Building a Deck Under-Deck Roof. Rune installed gutters along the beams. The gutters slope to a downspout at the end. One option is to cover the deck boards with a watertight membrane. DeckRite makes a deck floor covering that has the added advantage of creating a dry space below the deck. For more information,
I have an exterior mezzanine that will have an occupied space below. This mezzanine needs to be completely watertight. The problem is that metal deck below the concrete and waterproofing above the concrete traps all the moisture of the slab inside.
TRBs National Cooperative Highway Research Program NCHRP Synthesis 425: Waterproofing Membranes for Concrete Bridge Decks documents information on materials, specification requirements, design details, application methods, system performance, and costs of waterproofing membranes used on new and existing bridge decks since 1995.
Deck frame from the ground up aluminum joists, beams, posts and stairs . Rooftop Deck System Class-A Fire Rated Roof Decking, Framing and Railing Versadeck rooftop decks include everything you need from the materials, design plans, installation instructions to technical support.
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