Replacing old windows and doors has long been one of the best ways to add comfort, style, and value to your property. But in 2025, it’s no longer just about choosing double glazing — the latest glass technology, like laminated double glazing, is raising the bar for homeowners who want the best in warmth, security, and peace and quiet.
So, how much value do new windows and doors really add to your home in the UK — and why is laminated glazing becoming the smarter choice over triple glazing?
The impact on property value
Estate agent research in 2025 shows that new double-glazed windows and doors can add between 5% and 10% to your home’s market value. For an average property priced at £300,000, that’s a potential uplift of £15,000–£30,000.
Buyers are increasingly focused on energy efficiency, security, and design. A home that already boasts modern windows and doors with advanced glazing saves them the upheaval and the expense, making your property much more attractive.
How do new windows increase home value?
Rising energy prices mean homeowners are paying close attention to the thermal performance of the whole house, and windows and doors are a big part of that.
With laminated double glazing, SEHBAC customers benefit from U-values as low as 1.0 W/m²K, helping homes stay warmer for less.
But it’s not just about insulation. New windows also transform the look of a property, giving it a fresh, cared-for appearance that can sway buyers before they even walk through the door.
Just as importantly, buyers place a premium on security. Windows with laminated glass are much harder to break than standard units, adding an extra layer of protection. This combination of thermal efficiency and improved home security not only makes life more comfortable, it directly enhances your home’s resale value.
Laminated glass vs triple glazing
For years, the only upgrade from standard double glazing was triple glazing — heavy, expensive, and awkward to install. But laminated double glazing changes the game.
Security
Tougher than standard glass, laminated panes are much harder to break. Even if cracked, the interlayer holds the glass together, improving safety and making them ideal for ground floor windows and doors.
Thermal efficiency
With a U-value of 1.0, laminated glazing rivals or outperforms triple glazing for warmth while being lighter and more sustainable.
Noise reduction
Acoustic laminate technology achieves a 35dB reduction, blocking out more sound and creating a quieter home.
UV protection
The interlayer absorbs 99% of harmful UV rays, protecting furniture and flooring from fading.
Less strain on hinges
Unlike triple glazing, laminated units are lighter. Over time, the additional weight of triple glazing can put extra strain on window and door hinges, leading to wear and potential alignment issues. Laminated glazing avoids this problem while delivering equal or better performance.
At SEHBAC, we fit laminated double glazed units from Clayton Glass, featuring acoustic laminate panes, warm edge spacers, and Eco Max Low-E glass. Not only does this provide top performance, but EcoMax is made from 40% recycled material, with a tree planted for every order — making it one of the most sustainable glazing options available.
Do the research when you do the doors
Replacing front and rear doors is a quick win—it smartens up your home, improves its security, and adds value—but it’s worth looking carefully at product specification, especially at what’s included as standard.
A tired, faded front door is an instant turn-off for potential buyers. It sets an expectation about the rest of the house that can be difficult to recover from.
Replacing your doors—the average is five yearly—is today seen as an important part of property maintenance and is value enhancing. But the key is to choose wisely.
Good doors should come with advanced, multi-point locking systems as standard. The best of them increase protection and can be a factor affecting household insurance premiums.
Door construction matters too. The solidity of outer construction and filling materials, including glazing, as well as the frame and hinges all contribute to the security of the fitted door.
So far so predictable, but you can go further.
SEHBAC now offers technology integration into its composite doors as a standard feature. The Kubu system adds a layer of security by providing updates to your phone giving you more control and greater confidence in the integrity of your home when you’re away.
Do new windows and doors add value together?
Replacing windows and doors in one project delivers the most impact. A consistent design across your home increases its appeal, while improved insulation and laminated security glazing enhance both comfort and protection. Together, they can improve your EPC rating — a strong selling point for today’s buyers.
Why choose SEHBAC?
While new windows and doors can increase your home’s sale price, the benefits start immediately. So why not speak to us today?
With SEHBAC’s 50 years of experience, award-winning customer service, and expertise in windows, doors, conservatories, and orangeries, you can trust that every installation is tailored to your home.
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