temperatures, expands rapidly. This phenomenon completely blocks the passage of air, smoke, and fire, acting as an effective barrier against the spread of fire.

Intumescent material: their secret

The core of the grille is a chemical material that reacts to heat. When the temperature exceeds a certain limit, this material grows to many times its original volume, sealing the grille and preventing any passage of gases or flames.

Operation under normal conditions

In situations without fire, the grilles allow usual ventilation without interference. This means they do not compromise the air quality or the comfort of the spaces where they are installed.

Where are intumescent grilles used and why are they essential?

The most vulnerable spaces in case of fire are those with connections between different sectors or with air ducts that can facilitate the spread of fire and smoke. Intumescent grilles are mainly installed in:

  • Fire doors, to maintain the integrity of fire-resistant closures.
  • Partition walls between risk sectors, to prevent fire from passing from one area to another.
  • Ventilation ducts, which otherwise could be a direct path for fire.
  • Technical rooms and spaces with critical equipment, where safety is key.

Passive safety in buildings

The installation of intumescent grilles is a pillar within passive fire protection, a system that acts without the need for human intervention and improves the overall safety of buildings.

Benefits beyond fire protection

Besides their essential function, these grilles contribute to maintaining air quality and proper ventilation, preventing problems of humidity or poor air circulation, which can also affect health and comfort.

How Diaterm provides solutions in passive protection with intumescent grilles

Diaterm is a benchmark in the distribution of products for thermal insulation, acoustic insulation, and passive fire protection. Through its division Diaterm FOC passive fire protection, it offers comprehensive solutions for the installation of systems that protect spaces and people.

Intumescent grilles of proven quality

The catalog of intumescent grilles they offer is designed to adapt to different needs and environments, always guaranteeing optimal performance in case of fire.

Professional advice and installation

One of Diaterm’s added values is the expert support they offer to clients, from technical advice to professional installation, ensuring that each element complies with regulations and functions efficiently.

Protect your spaces against fire with reliable and professional solutions from Diaterm

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Intumescent grilles are a key element for maintaining safety in buildings and facilities. They allow proper ventilation and, at the same time, act as an effective barrier in case of fire. Thanks to the technology and professionalism of Diaterm, this protection is accessible and reliable for different sectors and needs.