Ventilation grilles with thermal break for window systems

Definition. Ventilation grilles with thermal break are systems designed to allow air renewal in building envelopes without causing energy losses, preventing direct heat or cold transfer between the exterior and the interior.

Why are ventilation grilles with thermal break necessary?

Most conventional ventilation grilles have a significant drawback: they create thermal bridges, which reduce energy efficiency and may cause condensation problems.

This type of ventilation grille incorporates an effective thermal break, improving the overall thermal performance of the window or façade system.

How the ventilation system works

1. 🌬️ Independent double mechanism
   The system consists of two thermally separated mechanisms: one interior and one exterior.
2. 🧼 Removable and serviceable components
   Both parts can be accessed and removed for cleaning and maintenance.
3. 🧲 Removable metal grille
   The steel grille can be extracted without dismantling the entire system.
4. 🧱 Plastic sealing stops
   These elements ensure airtightness and waterproof performance.

Installation options and compatibility

Ventilation grilles with thermal break offer flexible installation possibilities:

1. 📏 Customisable lengths
   The grilles can be cut to size according to the opening dimensions.
2. 🪟 Installation on window profiles
   Using a protective profile fixed to the window frame.
3. 🔲 Direct installation on glazing
   Via a T-shaped glass-holding profile.
4. ↔️ Compatibility with sliding window systems
   The system allows smooth sliding and overlapping of window sashes.

This type of solution is especially suitable for high-performance window systems, where any thermal bridge can compromise the overall energy efficiency.

Typical applications

1. 🏢 Energy-efficient residential buildings
2. 🏠 Window and façade refurbishment projects
3. 🧊 High thermal performance enclosures
4. 🌱 Sustainable and low-energy buildings

Manufacturers and available systems

There are specialised manufacturers that develop this type of technical solution. One example is
Renson, which offers ventilation systems integrated into window frames with thermal break.

Technical summary. Ventilation grilles with thermal break make it possible to ventilate interior spaces without compromising the thermal efficiency of the building envelope, combining airtightness, easy maintenance and compatibility with modern window systems.

Source. Article prepared by the Vilssa editorial team, specialised in architecture, construction and technical solutions for the building envelope.

To explore more content related to ventilation systems or thermal bridges, you can use the Vilssa search engine.

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