How to choose glazing that cuts bills, carbon footprints, and keeps your home warm all year round

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When it comes to glazing your self-build, extension, or renovation project, it’s easy to feel overwhelmed by choice. Dan Smith, MD of architectural glazing specialist DWL Windows, Doors & Conservatories, helps you pick glazing solutions that don’t just look great, but keep your home warm and comfortable all year round.

1. Choose the right material
Smart Visofold various colours aluminium

For contemporary-style projects, there’s no substitute for high-quality aluminium – it’s sleek, stylish, and its slim, elegant lines maximise the intake of natural light. Choose aluminium frames that feature a polyamide thermal break (an insulating plastic core) for maximum energy efficiency.

It might surprise some, but for more traditional properties, one of the best materials is uPVC. Take Residence 9 for example: designed around the stringent Article 4 guidelines that govern which products can be installed in conservation areas, Residence 9 is a uPVC window system built to the exact dimensions of a nineteenth century timber sash window, while still delivering the energy efficiency of modern uPVC.

2. Check the U-Value

U-Values measure how quickly a product lets heat escape. The lower the number, the better the product’s energy efficiency. Building Regulations require all new windows to achieve U-Values of at least 1.6 – and for the best performance, you ideally want windows with 1.0 or less. Residence 9 achieves 0.8.

3. Don’t neglect the glass

Low-E (low emissivity) glass is the most thermally efficient available – letting in light, cutting heat loss and keeping energy bills manageable. Use double-glazing filled with Argon (an inert gas with greater density than air) to boost thermal efficiency even further.

4. Think about ventilation
Aluminium Atlas Skyroom conservatories orangeries

Particularly if you’re renovating, don’t forget about ventilation – new windows can drastically improve air-tightness, but you need some airflow to let out moisture and prevent mould. Prevent this by using products with trickle vents, designed to allow a small amount of controlled ventilation.

At DWL, we manufacture and install bespoke glazing solutions. For more advice on your next project, don’t hesitate to contact us online today.

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