Are Drafty Windows Costing You?
As winter sets in across the UK and temperatures begin to drop, many homeowners instinctively turn up their heating to keep their homes warm and comfortable. But what if your rising energy bills aren’t just the result of colder weather?
For countless households, the real culprit is drafty, outdated, or poorly insulated windows that quietly let heat escape.
At Custom Glaze, we understand that creating a warm, energy-efficient home starts with high-quality windows. Whether you’re looking to reduce your utility costs, improve comfort, or simply modernise your home, ensuring your windows perform at their best is essential.

The Hidden Cost of Drafty Windows
Drafty windows may seem like a minor inconvenience, perhaps you’ve noticed a chilly breeze near the frame or a room that never seems quite warm enough.
But the impact on your household energy use can be surprisingly significant. A substantial amount of heat generated inside your home is lost through poorly insulated or ageing windows. That escaped heat has to be replaced, which means your heating system works harder and for longer.
This extra workload doesn’t just drive up your energy bills. Over time, it can also place unnecessary strain on your boiler or heating system, potentially leading to higher maintenance costs and a shorter lifespan for your equipment. What feels like a small issue today can become a costly long-term problem if left unchecked.
Drafty windows can also reduce the comfort of your home in other ways. Cold patches near the glass, noticeable breezes, and even increased external noise can make certain rooms less enjoyable to spend time in. And if you’re conscious of your household’s carbon footprint, heat loss through windows is an important factor to address.

Evaluating the Energy Loss
To appreciate the impact of window efficiency, it helps to break down how heat escapes:
Single-glazed windows offer very little insulation. Because there is only one pane of glass between your warm home and the cold outdoors, they allow heat to escape quickly. Switching to modern double-glazed units can make a dramatic difference to your annual heating costs.
Worn seals, gaps, and ageing frames all contribute to air leakage. Even if your windows look fine at first glance, older designs simply can’t match the performance of newer energy-efficient options. These gaps not only let cold air in but also allow warm air to escape, creating an endless cycle of wasted energy.
Outdated materials, such as older aluminium frames that lack thermal breaks, can conduct heat away from your home. Modern materials like uPVC are specifically engineered to help retain warmth and prevent temperature transfer.
All of these factors combine to undermine your home’s energy efficiency, and the impact is felt directly on your heating bill.

Here’s how you can benefit from upgrading:
Replacing old or drafty windows with modern double or triple glazing is one of the most effective ways to improve your home’s energy performance.
At Custom Glaze, our high-performance uPVC windows are designed not only to meet industry standards but to exceed them, ensuring you get maximum value from your investment.
Here’s what you can expect when you upgrade:
- Lower environmental impact
- Lower energy bills
- More consistent comfort
- Reduced noise pollution
- Increased property value

Make the Smart Choice
Upgrading your windows isn’t just a financial decision; it’s an investment in your comfort, your home’s longevity, and your overall quality of life.
At Custom Glaze, we offer tailored solutions designed to complement your home’s style while delivering exceptional energy efficiency. Whether your property is modern, traditional, or something in between, we can provide window options that blend seamlessly with your home’s existing character.

Get In Touch
If you’re ready to put an end to chilly drafts and start saving on your energy bills, we’re here to help.
Contact Custom Glaze today to discover how our high-quality, energy-efficient windows can transform your home. Request a quote, explore our full range of products, or speak with a member of our team about the best options for your needs.
A warmer, quieter, more sustainable home is within reach, and upgrading your windows is one of the smartest steps you can take. Visit our website to learn more and begin your journey toward a more comfortable living space today.