How To Build A Flat Deck Roof

Building a deck over a flat roof is very similar to building a deck over a concrete patio.

How to build a flat deck roof.

Frame up a box the size of the outer dimensions of your deck using 2. How to build a roof over a deck step 1. So i will not be able to put the sleepers parallel to the slope. That means there are 4 slopes leading the rain or melted snow water to the drain.

These decks are often referred to as floating as they are not secured in place as a stand alone structure. For additional stability you can also use steel joists that are built into one or both of the walls. As a result most decks have inadequate footings to support a new porch roof. Step 1 simplify the project.

A reliable roof membrane and details that minimize any damage to the. Step 3 prepare the materials. May 7 2014 before we look at how to build a deck on a flat roof here s an example of what not to do as debris settled into the cracks of the gravel roof it became a muddy sponge and the sleepers became dams with big rains. This will provide the surface for you to attach the decking.

Build the frame of the roof on the ground. Step 5 add handrails. This will give additional stability to the roof structure. The footings for porch decks must be larger than deck footings.

Hi thanks for the interesting blog. Step 4 assemble the deck. The joists of the deck as with most flooring will be set out on 16 inch centers. Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber.

First you must make sure the roof is strong enough to support 55 lbs per square foot. There are tons of reasons to build a deck over a roof from creating a romantic outdoor breakfast nook off a second floor master bedroom to providing a second floor porch on a city house. The standing water eventually seeped through and rotted the frame. Porch decks require 25 additional psf for roof loads for a total of 80 psf.

How to build a deck on a flat roof. Lift the box. Step 2 order materials. To simplify a construction.

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Typical decks are designed to support 55 psf lbs per square foot. Then you will install sleepers or flat 2x6s laid flat every 16 on top of the roof surface. They are merely placed on top of another structure.

Many porches use 22 diameter corner and intermediate. Building a deck over a flat roof is very similar to building a deck over a concrete patio.