Low Slope Roofing
Built Up Roofing
Built up roof membranes, referred to as BUR, have been in use in the U.S. for more than 100 years. These roof systems are commonly referred to as "tar and/ or gravel" roofs. BUR systems generally are composed of alternating layers of bitumen and reinforcing fabrics that create a finished membrane.
Modified Bitumen Roofing
Modified Bitumen roof system membranes are composed of multiple layers, much like BUR membranes. Unlike BUR roof systems, the top or final layer of modified bitumen is a modified cap sheet that may or may not have a granulated coating.
Incorporates principal polymers that are chemically cross linked or vulcanized. Once they are cured, they only can be bonded to similar materials with adhesives, and can be installed fully adhered, mechanically attached, or ballasted. Most EPDM membranes do not receive surfacing.
TPO/ PVC Roofing
Thermoplastic materials are distinguished from thermoset materials in that there is no chemical crosslinking. They can be repeatedly softened by heating or hardened when cooled. Because of the materials' chemical nature, thermoplastic membranes typically are seamed by heat welding with hot air.
Spray Polyurethane Roofing
SPF-based roof systems are constructed by mixing and spraying a two-component liquid that forms the base of an adhered roof system, and it can be installed in various thicknesses to provide slope to drain. A protective surfacing is then applied to the foam to provide protection from the elements.
Cold Applied Coatings
Typically, they are comprised of a resin, a carrier solvent, reinforcing fillers, and optional reflective pigments. Upon application, the carrier solvent evaporates from the coating, leaving a cured, water resistant film.
Metal Panel Roofing Steep Slope
There is three general categories of metal roof systems used for steep-slope roofing applications: architectural metal panel, structural metal panel, and metal shingle/shingle panels. Generally, architectural metal panel roof systems are water shedding and are intended for use on steep slope roofs.
Clay/ Concrete Tile
Clay tile is produced by baking molded clay. Tiles may be glazed and also may have surface texture treatments applied; there are a wide variety of choices available. Concrete tiles are made of portland cement, sand and water in varying proportions.
Roofing slate is a dense, durable, naturally occurring material that is essentially nonabsorbent. The color of slate is determined by its chemical and mineral composition. Because these factors differ in various regions. In addition, exposure to weather causes slate to change color.
Wood shakes and wood shingles are manufactured from western red cedar, cypress, pine and redwood trees. Shakes are split from logs and reshaped by manufacturers for commercial use. They are thicker at the butt end than shingles; generally one or both surfaces are split to obtain a textured effect.
1) Base materials, either organic felt or glass-fiber mat, that provides support for the weather-resistant components and gives it strength; 2) asphalt and fillers; 3) surfacing material, generally in the form of mineral granules, that provides protection from impact and UV degradation and improves fire resistance.