Properly designed gravel surfaces may also provide high fire ratings. They are frequently covered with pea gravel other stone for protection from the sun and weathering. Layers of felt or another synthetic fabric are mopped together with hot asphalt or coal tar. Built-up Roofing (BUR) Systemsīuilt-up roofing systems are so-named because they are basically constructed or “built” on the rooftop by the installing contractor. Following is a brief discussion of some of the primary commercial roofing systems on the market today. When it comes to roofing low slope commercial facilities, building owners and managers have numerous options. But a roof can eventually have changes in slope in places because of settling or flattening caused by heavy rooftop equipment or recurring ponding water. Proper roof design dictates that roofs have some slope to provide for drainage. It’s important to keep in mind that a “flat roof” isn’t perfectly flat. A large flat roof is unused real estate and solar panels can turn the area into a means of energy production. Solarįlat roofs are ideal for the installation of rooftop solar systems, because panels can be positioned to take advantage of the sun’s track across the sky.
#Flat roof systems residential install
Also, HVAC systems can be difficult or impossible to install on a steeply sloped roof. Rooftop HVAC EquipmentĬommercial buildings often have HVAC or other equipment on the roof because it’s a secure location and the HVAC system needs to be near the area it will heat and cool. If there are peaks, valleys, or other irregular features required, those add to the complexity and cost. On a large commercial building a sloped roof would be prohibitively expensive to build because of the amount of material it would take to construct the roof support assembly and the height it would reach.
They are built flat instead of steeply sloped like a residential roof for several reasons: Initial Construction Cost Commercial buildings are usually built with flat or low slope roof structures. It is important to consider the many options available to building owners for flat roofing systems. What’s the Right Roofing System for Your Low Slope Commercial Building?
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