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Built-up roofing (BUR) is a popular choice for commercial and residential buildings in areas that experience heavy snowfall. Its layered structure offers several advantages that make it suitable for cold, snowy climates.
What is Built-up Roofing?
Built-up roofing consists of multiple layers of bitumen (asphalt or coal tar) alternated with reinforcing fabrics such as fiberglass or felt. These layers are bonded together to create a durable, waterproof membrane that protects the building from water infiltration and weather damage.
Advantages of Built-up Roofing in Heavy Snowfall Areas
- Excellent Waterproofing: The multiple layers provide superior waterproofing, preventing leaks caused by melting snow and ice.
- Durability: BUR systems are highly resistant to harsh weather conditions, including heavy snow loads and freeze-thaw cycles.
- Low Maintenance: The robust construction reduces the need for frequent repairs, which is beneficial in snowy regions where access can be difficult during winter months.
- Thermal Insulation: When combined with proper insulation, BUR helps maintain interior warmth, reducing energy costs.
- Ease of Repair: Damaged layers can be easily patched or replaced without removing the entire roofing system, which is advantageous after heavy snowfalls.
Additional Considerations
While built-up roofing offers many benefits, it is essential to ensure proper installation and regular inspections. Snow accumulation should be managed to prevent excessive weight and potential damage. Additionally, integrating snow guards and ensuring proper drainage can further enhance the roof’s performance during winter.
Conclusion
Built-up roofing is an excellent choice for buildings in heavy snowfall areas due to its durability, waterproofing, and ease of maintenance. Proper installation and upkeep will ensure that the roof provides reliable protection against winter weather for many years.