How To Build A Flat Roof Deck. Building a deck over a flat roof is very similar to building a deck over a concrete patio. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat.
How to build a deck on a flat roof. Step 1 simplify the project. First you must make sure the roof is strong enough to support 55 lbs per square foot.
Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber.
I am working on a roof deck 5 stories up in center city philadelphia 25 35 ft there are other deck near and next to this building and some of these decks are very dangerous and those decks belong out back of a 1 story home with a double step into the grass it is scary to look at some of these decks that have wood spindles held in with trim nails that are shot in from the outside. Build the frame of the roof on the ground. Step 4 assemble the deck. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat.