Plys On Built Up Roof

Whether you re an experienced commercial roofer a steep slope roofer thinking of adding low slope services or just like to learn from the best you ll want to join gaf senior commercial training specialists dave scott and wally brown dave amp. These roofs have been used for well over a century and are made from multiple layers of reinforced fabric joined by a binding agent or bitumen each layer of fabric is known as a ply and higher numbers of plies are associated with more long lasting and durable roofs. Built up roofing also called bur is the most common roofing material used on low slope roofs.

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Asphalt coated fiber glass reinforcement mat.

Plys on built up roof.

Felts are produced in a standard width of 36 inches and metric width of about one meter. Built up roofing or bur is the most popular choice of roofing used on commercial industrial and institutional buildings. Gentech roofing provides free roof inspection services. Built up roofs generally are considered to be fully adhered if applied directly to roof decks or insulation.

Bur is used on flat or low sloped roofs and consists of multiple layers of bitumen and ply sheets. Low moisture excellent dimensional stability and resistance to rot make it an ideal replacement for organic cap sheets. Roofing felts are reinforced with either glass fiber mats or organic mats. Built up roofing for an average commercial roof it will usually cost between per 5 50 8 50 square foot in materials and labor to install a typical built up roofing system.

This price range can change depending on the materials you choose. B u r roof membranes tar and gravel a 4 ply roofing system involves roofing felts that are typically four plies composed of layers of. There are 3 main types of flat roofing systems. Glaskap is used as a cap sheet in a variety of built up roofing systems.

Call us at 905 270 6799 or complete this online form. What is a 4 ply roofing system. A built up roof bur is the most widely used material for covering flat roof surfaces. It is composed of alternating layers of reinforcing fabric and bitumen asphalt and is finished with a top layer of aggregate such as stone or gravel.

Provide protection to the underlying bitumen and membrane and have a low maintenance cost. Each system is designed to waterproof the roof and protect it from sun rain snow and more. Book your free inspection now. Bur is preferred for low slope or flat roofs because it creates a continuous sealed surface.

This prevent leaks mold and rot all of which can weaken the roofing structure and cause costly damage. Components of a bur system include the roof deck a vapor retarder insulation membrane and surfacing material. Meets the requirements of astm d 3909. Built up roof bur modified bitumen and single ply.

The reinforcing fabrics also are called roofing felts or ply sheets. Wally for the project kick off segment of the roofing it right miniseries on installing a commercial roof from start to finish.

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