Jump to navigation SITE EXPERTISE SOCIETY RECRUITMENT CONTACT Home > News > Les Zelles and the NF mark: a guarantee of quality for all PRODUCTS 05/27/2016 Les Zelles and the NF mark: a guarantee of quality for all Demand the NF mark , choose Zelles! The NF mark on Les Zelles joinery is a benchmark of trust and quality for professionals and the general public. Elle mesure et teste les caractéristiques de chaque produit et détermine un niveau de performance pour des critères de choix qui peuvent être déterminants pour votre confort : la résistance au vent, la perméabilité à l’air, l’étanchéité à l’eau, l’isolation thermique, l’isolation acoustique, l’effort de manœuvre, l’endurance à l’ouverture et la fermeture, la résistance et la solidité des éléments (résistance aux charges, aux torsions, solidité des dispositifs de sécurité). Each of these elements is tested according to standardized criteria and the tests result in technical ratings. Sometimes a little complicated to approach, they allow however, according to your projects, your objectives, your place of residence and the prevailing climate to choose the most efficient joinery, in an objective manner. Discover the NF benefits in more detail . All our professionals are at your disposal to inform you about the meaning of these technical data and to help you make the right choice. Find all this information on our video SEARCH FORM To research SITE EXPERTISE PRODUCTS AGENCIES & ACHIEVEMENTS NEWS SERVICES & DOCUMENTS CATEGORY BUSINESS PRODUCTS NEWS CONSTRUCTION SITES EVENTS LEGAL CHRISTMAS AND NEW YEAR LES ZELLES - GRAND CIRCUIT MASTERING ASBESTOS - MARSEILLE LES ZELLES - GRAND CIRCUIT RENOVATION OF CONDOMINIUMS - BOBIGNY LES ZELLES - GRAND CIRCUIT MASTERING ASBESTOS - LYON OUR ACHIEVEMENTS The Chancellery - Bourges (18) - DOWNLOAD LEXICONS <PREVIOUS NEWS < This week is our anniversary! Les Zelles increases its turnover by + 25% in the Languedoc-Roussillon and Midi-Pyrénées regions > NEXT NEWS> Manufacturer of PVC and Aluminum windows, Les Zelles offers a wide range of PVC and aluminum joinery, roller shutters, bay windows, doors. These aluminum and PVC windows are recognized for their thermal, acoustic and aesthetic qualities in the new construction and renovation sectors. CONTACT RECRUITMENT PRESS AREA PARTICULAR USEFUL LINKS All the expertise of UFME for quality windows and doors NF Windows , support manufacturers of quality windows PROFESSIONAL AREA Username or Email Address * Password * Create a new account Request a new password This site is in responsive design LES ZELLES - head office ZI Les Ecorces - BP7 - 88250 La Bresse Phone: 03 29 25 53 11 Fax: 03 29 25 59 57 Legal notices Site map