How Long Does a Modified Bitumen Roof Last?
Typical Lifespan
Under ideal conditions, it is possible for a well-cared-for modified bitumen roof to last for 15 to 20 years. The following factors may make that variable. Some modified bitumen roofs may outlast based on proper care and maintenance.
Influencer on Lifespan
Several factors will determine how long a modified bitumen roof will last:
- Material Quality: The life expectancy can be remarkably extended by using high-quality materials, such as base flashing, base sheet, and top surfacing.
- Correct Installation: A modified bitumen roof is installed properly with much detail to it and according to the instructions of the manufacturer can outlast one that has been installed poorly.
- Maintenance: Regular roof inspections with routine cleaning and repairs.
- Climate: Severe weather conditions may include extreme heat and cold or heavy rainfall that can quicken the degradation of a roofing system.
- Leaks: Water marks on the ceiling or walls show a leakage. Blistering or bubbling is often a symptom of an adhesive bond failure within the roof. Cracks or tears can lead to loss of integrity in a roofing material.
- Granule Loss: Heavy granule loss can reduce the UV resistance of the roof.
Conclusion
Modified bitumen roofing systems can be one of the most durable and cost-effective systems installed on commercial and industrial buildings. However, the service life will vary based on material quality, installation, maintenance, and climatic exposure. Knowledge of such factors and timely intervention, once the first visible signs of deterioration begin to show, can extend the useful life of modified bitumen roofs.
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