What is Commercial Roofing?
Commercial roofing refers to the specialized field of roofing that deals with the installation, maintenance, and repair of roofs on commercial buildings. Unlike residential roofing, which typically involves smaller structures, commercial roofing addresses the unique challenges posed by large-scale buildings such as office complexes, industrial facilities, retail spaces, and more.
Key Aspects of Commercial Roofing:
Materials Used:
Commercial roofs are constructed using a variety of materials, each chosen based on factors like durability, cost-effectiveness, and energy efficiency. Common materials include single-ply membranes (TPO, PVC, EPDM), built-up roofing (BUR), modified bitumen, metal roofing, and green roofs.
Design and Structure:
Commercial roofs are often flat or low-sloped, as opposed to the steep-sloped roofs commonly found in residential settings. This design choice is influenced by the need to maximize interior space and accommodate large HVAC systems, while also considering factors such as drainage.
Installation Techniques:
Installation of commercial roofing systems requires specialized skills and equipment. Roofing professionals use various techniques, such as heat welding for single-ply membranes or hot asphalt for built-up roofing, to ensure the integrity and longevity of the roof.
Weather Resistance:
Commercial roofs must withstand a range of weather conditions, including heavy rain, snow, hail, and extreme temperatures. The selection of appropriate materials and proper installation techniques is crucial to ensure the roof's ability to resist water infiltration and other environmental challenges.
The Role of Water in Commercial Roofing:
Drainage Systems:
Proper water drainage is critical for commercial roofs. Flat or low-sloped roofs are susceptible to water pooling, which can lead to leaks, structural damage, and even the collapse of the roof. Commercial roofing systems incorporate effective drainage systems, including gutters and downspouts, to direct water away from the roof.
Waterproofing:
Waterproofing is a fundamental aspect of commercial roofing. Many commercial roofing materials are designed to be water-resistant or waterproof to prevent water from seeping into the building. This is essential for protecting the structural integrity of the facility and preventing interior damage. However, after 20/30+ years the original instal begins to break down(some sooner than others) and a seamless coating system or a new single-ply needs to be installed to reinforce the integrity of the roof and building. This will add a few decades of life to the roof and in many cases the owner will receive a favorable warranty that ensures the customers concerns are being taken care of.
Maintenance and Inspection:
Regular maintenance and inspection of commercial roofs are crucial to identify and address potential water-related issues. This includes checking for signs of leaks, inspecting seams and joints, and ensuring that drainage systems are functioning correctly. Prompt repairs are essential to prevent water damage. Seams and joints are common for leaks and in many cases ice damming and intense weather is the culprit. You can also find issues with the screw or fasteners and units that sit on top of the roof because they create avenues for water to get inside the building.
Energy Efficiency:
Water plays a role in the energy efficiency of commercial roofs. Reflective roofing materials, such as cool roofs, can reduce the absorption of sunlight, lowering the overall temperature of the roof. This not only helps in managing indoor temperatures but also contributes to energy savings by reducing the need for excessive cooling and heating.
In conclusion, commercial roofing is a specialized field that addresses the unique challenges posed by large-scale buildings. Water management is integral to the success of commercial roofing systems, and proper design, installation, and maintenance are essential to ensure the longevity and functionality of these roofs in diverse weather conditions.
