Flat roofs are those slope is less than 1 in 4 and use waterproof membranes also called low slope pitched roofs have slopes of 1 in 4 or greater and generally use shingles.

Types of roofing systems pdf. Hip a hipped roof has three four or more pitched planes depending on the shape of the house and all planes slope downwards from a ridge at the top of the roof. Click on a roof system for more information. Bur is found in many low slope residential and commercial roofing applications. The visible roofing can be made of asphalt tar rubber clay composite material wood metal cement or stone.

Residential roof types roof shapes roof types roofs in architecture roofing materials roofs as sustainable space energy star roof systems pitched roofs roof trusses roof rafters roof pitch. Modern construction methods make use of another type of roof structure and this is known as trussed rafter roofs see trussed rafter roofs. Flat roofs are common especially with commercial buildings. All these roofing materials are chosen for their ability to keep water out but each type has benefits and idiosyncrasies and costs that run from moderate to exorbitant.

There are five generic classifications of low slope roof membranes or systems. Metal panel roof systems for low slope applications. Module 3 sheet 5. Thermoplastic membranes e g pvc tpo thermoset membranes e g epdm spray polyurethane foam based spf roof systems.

Where you live may factor heavily in your roofing needs. Built up roofing bur this multi layer roof design is a proven system that has been around for generations. Built up roof bur membranes. Here we ll discuss types of flat roofing.

Polymer modified bitumen sheet membranes. Types of roof structure traditional roofs can be divided into three main types of structure. The two primary types of roofing we must consider are flat and pitched. Here are some of the most common ones used in australia.

Flat roofs are definitely the most simple roof to build because they have little to no pitch.

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