TPO (Thermoplastic Polyolefin) roofing is a single-ply flat roofing membrane composed of a blend of polypropylene and ethylene-propylene rubber. It is designed to provide a seamless, waterproof barrier for flat and low-slope structures.
In British Columbia’s climate, TPO roofing offers several distinct advantages:
- Energy Efficiency: The membrane features a highly reflective white surface that can reflect up to 80 percent of sunlight. This reduces heat absorption during the summer and can lower cooling costs by up to 20 percent.
- Durability and Weather Resistance: TPO is resistant to UV exposure, punctures, and tears. Its thermoplastic nature allows it to flex during freeze-thaw cycles without cracking. The seams are fused using hot-air welding, creating a bond stronger than the material itself to prevent leaks during heavy rainfall.
- Cost-Effectiveness: TPO is often more affordable than alternatives like PVC, with installation costs typically ranging from $2.50 to $4.50 per square foot. It offers a long lifespan of 20 to 30 years with minimal maintenance needs.
- Environmental Benefits: The material is fully recyclable and has low volatile organic compound (VOC) emissions, supporting sustainable building practices and green building certifications.
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