How To Build A Flat Deck Roof

Step 1 simplify the project.

How to build a flat deck roof. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. As a result most decks have inadequate footings to support a new porch roof. This will give additional stability to the roof structure. I am also planning to make a deck on my flat roof but i have some questions.

The footings for porch decks must be larger than deck footings. Then you will install sleepers or flat 2x6s laid flat every 16 on top of the roof surface. These decks are often referred to as floating as they are not secured in place as a stand alone structure. First you must make sure the roof is strong enough to support 55 lbs per square foot.

To simplify a construction. Step 4 assemble the deck. Typical decks are designed to support 55 psf lbs per square foot. Step 2 order materials.

For additional stability you can also use steel joists that are built into one or both of the walls. Hi thanks for the interesting blog. They are merely placed on top of another structure. How to build a deck on a flat roof.

Step 3 prepare the materials. That means there are 4 slopes leading the rain or melted snow water to the drain. Build the frame of the roof on the ground. Step 5 add handrails.

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. The thing is that the roof draining is through a hole in the center of the roof. Frame up a box the size of the outer dimensions of your deck using 2. Building a deck over a flat roof is very similar to building a deck over a concrete patio.

So i will not be able to put the sleepers parallel to the slope. Lift the box. Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber. No matter the reason the keys to a long lasting deck above a living space are the same.

The joists of the deck as with most flooring will be set out on 16 inch centers. Building a deck over a flat roof is very similar to building a deck over a concrete patio. Porch decks require 25 additional psf for roof loads for a total of 80 psf. Many porches use 22 diameter corner and intermediate.

A reliable roof membrane and details that minimize any damage to the. This will provide the surface for you to attach the decking.