TECHNICAL FEATURES I~ covERlife® CARACTERISTIQUES TECHNIQUES MECHANICAL RESISTANCE TO IMPACTS RESISTANCEMECANIQUEAUXCHOCS The capacity to absorb shocks due to accidental and natural impacts without breaking is one of the most important qualities of a roofing sheet. Hailfall during a storm results from the accumulation of instable hot air at high altitudes being crossed very rapidly by cold horizontal currents (-5·c / •20· Cl. The impact of hail depends on speed, size and weight of the hailstones and can seriously damage a roofing. The shock resistance of Cover-Life sheets to this type of impacts is excellent. Nevertheless, like any other product or material commonly used, they can suffer unpredictable harm in extreme weather conditions (hurricanes, cyclones, tornados, extremely violent winds, very strong hailstorms, etc.) despite the high standard technology design. Une autre condition fondamentale pour une plaque de couverture est sa capacite a absorber Les chocs d'origine accidentelle ou naturelle sans se casser. Les chutes de grele ont lieu pendant Les orages et dependent de /'accumulation d'air chaud instable dans lequel s'inserent, a haute altitude, des courants horizontaux d'air froid tres rapides (-5'C/•2o·c;. Les effets produits par le choc de la grele sur la couverture dependent de la vitesse, de la dimension et du poids des grelons, avec des consequences parfois graves pour la couverture. Les plaques Cover-Life offrent une capacite elevee a subir leschocs. FIRE RESISTANT AND SELF-EXTINGUISHING RESISTANCEAU FEU MATERIALS The safety of Cover-Life sheets has been tested and certified by the laboratory Cerisie (in conformity with the Home Office Departmental Circular Nr. 12 of 17,5.1980, which classifies "unconventional" materials used in the building industry). The methods that have been applied are the CSE RF 1/75/A concerning the "Reaction to fire of vertically suspended materials exposed to a flame of modest energy on both sides" and the CSE RF 3/77 concerning the "Reaction to fire of materials exposed to a start flame and radiant heat". Cover-Life sheets have obtained a certificate which classifies them into Category 1 ("A", the best possible) on the basis of the specific levels and values of both procedures. • Method CSE RF 1/75/ A: post-combustion time, postincandescence time, damaged area and burning droplets. • Method CSE RF 3/77: rate of flame propagation, postincandescence time, damaged area and burning droplets. According to the Method UNI 9177 the class of reaction to fire is 1. La resistance au feu est une notion fondamentale en couverture. Les tests effectues en laboratoire selon Les normes franr;aises en vigueur permettent de classer les plaques Cover-Life dans la categorie M1 (agrement CSTB pour la France, GERIS/£ pour 1/talie, MFPA pour l'Allemagne). PROCES-VERBAL OE CLASSEMENT DE REACTION AU FEU 01.!N MATERIAU _,,,_,.,_.,,,__ VNMll ! ..11 mM 9 It ...... nu ,._..,.,!~!' ~:r..1. __, CO'NU'I ~' ~:= :·:~_jJ_,_-_-____ DIMENSIONAL STABILITY DILATAT/ON/ STABILITEMORPHOLOGIQUE Temperature variations can cause trouble to roofing, framework and fixings. Cover-Life sheets reflect heat and have a very low thermal expansion coefficient (mm 0.042 per m/'C) also with important thermal variations. Thanks to the dimensional stability, long sheets up to m 13.50 can be installed as continuous roofing on industrial buildings (models Romana and Etruria) and sheets up to m 10-496 can be laid on residential roofings (sheet Coppo). 122 Les elevations de temperature peuvent avoir des effets nuisibles sur la couverture, la structure portante ou les elements de fixation. Grace a leur coefficient de dilatation thermique extremement bas (0,042 mm par ml/'C), les plaques Cover-Life offrent une capacite maximale a reflechir l'energie thermique et a garantir une stabilite dimensionnelle optimale. C'est pourquoi ii est possible de produire des plaques presentant des longueurs maximales de 13,50 metres pour la Etruria, Greca et Romana, de 10,496 metres pour la Cappo et de 10,260 metres pour la Olandese.
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