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uPVC (unplasticised polyvinyl chloride) window frames have been available in South Africa for decades, yet they remain relatively unknown compared to traditional aluminium options. Companies like JVI Development and TEVA Windows, in collaboration with REHAU, a globally trusted uPVC manufacturer, are working to change this. Together, they’re championing uPVC as a sustainable and high-performing alternative in the residential and commercial markets.
“Many clients still aren’t familiar with uPVC,” explains Pieter Malherbe, Managing Director of TEVA Windows, a REHAU partner and one of South Africa’s leading suppliers of uPVC and aluminium systems. “When people think of windows, they default to aluminium. But once we explain how energy-efficient, durable, and low-maintenance uPVC is, they quickly realise its value.”
The benefits of uPVC
The advantages of uPVC over traditional materials like aluminium and wood are extensive:
- Energy efficiency: uPVC is a non-conductive material, meaning it doesn’t transfer heat as aluminium does. This property significantly improves a building’s insulation, keeping interiors cooler in summer and warmer in winter. According to energy modelling by TEVA Windows, switching to uPVC windows can reduce peak energy usage by up to 60% and cut annual energy costs by around 25%.
- Low maintenance: Unlike wood, which requires sanding and painting, or aluminium, which can corrode, uPVC requires only occasional cleaning with water and mild detergent. It doesn’t rust, warp, or fade, making it ideal for South Africa’s harsh UV conditions.
- Durability and security: uPVC frames are engineered for toughness. They are fitted with steel reinforcements and multi-point locking systems, making them more resistant to break-ins than traditional frames. When combined with double glazing, these windows provide an unparalleled level of security.
- Noise reduction: uPVC windows can be fitted with double glazing and can reduce external noise by up to 38 decibels, creating quieter, more comfortable living spaces even in high traffic areas.
- Sustainability: uPVC is a greener choice. It is fully recyclable and requires six times less energy to manufacture than aluminium. Its durability means fewer replacements over the years, reducing waste.
Setting the standard for uPVC
Much of the trust in uPVC stems from the quality of manufacturers like REHAU. A German-based polymer specialist with over 75 years of expertise, REHAU has been producing durable, sustainable uPVC systems for decades. In South Africa, REHAU’s uPVC products have been installed for over 30 years, proving their resilience even in the country’s extreme climate.
REHAU uPVC systems are designed to outperform South Africa’s stringent building regulations, including the SANS 10400 XA energy usage standards. They incorporate innovative features such as double-glazing compatibility, fusion-welded corners for airtight seals, and UV-resistant formulations tailored for hot climates like South Africa’s.
“We’ve partnered with REHAU because their profiles are some of the best in the world,” says Malherbe. “They give us the flexibility to offer clients a product that balances aesthetics, performance, and sustainability.”
REHAU also supports partners like TEVA with technical expertise, including CAD detailing, thermal calculations, and CPD-certified training sessions for architects and developers.
Overcoming misconceptions
Despite its numerous advantages, promoting uPVC comes with challenges. “Aesthetics is often a concern,” Malherbe says. “Many people assume uPVC looks plastic-like or outdated. But modern profiles from REHAU offer sleek designs that rival aluminium in style and versatility.”
Another issue is awareness. “Architects and developers often lack information about uPVC,” he adds. “That’s why we actively educate the market, providing presentations and training. Once they understand its benefits, they’re on board.”
Some clients also worry about the ease of installation because it’s an unfamiliar material. However, Malherbe says, “If you can install a window, you can install a uPVC window – it’s no more complicated than any other system.” Plus, uPVC frames are known to be more robust during the construction process, withstanding site conditions better than other materials.
Ben Pierpoint, owner of JVI Development, also points out that uPVC is gaining traction in the luxury housing market. “High-end clients are increasingly prioritising energy efficiency and long-term savings. uPVC fits perfectly into this ethos,” he explains.
Real-world applications
The effectiveness of uPVC is evident in various projects. TEVA recently supplied uPVC windows for a 150-home development in Gauteng, replacing the originally specified aluminium. “The developer wanted a greener, more energy-efficient product. By switching to uPVC, they delivered better homes at no additional cost,” says Malherbe.
JVI Development has also implemented uPVC in the prestigious Waterfall Estate in Gauteng. “Where we have completed projects, homeowners have been thrilled with the look and feel, the smooth operation, the ease of cleaning without scratching, that the product is never hot nor cold like aluminium, and does not require maintenance like timber,” says Pierpoint.
The road ahead
With growing environmental concerns and rising energy costs, uPVC is positioned as the window frame material of the future. “Working with REHAU, we’re not only offering a superior product but also promoting sustainable and energy-efficient living.”
Pierpoint adds, “Clients are starting to see the bigger picture. uPVC delivers on aesthetics, and contributes to creating homes that are comfortable, secure, and future proof.”