Flat roof is a low-slope roof that is widely used in residential and commercial buildings. It is strong and flexible, and can last for 30 years. Easy to install than pitched roof, flat roof is manufactured either from concrete or timber.
Based on material, the global flat roofing market can be segmented into built-up roof (BUR), modified bitumen, rubber membrane, thermoplastic polyolefin (TPO), polyvinyl chloride (PVC), cold applied liquid membrane, and metal roof. In terms of application, the flat roofing market can be divided into residential, commercial, and industrial. BUR is a traditional roof made by utilizing gravel and hot tar. It is one of the cheapest roofs available in the flat roofing market which is ideal for deck applications.
It possesses certain characteristics such as excellent fire & wind resistance. BUR is quite heavy and difficult to install. On the other hand, modified bitumen is easy to install and contains light-colored mineral surface, which helps reflect much of the heat, thereby lowering energy consumption. Rubber membrane is manufactured by using ethylene propylene diene monomer (EPDM). These membranes are easy to install and possess excellent properties such as high resistant to tears and scuffs, waterproof, and lightness of weight. EPDM membranes are environmentally-friendly, as they are manufactured from recycled rubber. They insulate the roof against climatic conditions such as wind, water, and fire.
TPO is one of the green construction materials; it does not utilize plasticizer and offers excellent reflection properties that help in minimizing energy usage. TPO roofs provide resistance against UV radiation and are available in gray and white colors. PVC roofs are light in color and can be manufactured by reinforcing PVC with non-woven fiberglass or polyester. They contain plasticizers, which make them brittle during their lifecycle. Cold applied liquid membrane is proving an ideal choice of roofing, as it does not require heat sources during installation and provides excellent waterproofing during adverse climatic conditions. Metal roof is also gaining momentum in the construction industry due to its features such as high durability, recyclability, and insulation.
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