Purlins traditionally support the roof deck cladding sheeting and are in turn supported by the principal rafters steel beams etc.
Lightweight deck roof.
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Cast with 1 of concrete laminated to a 1 1 2 of expanded polystyrene foam these pavers have the look and feel of a full weight paver yet weigh in at roughly half the load.
With these top 40 best proper deck roof ideas you can indulge yourself and your company in the most sumptuous summer splendor.
Lightweight roof pavers were invented to follow the natural slope of the roof and where an existing roof or new roof construction requires a lighter load.
Beneath the roof cover structural concrete roof decks are commonly topside insulated using adhered insulation panels or cast in place lightweight insulating concrete.
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Lightweight roof framing roof systems a traditional purlin strictly by definition is a horizontal structural member in a roof.