PVC Roofing Systems
Material Composition: PVC roofing membranes are made of a synthetic thermoplastic polymer called polyvinyl chloride. The PVC sheets are reinforced with various additives and polyester or fiberglass for increased strength and flexibility.
Durability: PVC roofing systems are known for their exceptional durability and resistance to weathering. They have excellent resistance to UV radiation, ozone, chemicals, and fire. PVC roofs can withstand extreme temperatures, high winds, and hail, making them suitable for various climates.
Energy Efficiency: Like TPO, PVC roofing systems are designed to reflect sunlight and reduce heat absorption. They typically have a high solar reflectivity index (SRI), which helps to minimize heat transfer into the building, leading to energy savings and reduced cooling costs.
Installation: PVC roofing systems are installed using various methods, including mechanically fastening the sheets to the roof deck, adhering them with adhesive or hot air welding the seams together. Heat welding creates strong, watertight seams that are highly resistant to leaks.
Cost: PVC roofing systems tend to be more expensive than TPO systems, primarily due to the higher cost of the PVC material itself. However, the long lifespan and durability of PVC roofs can make them a cost-effective choice in the long run.
Maintenance: PVC roofs require regular inspections and maintenance to ensure their performance. Maintenance practices include checking for damage, ensuring proper drainage, cleaning the roof surface, and repairing any punctures or seams that may have become compromised.