WTI panel is a sandwich constituted by a board of rigid phenolic foam faced on both sides by an aluminium foil. The high density foam, produced using top quality chemicals as well as CFC and HCFC free bowling agents, in line with the most recent environmental protection guidelines, is characterized by excellent stability and insulation properties. Moreover, the transparent coating on the aluminum foil itself makes them particularly resistant against UV rays and other weather agents. The particular close-cell chemical structure of the foam does not allow any water absorption. Moreover, accelerated ageing tests carried out in labaratory have shown that after 15 years the insulation of WTI panel will be reduced of 6% only. The aluminum foil also ensure the vapor barrier, with an Excellent value. The panels stiffness is greater than 350.000mm
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