5 Most Common Types of Commercial Roofing Systems

March 31 2020 0comment

5 Most Common Types of Commercial Roofing Systems

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If you’re planning to install a new roof or replace an old one for your commercial property, you must have wondered what commercial roofing types exist and which to go for. This is a major decision that requires proper attention to avoid installing a ‘wrong’ type. We’ve prepared a list of 5 most common commercial roofing types to help you make an informed decision. 

Before we get to the different types, note that your safety while on the roof is paramount and should never be taken for granted. Ensure you have installed the right fall protection system, such as post and chain barrier, before allowing anyone on the roof.


  1. Metal Roofing

Metal roofing is a popular commercial roof type due to its impressive lifespan of between 40 to 60 years. The common metal roofing materials include corrugated galvanised steel, coated/stainless steel, copper, aluminium, tin, zinc, and tile sheets. One downside with metal roofs is that they are susceptible to corrosion. Fortunately, most modern metal roofing systems have additional protective surface layers to manage damage from exposure, pollution, moisture, and other common environmental factors.

Other advantages of metal roofing include energy efficiency through recycling, good fire resistance, and their availability in a variety of colours. You can install metal roofing on top of the existing roofing because it’s rather light in weight. But ensure to first consult a contractor concerning the weight capacity of your roof and whether you’ll need to add a coating for waterproofing and rust and UV protection.


  1. Felt Roofing

Felt roofing systems are known for their long-lasting strength and durability. They can hardly be affected by UV rays or extreme temperatures. The installation of these systems is usually quick and efficient, especially when conducted by a professional. They are also resistant to leaks and tears and can withstand strong winds and rain.


  1. Single-Ply Membrane Roofing 

Single-ply membrane roofing is an extremely cost-effective roofing system comprising flexible synthetic polymer sheets, usually divided into synthetic rubber and thermoplastics. The system is ideal for refurbishing existing flat industrial or commercial roofing. It offers flexible usage in a variety of environments and situations. The systems are available in TPO, EPDM, PVC and elastomeric felt. These systems are 100% UV resistant, fire-resistant, and self-extinguishing. When applied with a hot air weld, it can protect against extreme temperatures and weather conditions.


  1. Green Roofing 

Green roofing is an eco-friendly roofing system that’s constantly gaining popularity owing to the amazing benefits it offers. It consists of a waterproof membrane covered by green plants. The vegetation helps improve air quality by reducing and eliminating greenhouse and air pollution gasses. It can also reduce summer temperatures inside the building and helps promote biodiversity. You and your employees can also have a green space to relax and rest. There are three types of green roofing systems: extensive, semi-intensive, and intensive green roofs. Green roofs usually have a lifespan of about 30 to 50 years. However, they require ongoing monitoring and maintenance.


  1. Liquid Applied Roofing

Liquid applied roofing offers a seamless waterproof membrane that’s joint-free to ensure total water resistance. Since it’s a liquid (mostly composing PMMA and polyurethane), you can readily apply it to any detail on your roof system. It has the potential to be used as an alternative to the other roofing membrane materials. It’s a cold-applied process, which means you’ll avoid the inconvenience and hazards of using hot-applied systems. It’s ideal for both liquid roofing repair and replacement.

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