More Picture Of How To Build A Roof Under A Deck HD Image Size. A perimeter frame and graduated spacer-nailers are fastened beneath the deck joists so that the plane of the ceiling slopes slightly at least 14 inch per foot away from the house toward the joist header. Compact the stone with a hand tamper.
Then run perpendicular lines to complete the perimeter crossing the masons line at the corners. First mark all the purlin locations on the deck joists. Cover the graded area under the deck with geotextile fabric.
Square the corners using the 3 45 method.
If youre on the hunt for materials you can easily use corrugated. Install the purlin along the house and the outer purlin. Gathering Materials For The Drainage System. How To Build An Under Deck Roof Under Deck Design.