Materials To Do A Built Up Roof

Bitumen ply sheets and a surface material such as asphalt or gravel.

Materials to do a built up roof.

The three types of bitumen material used most commonly in built up roofing systems are asphalt coal tar or cold applied adhesive. This combination results in a finished membrane. The built up roof is generally a flat roof or a low pitched roof which is made of a number of levels. Built up roofs may be either surfaced or un surfaced.

Installation of built up roofs occurs in four steps. There are two main types of built up roofs and each is categorized by the binding agent or bitumen that is used. Here s a layer by layer explanation. Bur is used on flat or low sloped roofs and consists of multiple layers of bitumen and ply sheets.

Most built up roofing is comprised of three parts. The gravel and tar built up roof is the one most commonly known. The bitumen can be either hot meaning it is heated so that it liquefies during installation or it can be cold which is more like an adhesive and is not heated. A wide variety of roof coverings exist today each with its own advantages depending on the use.

Built up roofing contains three materials. A gravel and tar built up roof is exactly that layers of gravel and asphalt laminated felt on top of a flat roof. Asphalt and coal tar pitch are the bituminous materials used in built up roofing. The most common roofing materials available include asphalt wood metal clay cement and slate glass and plastic and plastic liquid coatings.

First contractors attach base sheets to the roof s subsystem using roofing nails. Bitumen material ply sheets and one or more surfacing materials. These membranes are usually made of several layers alternating between bitumen and reinforcing fabrics tpo and epdm are single layers. Coal tar is the more durable of the two bitumen products and is made using by products of coal production.

It consists of an impervious membrane assembled from layers of bituminous saturated felt which are cemented to each other and to the roof deck with bituminous cement usually asphalt or coal tar pitch. Asphalt is less durable but often less expensive and is a by product of petroleum manufacturing.