Typically commercial roofing projects are Low-Slope systems which are usually constructed of three main components. The first is a weatherproofing layer which is the most important to a roof and building because it is the main layer of protection from the most damaging natural elements. The second is a reinforcement layer. This increases the strength of the roof and helps with puncture resistance and roof stability. The third and final layer is the roofs surface. The surfacing component protects the other elements from water, sunlight and other damaging effects. Other surfacings can provide increased hail and fire resistance, and solar reflectivity.
There are five main classifications of Commercial and Low Slope roofing; built-up roof membrane, Single-ply which include Thermoset and Thermoplastic membranes, Polymer-modified, Spray polyurethane and Metal panel roofing systems, each of which has it's own advantages. Be sure to discuss the correct membrane for your roof with your roofing contractor.
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