installers replace your windows

Your home’s windows do so much more than just let in sunlight and offer a view of the outdoors. They can help you save money on energy bills and make your home feel cosy. However, over time, windows can stop working correctly, which can cause problems like leaks, drafts, and higher energy bills, especially in colder months. But just how long can you expect your new windows to last before they need replacing again? The lifespan of windows varies depending on materials, quality of installation, and environmental factors.

How Long Do Windows Last?

Even the best windows don’t last forever. Generally, double-glazed windows need replacing after about 15 to 20 years, depending on the weather they have to withstand, and the materials used in their construction.

How to Know When to Repair vs. Replace Your Windows

So, how do you know when to replace your windows and when to repair them to save money? Installing brand-new windows can make your home look much better, lower your energy bills and make your home more comfortable. But repairing your windows can still be a good option in some cases. Here are some situations where window repair might be the way to go:

Broken window glass

A local window repair professional can replace the glass through window reglazing.

A component has broken

If your window has a broken locking mechanism or exterior drip cap, replace the faulty component instead of the entire window.

Preserving historic windows

In many old towns, there are rules about how the outside of your house, including the windows, should look. If your home has old, traditional windows made from strong, old wood, it might save you money to update them to keep heat in rather than getting new ones. These old windows can last for many years and appeal more to people who like historic features when it comes time to sell your home.

Expensive frame materials

If you have windows with frames made of costly materials like fibreglass, hiring a window repair professional to replace or repair any damaged glass, rather than replacing the entire window, is more cost-effective. This way, you can keep your current frames and save money on replacement costs.

When Should You Replace Your Windows?

How do you know when to replace windows? Below are our 10 signs to look out for that may mean your windows are past their prime. If you recognise one or more of these signs, it’s time to start thinking about replacing your windows.

When your windows are leaking

Leaking windows can lead to serious damage, such as warping the flooring beneath the windows to soaking the surrounding walls. These issues usually happen when window seals fail or due to improper installation. It can lead to high indoor humidity, water stains, and potential structural damage if left unchecked. Act fast and replace your windows if you notice any leaks to avoid future stress, time, and money.

When your energy bills are high

If your energy bills are increasing, it might be due to inefficient or older windows. They can make it harder for your home to stay insulated, leading to higher heating and cooling costs. Older, single-paned windows are less effective at keeping the heat in during winter and out during summer. If you feel a noticeable temperature difference near your windows or the glass feels cold to the touch, it’s a sign that you’re losing energy. High energy bills can be caused by windows that let air escape, making your heating and cooling systems work harder than needed. Replacing old windows with new, energy-efficient models can lower your energy bills and reduce the strain on your heating and cooling systems, leading to savings on maintenance and extending the life of these systems.

When your windows are visibly damaged

If you’re noticing any cracks or damage in your windows, it’s time to start thinking about replacing them. Cracks can lead to complete breakage and make your home more vulnerable to water seepage, mould, and pests. If you have wooden windows, moisture can cause the outside framing to rot, which is never good. If your window frames feel soft or spongy to the touch, it’s time to consider replacing them soon. Plus, damaged windows can make it easier for intruders to get in. Replacing a damaged window early on will help keep your family safe and prevent more expensive repairs down the line.

When your windows are drafty

Drafty windows can make your home uncomfortable and cost you more money than you think. In fact, it could increase your heating costs by up to 25%. Delaying window replacement to save money might cost you more in the long run due to increased energy bills. If caulking and weather stripping do not fix the problem, replacing the windows may be necessary. To detect drafts, you can feel for air movement around the window edges when closed and locked. Drafts could also be a sign of issues with the window’s closing or locking mechanisms, which could raise security concerns.

When your windows are difficult to open and close

Windows that won’t open are a sign that something’s not quite right. If you’ve tried cleaning and tinkering with them, but they’re still sticking, it may be time to consider getting them replaced. A jammed-open window can let in rain and wildlife, while a stuck-shut window is not great for getting fresh air or for emergency exits. Windows can become difficult to open due to being painted shut, warping in the heat, or if your house has shifted. Getting new windows can make your home more secure and comfortable.

When your windows are old

Older windows may still work but can be inefficient and raise energy bills. We recommend replacing windows that are over 20 years old. If you’ve lived in your home for decades and have yet to replace the windows, chances are they’re original to the house. Replacing your windows will keep you up to date with the latest window technology. For example, older windows are often made with pane glass, which means they may not be energy efficient even if they’re dual pane. However, modern windows keep air from transferring in and out of your home, which can help you save on energy bills. They usually come with coatings that protect against harmful UV rays, which can fade your furniture and floors and pose health risks. So, if your windows don’t have these features, consider an upgrade for protection and saving on your energy bills.

When your window isn’t soundproof

If you’re living in an old house, you might have noticed that the noise from outside is always creeping in. That’s because old windows aren’t good at keeping sound out. The noise-blocking power of a window is measured by its Sound Transmission Class (STC) rating. The higher the rating, the less noise can get through. Unfortunately, old single-pane windows score low, with 18-20 points. But modern windows can get up to 28-32 points, and there are even some super special windows with an STC rating of 48 for those noisy areas. So, if quiet is what you’re after, looking into newer, more soundproof windows might be the solution you need.

When you do not have double glazing

Have you ever noticed that your room becomes freezing in winter and a greenhouse in summer? It might be down to your windows. If they’re only single-glazed, that’s likely the culprit. Single-glazed windows just don’t cut it for keeping your home’s temperature comfortable. They’re not nearly as good at insulation as their double-glazed counterparts. So, it might be time to replace your windows.

Are you concerned about the cost? With our H2B Windows Grant Scheme, qualifying homeowners can upgrade their windows and doors to energy-efficient ones and cut down their energy bills, all for free. If you’re not eligible for the grant, don’t sweat it. Select UK-based installation companies work with Help 2 Buy Windows Scheme to help homeowners access home improvements that would otherwise be unaffordable to many.

Just fill in a quick form, and you’ll get quotes to compare, no strings attached. It’s a simple step towards a cosier, more energy-efficient home.

When you’re selling your home

If you plan to sell your house someday, consider getting new windows. Problems like windows that don’t open or are visibly damaged could raise concerns during a home inspection, possibly leading to lower offers or requests for repairs at your expense. Plus, potential buyers might not like the idea of replacing the windows themselves, seeing it as an extra expense on top of the purchase. Upgrading your windows makes your home look better and feel more comfortable and shows potential buyers that you care about your property and have modern amenities like noise reduction and energy efficiency. This could lead to a faster sale and even a bidding war, which means you could sell your home for more than you expected. With a typical return on investment of about 68%, replacing your windows before selling your home could be one of the best home improvements you can do.

When your windows no longer match your aesthetic

If your windows look out of place or don’t match your style, it might be time for a change. Picking out new windows during renovation can transform the look of your home and express your design goals. Replacing all windows at once ensures a cohesive look and avoids a patchwork of mismatched windows. Modern replacements offer historical charm without sacrificing efficiency and can be customised to reflect your style. Windows are a key consideration in your home’s aesthetic overhaul, affecting both interior and exterior design.


  1. How often should I replace my windows? Windows generally last between 15 to 20 years before requiring replacement. Factors such as the quality of materials, exposure to weather conditions, and maintenance can impact their lifespan. Notice drafts, high energy bills, or difficulty opening and closing them? It may be time to think about getting new windows.
  2. Can I repair my windows instead of replacing them? In some cases, yes. If the issue is with broken glass, a faulty component, or preserving historic windows, repairs might be the way to go. But replacing it is more cost-effective if you’ve got bigger problems like major damage, drafts, or it’s just not efficient.
  3. Will new windows save me money on energy bills? Definitely! Modern windows are made to be super energy efficient. They have double panes and improved sealing to keep your house all cosy. With better insulation, they can lower your utility bills by reducing the amount of energy you need to heat or cool your place.
  4. How do I choose the right windows for my home? Consider your home’s architectural style, energy efficiency goals, and budget. Local installers can offer personalised advice and provide quotes based on your specific needs. Opting for a local company often ensures better prices and more personalised service. Also, look for windows with high STC ratings if soundproofing is a priority, and consider double or triple glazing for better insulation.