You have several options when it comes to flat roofing materials. Whether you need to replace a roof, repair, or overlay, there are things to consider before choosing the right material. The size, exposure, labor needed, and look you are trying to achieve will all influence which material is best. Each of the main types of flat roof material have advantages and disadvantages, so read on to find which will work best for you.
Flat Roofing Materials
Polyvinyl chloride is one of the most widely used flat roofing materials. It is made from processed petroleum and salt, and comes in large rolls with a bottom ply as well as a weathering film and tough acrylic finish. PVC is durable and can last up to 30 years with proper installation and maintenance. PVC is fire-resistant and can withstand strong winds. You also get top waterproofing as PVC provides watertight conerave across the roof and can prevent bacteria and mold growth. You also save money on energy bills, because most PVC roofing is whie and will reflect the sun away from your building.
EPDM, or Ethylene Propylene Diene Monomer, is a single-ply rubber system that is fitted without seams. This makes it simple to install and because it uses glue, the finish is smooth and clean. The perimeters of the EPDM roofing are adhered using a wet bonding and a stronger contact adhesive. The trims are fitted to leave a clean finish. EPDM is lightweight but tough and can last up to 50 years with proper cleaning and maintenance. You also do not have to worry about leaks as this roofing system has great waterproofing properties.
Modified bitumen roofing involves tar mixed with fillers such as limestone or sand. These fillers provide tear resistance. SBS (styrene-butadiene styrene) is a polymer that can also be used as filler. This synthetic rubber additive allows for faster application and greater flexibility during cold seasons. Modified bitumen is multi-layers which gives durability. The base layer is attached to the roof and an adhesive attaches the additional layers. Granules are placed as the final top layer for aesthetic purposes and to help reflect sunlight. With proper care, bitumen roofing can last for up to 20 years.
Built-up roofing is one of the oldest materials used and uses several layers to provide durability and longevity. Special roofing felt that has been ingrained with asphalt and embedded in bitumen is applied in layers using a hot mop. Hot tar mixes with the bitumen soaked felt to create a strong membrane, and this layering process continues until you have between two and four plies. Granules are also applied to the top layer for added durability and protection from UV damage and weather.
Thermoplastic Polyolefin (TPO) is a popular heat-reflective roofing material that is applied using heat-sealed seams for a smooth finish. LArger commercial buildings can benefit from this roofing as air conditioning costs can be high, but the TPO helps reduce heat absorption through the roof. TPO is also lightweight but durable and a great option for those with a budget. The laminated surface is easy to clean and difficult for mold to stick too. TPO is not ideal for hot climates as the seams can crack easily.
When looking to repair, replace, or overlay your flat roofing, the choice of materials will make all the difference. You need to consider budget, weather, and your priorities when picking the material. There are a number of options and we are here to help you find the one that works best for you. We have all the options and the tools and accessories you need for premium installation and roofing care. So call us today.