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The roof of a commercial building is its first line of defense against the elements, and its integrity is critical to protect the investments and assets within. Knowing when and how often to replace a commercial building roof is essential to maintain the structural integrity of the building and prevent costly damage and building downtime.
There are many factors which impact how long commercial roofs may last before needing replacement.
The type of roofing material used plays a significant role in determining how long a commercial building roof will last. Each material has its own lifespan and maintenance requirements. For example, EPDM roofing, composed of synthetic rubber, resists deterioration and offers a 20 to 25 year lifespan. PVC roofing, with a higher initial cost, boasts energy efficiency due to its reflective white surface and fire-retardant qualities, and generally lasts 25 to 30 years. TPO roofing, a newer and eco-friendlier choice than PVC, is cost-effective, but only offers a lifespan of 20 to 25 years. Besides single ply roofing, there is the traditional 4-ply built up roof and modified bitumen roofing systems, life cycle of these roofs depends on the initial system design, application and manufacturer warranty programs.
The local climate and weather conditions can have a substantial impact on a roof's lifespan. Intense sunlight, heavy rainfall, ice, extreme temperatures, and severe weather events such as hailstorms can cause immediate damage and speed up deterioration. Ontario's harsh winters and hot summers can mean a roof replacement may be needed sooner.
The design of the roof can affect its longevity. A well-constructed roof with proper drainage systems can help extend its lifespan by preventing water pooling, which can lead to leaks and structural damage. Many commercial buildings have flat roofing, which can make drainage difficult, so proper design and installation is essential to prevent pooling.
How well a new commercial roof was installed has a big impact on lifespan. A poorly installed roof may experience premature wear and tear, and require replacement sooner than expected. Hiring an experienced and reputable commercial roofing company for a proper installation is recommended.
Regular maintenance can greatly extend the lifespan of a commercial building roof. Neglecting routine inspections, cleaning, and repairs allow small issues to develop into major issues. A proactive maintenance plan and prioritizing early repairs helps to keep a commercial roof in good condition; professional roof inspections can help with identifying and prioritizing repairs.
There are several signs a roof needs to be replaced, and not simply repaired.
Water stains on the ceiling or walls, as well as persistent leaks, are clear signs that the roof's integrity has been compromised. Water damage can lead to more extensive issues within the building, making timely replacement essential.
If an inspection shows visible roofing material damage, including cracked, bubbling or blistered, curled, loose, or missing roofing materials, the roof has likely reached the end of its lifespan. These issues mean the roof system is no longer able to protect the building and keep out the elements sufficiently. A sagging or bowing roof is a structural concern that requires immediate attention. There may be underlying damage to the roof's supporting structure so a complete replacement is needed.
If you find yourself frequently having to repair the roof, it may be more cost-effective to replace it. Frequent repairs add up, and the overall condition of the roof will continue to deteriorate, making it more costly to keep and repair.
Finally, an aging or damaged roof can lead to poor thermal insulation and increased energy costs. If your utility bills have increased with no other explanation, a commercial roof replacement and enhanced insulation may help.
Knowing when and how often to replace a commercial building roof is critical. By staying proactive and well informed, you can make better decisions regarding the replacement of your commercial building's roof.
Set a schedule of regular inspections to monitor your commercial roof's condition. Professional inspections can identify issues early, allowing for timely repairs or replacement planning.
Replacing a commercial building roof is a major expense. Create a long-term budget that accounts for future replacement costs, based on the anticipated lifespan of your roof.
Consult with a commercial roof consulting firm to assess the current condition of the roof and get a professional opinion on its remaining lifespan. They can provide valuable insights into the best roofing materials and systems for your building to help it last longer, and help with budgeting for the replacement.
Be sure to consider the long-term needs of your commercial property. If you plan to occupy the building for many years, investing in a durable, long-lasting roof is recommended. Also, when planning ahead, stay on top of all relevant local codes and legislative requirements, so you are prepared for any changes.
A commercial roof typically lasts an average of about 20 years. However, with high-quality materials and proper installation, it can last for up to 30 years, while lower-quality roofs may require replacement in as little as ten years. If your commercial roof approaches the 20-year mark, it's wise to start considering replacement to prevent further deterioration and costlier repairs.
Also, whenever you encounter any roof damage or problems, assess the extent of the issue. Determine if a simple roof repair fully addresses the issue, or whether a full roof replacement is needed to avoid future concerns? If there are only minor damages, be sure to complete any roof repair as soon as possible, to avoid the roof condition from worsening and needing a replacement after all.
However, if your roof has sustained significant damage, it is better to proceed with a complete roof replacement without delay, or the rest of your building is likely to be damaged.
Accent Building Sciences Inc. offers commercial roof inspection services in Ontario. We specialize in professional roof design, inspection, and specification services for facility owners, commercial clients, and municipalities. We assess roof system performance, vulnerabilities, and repair needs, with accurate, high-quality inspections. We also guide our clients on service life and replacement schedules, so they can make informed decisions, and avoid costly repairs, replacements, and other risks. An inadequate roof assessment may lead to higher costs and safety risks.
Naji Hassan, a renowned professional in Building Science and Engineering, brings a wealth of knowledge and experience to his field. Educated at Beirut Arab University and Harvard Business School Online, Hassan has honed his expertise in structural and municipal engineering, building science, and business management. As the President of Accent Building Sciences and an experienced Senior Project Manager, he has made significant strides in building envelope engineering, building condition assessments, and energy retrofit programs. His commitment to innovation and excellence is evident in his approach to large-scale project management and his active participation in industry organizations. Hassan is not only a leader in his field but also a prolific writer and thought leader. He regularly shares his insights and experiences through articles on LinkedIn, which can be found at LinkedIn Articles. Additionally, he maintains a blog where he delves deeper into various aspects of building science, accessible at Accent Building Sciences Blog. Outside of his professional pursuits, Hassan enjoys travel, golf, languages, gardening, and music, reflecting his diverse interests and well-rounded character. Naji Hassan's journey in building science and engineering is not just a career but a testament to his lifelong dedication to learning, teaching, and inspiring others in his field.
