In today's commercial real estate market, the importance of selecting an appropriate roofing system cannot be overstated. Given the variety of options available, along with the critical factors of durability, energy efficiency and cost, the decision-making process is more complex and crucial than ever.
Below, we aim to provide business owners and property managers with the nuances of commercial roofing, focusing on the interplay between roof types and their suitability for various commercial applications, from professional offices to industrial environments.
Built-up roofing membrane (BUR): classic and economical
The BUR system, also known as “hot mop roofing,” is known for its alternating layers of hot tar and gravel. The number of layers affects durability and (ultimately) cost. This approach offers homeowners a good mix of affordability and flexibility. Its ability to withstand foot traffic and its UV-resistant properties make it suitable for buildings with heavy rooftop equipment.
Despite its advantages, the lifespan of BUR roofing is one of the shortest and it can be difficult to identify the source of the leak as the roof ages. This means that if you live in a rainy or snowy area, you may want to keep reading, as these challenges may warrant consideration of the building's long-term viability.
Thermosetting EPDM membrane: resilient and low maintenance
Ethylene Propylene Diene Terpolymer (EPDM) is a durable, roll-based synthetic rubber membrane. Also known as thermoset roofing due to the way its adhesion is activated by heat, an EPDM roofing system can come in white or black rolls of single-ply rubber. This makes EPDM systems durable in the face of many common solvents such as alcohol or acids, so for manufacturing environments or sensitive locations this can be an attractive distinction.
However, its EPDM has significant aesthetic limitations and presents a particularly worrying vulnerability to punctures. If you are in an area with a lot of debris falling from branches or tree limbs, this should be weighed against any of its functional benefits.
PVC and TPO Thermoplastic Membrane: High Performance in Adverse Conditions
Thermoplastic polyolefin (TPO) and polyvinyl chloride (PVC) roofing systems are resistant to harsh conditions. Ultraviolet light, chemicals including fats and oils, or bacterial growth are slow to damage these types of roof membranes. They are lightweight, heat-reflective, and puncture-resistant, a welcome improvement on the EPDM option mentioned above. Other impressive benefits include strong air-welded seams, fire resistance, and tolerance to high temperatures and high winds.
Unfortunately, you need to be careful with cheap and poorly made products. Since TPO became so popular, many small manufacturers have tried to create their own product lines, allowing quality to slip through the cracks. Make sure you purchase this type of product from a reputable manufacturer or product representative.
Spray coverings: innovative and ecological
Spray polyurethane foam (SPF) is a material that starts as a liquid spray that instantly expands into a foam, which hardens into a solid layer. This particular eco-friendly roof is applied over an existing roof, and although it is not very well known, it has been around since the early 1960s.
An SPF roofing system waterproofs and adds an insulation factor. It can be used in any climate and lasts up to 50 years with correct installation and maintenance. However, the installation window for this specific type of roofing is limited to favorable weather conditions (no snow, no ice, no water), and once installed, SPF roofing must be inspected once or twice a year.
Metal Roofing: The Durable and Versatile Choice
Metal roofs stand out for their exceptional useful life of 40 to 60 years, making them a privileged choice for commercial properties looking for long-term solutions. Its versatility is evident in the variety of materials available, such as corrugated galvanized steel, aluminum and copper, meeting different aesthetic and functional needs.
Modern metal roofs incorporate protective coatings to mitigate corrosion, increasing their sustainability and durability. This is good because they are commonly used in areas that receive several feet of snow each winter, so they are constantly being tested. Some systems even come with built-in solar panels or snow removal systems so you can avoid the need for commercial ice dam removal services every snowfall.
However, its susceptibility to aesthetic corrosion requires careful material selection and regular maintenance, especially in adverse environmental conditions. Choose the material that best adapts to your environment.
Green Roof: Ecological and Aesthetic
Green roofs not only improve the aesthetic appeal of a building but also contribute to environmental sustainability. They offer excellent insulation, reduce urban heat islands and improve air quality. The initial investment and ongoing maintenance of green roofs are balanced by potential utility savings and government incentives.
However, let's be real, their complexity and need for regular maintenance can be a deterrent for some commercial projects that prefer a much less wraparound roof. If these gardens are not looked after at regular intervals by a proper caretaker, they can quickly go off track and become unsightly.
Tile roof: traditional and economical
Although most commonly associated with residential properties, tile roofing can also be applied to commercial buildings with steep roofs. Its ease of installation and affordable price make it an attractive option for smaller commercial properties or those with specific architectural styles. Key considerations for tile roofing include its susceptibility to environmental growth and a generally shorter lifespan compared to other types of commercial roofing.
Making the Right Choice for Your Commercial Property
When selecting a roofing system for your commercial building, consider not only the initial installation cost, but also long-term maintenance, energy efficiency and durability. Factors such as visibility, foot traffic, chemical exposure and weather conditions will guide you toward a roofing solution that not only protects your investment but also increases the value and performance of your commercial property.
Different climates and different types of building use SHOULD affect your choices.
Each type of coverage offers unique benefits and challenges, making it essential to align your choice with your property's specific needs, including climate exposure, building usage and aesthetic preferences.
