When it comes to selecting the perfect double glazed units for your home, one of the most crucial decisions you’ll face is choosing the frame material.

The frame not only affects the aesthetics but also plays a significant role in energy efficiency, durability, and maintenance requirements.

Glazed units

Various frame materials available for double glazed units

uPVC (Unplasticized Polyvinyl Chloride)


  • Energy Efficiency: uPVC frames offer excellent thermal insulation, helping to keep your home warm in winter and cool in summer.
  • Low Maintenance: They are easy to clean and require minimal maintenance, making them a popular choice among homeowners.
  • Durability: uPVC frames are resistant to moisture, rot, and pests, ensuring a longer lifespan.



  • Natural Beauty: Wooden frames provide a warm, classic aesthetic that complements various architectural styles.
  • Insulation: Wood offers natural insulation properties, helping to regulate indoor temperatures.
  • Renewable Resource: Sustainable and eco-friendly options are available, making wood a greener choice.



  • Strength: Aluminium frames are incredibly durable and strong, which allows for larger window openings and slimmer sightlines.
  • Low Maintenance: They are resistant to corrosion and require minimal upkeep.
  • Modern Aesthetic: Aluminium frames offer a sleek and contemporary appearance.



  • Combines Strength and Insulation: Composite frames typically consist of a mix of materials, such as wood and aluminium, providing the best of both worlds in terms of strength and insulation.
  • Low Maintenance: They are low-maintenance, much like uPVC frames.



  • Durability: Fiberglass frames are highly durable and resist warping, rot, and pests.
  • Energy Efficiency: They offer good thermal insulation, helping reduce energy consumption.
  • Low Environmental Impact: Fiberglass is eco-friendly and can be recycled.



  • Affordability: Vinyl frames are often more budget-friendly compared to other materials.
  • Low Maintenance: They require minimal upkeep and are resistant to moisture and insects.
  • Energy Efficiency: They offer decent insulation properties.

Factors to Consider When Choosing

  • Climate: Consider your local climate. If you experience extreme temperatures or high humidity, you’ll want a frame material that can withstand these conditions.
  • Aesthetics: Think about the architectural style of your home and your personal design preferences. Each material offers a different look and feel.
  • Budget: Determine your budget for window frames. While some materials are more affordable upfront, others may offer long-term savings in energy efficiency.
  • Maintenance: Consider how much time and effort you’re willing to invest in frame maintenance.
  • Sustainability: If environmental impact is a concern, look for sustainable and recyclable frame materials.


Choosing the right frame material for your double glazed units is a decision that will impact your home’s comfort, aesthetics, and energy efficiency. Each material has its own set of advantages, so it’s essential to weigh your priorities and consult with a professional to find the perfect fit for your specific needs and preferences.

Whether it’s uPVC for energy efficiency, wood for timeless beauty, or aluminium for a modern look, the right frame material can enhance your living space and add long-term value to your home.

Commercial Glazing

Glazing From Specialists Prentice Glass

From bespoke glass design to glass floor panels, we do a bit of everything! Prentice Glass are a glazing company based in London. We offer high-quality service and create long-standing relationships with all our clients.