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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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MELAMINE IS CARCINOGENIC CATEGORY 2

Based on scientific evidence that melamine may cause cancer and damage to organs through prolonged or repeated exposure, since 1 December 2023 melamine has been classified and labelled as Carcinogenic Category 2 – H351 (1).

Melamine is one of the most traditional components of intumescent paints, a key component of almost all formulas used throughout the world since the sixties.

Being identified as a substance for which there is scientific evidence of probable serious effects to the human health, on 7 February 2024, melamine has been also listed by ECHA among the substances recommended for inclusion in Annex XIV(2), that lists Substances of Very High Concern (SVHC), and it was proposed to prioritise such inclusion (3).

Offering products to create a safe and healthy environment has been always our commitment; fire protection cannot be achieved to the detriment of the health of those who apply fire protective systems and those who will live or work in that environment.

That’s why AITHON A90H, widely used to protect concrete and steel structures in many countries, not only grants Class A+ air emissions but, like all our products, is totally  MELAMINE FREE.

(1) According to the harmonised classification and labelling
(ATP18) approved by the European Union.

(2) Date when the 12th draft recommendation for inclusion
in Annex XIV to the REACH Regulation was published on the 
ECHA website.

(3) ECHA – Draft background document for melamine of 
7 February 2024
melamine is carcinogen category 2