Double Glazed Windows: What Are They?

Double-glazed windows consist of two glass panes separated by an inert gas, usually argon. Double-glazed windows provide significantly more insulation than single-glazed windows, thanks to their airtight seal.

This Increased insulation reduces heat exchange and stabilizes indoor temperatures. The heating and cooling system has less workload, and you’ll see smaller energy bills.

Importantly, they’re eco-friendly and cost-effective, reducing energy consumption and carbon emissions. The gap between panes provides insulation, minimizing heat transfer.

Though not cheap, they’re worth considering for a more efficient, money-saving, environmentally friendly home.

Are you planning to replace your single-glazed windows with a more secure, greener, money-saving option? Check out double-glazed window prices on GreenMatch or other website.

Double-Glazed Windows Benefits

The Energy Saving Trust says double-glazed windows can save UK homeowners up to £110 annually on heating bills. However, actual savings vary based on factors like property size, the type of glazing installed, and the type you’re upgrading from.

You install double-glazed windows for the same reason you wear a thicker coat in winter. It’s also like using a cozy to keep your tea warm while reading an interesting book. Studies show that double glazing can result in 50% less heat loss.

Aside from that, they’re super tough. Burglars have a harder time smashing them to enter your house when you’re away. But there’s more! Installing new windows could bump up the value of your home by up to 10% according to Propertyroad.

These superior windows decrease noise pollution twice as much as ordinary windows do. They’re exactly what you need if your house is in a noisy area. You can move to a quieter, probably more expensive neighborhood or find a way to shut out external chaos and love your home more.

You decide!

Besides that, these windows filter harmful UV rays so less sun reaches your curtains and sofa fabrics. Synthetic furnishings exposed to less sun fade slower and last longer.

How Double Glazing Reduces Greenhouse Gas Emissions

Better insulation helps retain heat. There’s less heat loss through windows, walls, and attics, lowering energy consumption. Consequently, your house needs less energy to keep you warm, reducing fossil fuel combustion. Thus, your contribution to greenhouse gas emissions lessens.

Double glazing creates an insulating barrier that reduces heat transfer between the inside and outside of your home. This makes it more energy-efficient and environmentally friendly.

Double Glazed Windows and Energy Rating Systems

When assessing double-glazed windows’ energy performance, professionals rely on two rating systems: the Energy Performance Ratings and Window Energy Ratings.

EPR evaluates energy efficiency based on heat loss and solar gain. It provides a metric known as the U-value or thermal transmittance; a lower value signifies better energy efficiency and insulation.

The WER system rates windows from A to G for easy comparison. A indicates highly efficient, while G means least efficient. Opting for higher-rated windows can help cut your energy bills and make your home more comfortable.

Installing Double-Glazed Windows: A Short Guide

Aesthetics and Design

Choose windows that match the architectural style of your home. Consider sightlines, sill options, and features that need to be respected, like materials or styles in conservation areas.

Material Type and Sustainability

uPVC double-glazed windows are typically the cheapest, while timber frames generally carry the smallest carbon footprint. Also, look for a low-VOC option, because it pushes fewer toxins into the environment. Carbon footprint-wise, wooden frames are your best bet, and old uPVC and aluminum materials can be recycled.

Proper Installation and Sealing Techniques

Installation and sealing techniques affect the efficiency and longevity of double-glazed windows. A FENSA-certified installer can help you address draughts, especially for period properties.

Maintenance and Replacement

Maintenance of the frame matters for longevity, with uPVC being the easiest to keep clean. Visible damage, draughts, and condensation indicate it’s time to replace or upgrade double-glazed windows. Typically, double-glazed windows come with a warranty of around 10-plus years for the frame and glass. Some companies offer longer or even lifetime warranties. Be sure to read the fine print to understand the terms and conditions.

Installation and Regulatory Considerations

Installing double-glazed windows in Conservation areas

Conservation areas often impose window modification restrictions. You certainly can replace existing windows with glazed ones, but you must plan the project carefully to preserve the building’s character.

For example, fitting high-performance uPVC double-glazed sash windows in an older home may not fully preserve the character and charm of the existing wood sash windows.

Double-Glazing on Listed and Period Buildings

Both listed and period buildings require permission before making changes to windows. However, the rules governing listed properties are more stringent. Non-intrusive options like secondary glazing, shutters, heavy curtains, and sealed blinds are viable for insulation. Learn the differences between listed and period houses here.

Double-Glazing Sash Windows

Common in period properties, sash windows often lack airtight seals and insulation due to their design. Upgrading options include sealed units with double glazing, retaining the original look.

You can use wooden frames as these can match the original quite closely. You could also use uPVC alternatives that look like the original material, provided no restrictions protect the original materials and methods used to make the windows.

Alternatives to Double-glazing Windows

If you can’t install double-glazing, consider non-intrusive window-glazing alternatives like secondary glazing, heavy curtains, or both. Fixing any draughts before making changes is always a good idea.

Finding Qualified Installers

Check FENSA’s website to find a local double-glazed window installer. Do they have great reviews? Do they meet the Minimum Technical Competencies?

Are they members of professional bodies like FENSA or CERTASS? Are they insured? The right installer ticks all these boxes. Plus, they’re FENSA-approved and familiar with building regulations in your area.

Now what? It’s time to take action!