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UNIVERSITY OF NAVARRE

CLT fire protection

The challenge was protecting from fire the huge surface of the glulam and CLT structures without affecting the natural atmosphere created by the raw wooden surface.

AITHON ATR24 was the solution. Specifically developed to achieve Class B-s1-d0 on glulam and CLT, the best performance according to the latest BS EN 13501-1 fire safety standard, this transparent coating leaves the timber surface looking like untreated. Beyond fire protection, AITHON ATR24 grants Class A+ air emissions and BREEM compliancy.

The building with a large central courtyard has a structure that consists of glulam beams and columns, complemented by internal vertical and façade enclosures, as well as CLT (cross-laminated timber) panel floors. The creators claim that the project is made with wood that is regenerable and 100% emissions-absorbing.

Beyond the wood, the new Faculty of Health Sciences in Navarre will be "energy-positive, not using fossil fuels, and will produce more energy annually than it consumes for heating, cooling, ventilation, and lighting.

The building, designed by the Pamplona-based architectural firms Bryaxis and VArquitectos, contains nearly 10,000 square metres of timber surface.

CLT and LT fire protection with AITHON ATR24 transparent intumescent coating
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La Gare Maritime – LT and CLT structures

Fire protection of LT and CLT structures: la Gare Maritime

This architectural marvel, designed as a bustling city district shielded under magnificent steel roofs, stands as the grandest Cross Laminated Timber (CLT) project in all of Europe and AITHON PV33 has been chosen to protect its wooden structures in case of fire.

The historic railway station was reborn as a captivating covered cityscape from the visionary minds at Neutelings Riedijk Architects. Offices, shops, cafés, and restaurants seamlessly interwoven with ample public spaces, create a vibrant urban oasis where it never rains – a city within a city. The use of CLT, or Cross Laminated Timber, not only lends a warm and natural aesthetic but also expedites construction through prefabrication and a dry building process.

But Gare Maritime is not just a testament to modern design; it champions sustainability with circularity at its core. Modular building elements and the repurposing of original paving stones showcase a commitment to minimizing environmental impact. The entire structure is energy neutral and fossil-free, boasting solar cells on glass facades and an extensive 17,000 m2 of solar panels on the roofs. Geothermal energy and rainwater reuse further underscore its eco-friendly ethos.

Wander through the wooden pavilions that form a mosaic of boulevards, streets, parks, and squares seamlessly blending with the surroundings. A central public space boasts a climate that evolves with the seasons, while a pedestrian promenade, reminiscent of Barcelona's Ramblas, connects charming interior gardens adorned with 100 trees.

Marvel at the interconnected pavilions, linked by sculptural oak stairways gracefully crossing over the streets.

It's not just aesthetics; every detail is considered, including the stringent fire resistance requirement for timber floors. AITHON PV33, a carefully chosen solution, ensures not just safety but elegance, with successful fire tests conducted on prefabricated floor specimens.

Gare Maritime is more than a renovation; it's a transformation, an urban symphony where history meets innovation, and sustainability harmonizes with style. Welcome to a city reborn – Gare Maritime, where architecture tells a compelling story of reinvention.

CLT and LT fire protection with AITHON PV33 transparent intumescent coating