Flat Roof Patio Framing

This will help you create a flat roof framing plan.

Flat roof patio framing.

In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. These decks are often referred to as floating as they are not secured in place as a stand alone structure. Patio cover plans building. When you are building a patio cover off of an existing roof or wall you must take all of your measurements from the point at which the patio roof will attach to the existing structure not the outside of the slab.

These traditionally styled roofs are made of wood and feature large supportive beams. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. These patio covers tend to look like an extension of the home s main structure. On two sides the roof abuts a parapet a short wall common around flat roofs as well as a wall for the third floor.

To keep water from pooling at these inside corners tom rips 2x4s lengthwise on a 45 degree bevel with a table saw. They are merely placed on top of another structure. A timber framed patio roof is perfect for your rustic or country home. You can do this with a foam layer that exactly fits your roof.

The tables below give maximum spans for rafters and beams. Building a deck over a flat roof is very similar to building a deck over a concrete patio. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. The figures are based on quality materials.

The existing slab can vary considerably throwing off crucial measurements. Flat roofs are always built at a slight incline at least 1 8 inch per foot. This is a completion video of a flat roof framing. The roofing material is more traditional such as shingles.

When framing a flat roof you will need to create a slight incline. Take four pieces of 4x4 lumber and cut them to the desired height of your patio cover keeping in mind that the footings will add a little extra height to the final product. Some roofs actually slope in several directions ensuring optimal water runoff. From there the flat roof system you choose will determine the materials you apply.

Put a cement footing at each corner of the intended patio roof space and attach anchors to each footing.