Bases perform the important function of creating a support for skylights and opening systems and solving problems of in ltration in docking between the roof and the covering. The type of base, which can be sheet metal or berglass, is identi ed in relation to the structural type of a roof. Sheet metal bases are usually used for at roofs subject to waterproo ng with bituminous or PVC sleeves. Fiberglass bases are mainly used on Greek fret or corrugated coverings where the difference in slope and the conformation itself require adequate sealing, faithfully copying the Greek fret or covering corrugation waves.
Attention to the perfect construction and assembly of these products is essential for the achievement of excellent results. Steel sheet bases are con- structed, conforming material to a “C” shape so as to create a support foot and a plane to receive skylights and pro le frames. PRFV ( berglass) bases are built on suitable models, designed according to the type of roo ng. They require an accurate process which combines design, implementation of the model and moulding. Poliform Lucernari possesses a wide range of models that are adaptable to most coverings on the market. Tailor made models can be built upon customer requests.