Roof Structure Plan

Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years.

Roof structure plan.

Anything more than 9 in 12 is considered steep. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. Roof framing in this chapter we will introduce you to the fundamentals of roof design and construction. Conventional slope roof range between 4 in 12 and 8 in 12.

It is often compared to slope but is not exactly the same. Place a piece of the plywood on the bottom corner of your roof making sure the edges are on a rafter beam. Use 1 2 in 1 3 cm plywood to cover the entire surface of your roof. Double roof with hipped end there are many designs and combinations of double roofs.

But before discussing roof framing we will first review some basic terms and definitions used in roof construction. Roof shapes differ greatly from region to region. Roof terminology is also not rigidly defined. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Another common design in the northeast is the saltbox which is a gable roof with one longer side. Hip roofs tend to be stronger than gable roofs but there is an increased cost in building a hip roof as it s a more complicated structure that requires more building materials and effort. Steeper sloped roofs are considered more aesthetically pleasing and last longer. The design of the roof will depend upon the size and shape of the ground fl oor plan of the building.

Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss. In modern double roof construction the whole of the roof is constructed of lightweight roof trusses called trussed rafters see module 4. Such roofs are built with mostly timber take a number of different shapes and are covered with a variety of materials. These benefits do not come cheaply though.

These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular. Although ceramic tile roofs are expensive they can have a life span of over 100 years. In many cases with purchased house plans the details of the roof construction including rafter design are included. A low slope roof is anywhere from 2 in 12 to 4 in 12.

Use construction nails 6 in 15 cm apart to secure the plywood around the outer perimeter and along each support. Put roof sheathing on top of your roof. Usages vary slightly from region to region or from one builder or architect to another. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering.

A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof.