uPVC (unplasticised polyvinyl chloride) is a rigid plastic widely used in modern window frames. In Australia, it’s especially popular for energy-efficient homes due to its superior insulation and weather resistance.
Key Features
- Thermal Performance: Naturally insulates against heat transfer, helping achieve higher energy star ratings under the NCC.
- Weather Resistance: Won’t rot, swell, or corrode — ideal for coastal and humid climates.
- Low Maintenance: No painting required; only occasional cleaning.
- Design Options: Comes in various colours and foiled finishes, though generally bulkier in profile than aluminium.
- Durability: Long lifespan; resistant to termites, salt, and UV when properly manufactured.
Pros
- Excellent thermal and acoustic insulation.
- Strong durability in all climates.
- Minimal upkeep, long service life.
- Affordable compared to composite systems.
Cons
- Thicker frame profiles reduce glass area.
- Limited colour/finish choice compared to aluminium.
- May not suit heritage or premium design aesthetics.
Best For
- Energy-efficient new builds and retrofits.
- Homes in coastal or high-exposure environments.
- Owners seeking performance and durability with very low maintenance.