Florida Built Up Roof

Built up roof systems are composed of either asphalt or coal tar pitch and are assembled on the roof top.

Florida built up roof.

Built up roofing also called bur is the most common roofing material used on low slope roofs. Crrc directory of rated products. 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. When a final energy star coating is properly installed on a built up roof average summertime temperatures can drop by 60 100 degrees.

Built up roofing bur more commonly known as tar and gravel or hot mop roofs is one of the oldest and most reliable commercial roofing systems for low slope or flat roof structures. Surfacing materials protect the membranes and help protect the roof from uv degradation. After the felts have been installed a surfacing material such as slag or gravel aggregates are set into place. A built up roof in sunrise florida that features a reflective coating can be considered a cool roof.

Fl 477 built up roof systems. Bur consists of alternating layers of bitumen asphalt with layers of roofing felt creating a durable multi layer membrane that can resist the harshest florida summers. Fl 15692 synthetic roof underlayments. Commonly referred to as tar and gravel roofs bur consists of layers or plies of roofing felts between which asphalt or bitumen is applied.

Its multiple layers provide added protection and perform well in punishing weather conditions. Built up roofs shall have a design slope of a minimum of one fourth unit vertical in 12 units horizontal 2 percent slope for drainage except for coal tar built up roofs that shall have a design slope of a minimum one eighth unit vertical in 12 units horizontal 1 percent slope. Energy star rated products list. Hud1225d flintlastic membrane roofing system.

Fibrous glass or organic rag felts are used in the installation. The installation of built up roofs shall comply with the provisions of this section.