prior to installing a sleeper deck, the roof should be inspected by a roofing contractor to ensure that the roof is in good enough shape to allow for a deck. the deck frame is assembled so that the deck surface is level. this requires some shimming of the deck that is typically done using foam board insulation that will not harm the roof surface.
warm roof build ups can be installed on most modern construction material types such as concrete, timber and timber based sheets. they can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks.
below is an easy-to-follow manual for building flat roofs, including a guide to flat roof framing and installation with plenty of details and specifications about the frame. if you want a diy flat roof, here are the steps to follow. step 1: frame the roof.
how to build a deck on a flat roof step 1 - simplify the project. the joists of the deck, as with most flooring, step 2 - order materials. if you order the lumber from a major hardware store and let them know step 3 - prepare the materials. set two of the 16 foot boards on each side step
rebuilding a rotted deck on a flat roof. decks, outdoor living, porches and gazebos may 22, 2013 sonia. by rob robillard. a client recently asked if i would replace her badly worn-out roof deck. this wooden deck was built over her screen porch and on top of a flat roof.
hoist the trusses onto the roof. this can be done either with many pairs of hands, or with the assistance of a crane. trusses are often spaced 12, 16, or 24 inches apart. your spacing will depend on building codes and how much weight snow the roof will have to hold.
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ponding water issues. ideally your roof should have a positive slope, with a fairly flat surface no indents . it is optimal to have 1/4 per foot pitch on any flat roof. however, that isnt always the case. foundations settle, rafters bend, or door openings are too close to the roof surface to increase the slope.