When it comes to looking after your home, window issues often get overlooked. A draught here, a stiff handle there – at first, these issues can feel minor. But left unresolved, they can quickly grow into bigger concerns that affect your comfort, your energy bills, and even your home’s security. At that point, homeowners are usually faced with the same question: is it worth repairing, or is full replacement the smarter option?

It’s not always an easy choice. Repairs can be a quick and affordable fix, but sometimes they only buy you a little more time before the same problems return. Replacement, on the other hand, can feel like a big expense, but it may also deliver longer-lasting value, especially if your windows are old, inefficient, or badly damaged.

Drawing on our 37 years of experience, we know that the right path forward depends on factors like the age of your windows, the type and extent of the damage, and your budget.

This guide aims to help you understand when repairs make sense financially, and when complete replacement might be the more cost-effective long-term solution.

Blue aluminium bay windows

Warning Signs Your Windows Need Attention

Before diving into costs, it’s important to recognise when your windows need professional help. Look out for these common issues:

Draughts or cold spots near windows
Difficulty opening, closing or locking windows
Condensation between panes of glass
Rising energy bills without explanation
Visible damage to frames or glass
Water ingress

Even minor issues can lead to further damage if left unaddressed. Minor problems with window panes or hardware can escalate into more serious concerns that affect your home’s energy efficiency and security.

Repair or Replace?

Age and Condition

The age of your windows plays a significant role in this decision. Typically, quality windows should last 20+ years, depending on the frame material. If your windows are nearing or beyond this age range, replacement might offer better value than continued repairs.

For windows that still have many years of service left, repairs are often the more economical choice. At Futureglaze, we’ve restored countless windows for South Wales homeowners, extending their lifespan by years.

Type and Extent of Damage

Different types of damage call for different solutions:

Glass Issues: Broken glass can often be repaired without replacing the entire window. The type of glass and the number of panes will affect the repair cost.

Hardware Problems: Faulty locks, handles, or hinges are typically straightforward and affordable to fix.

Frame Damage: Minor frame issues can sometimes be repaired, particularly with uPVC windows. However, extensive damage, warping, or rot in wooden frames usually points toward replacement.

Sealing Problems: Draught issues can often be resolved with new seals rather than full replacement, especially when the window frames remain in good condition.

We believe in honest assessments rather than pushing for the most expensive option. Our team of window specialists can thoroughly inspect your windows and provide transparent advice based on your home’s specific needs.

Our repair specialists take pride in being able to fix windows that others can’t, potentially saving you considerable money.

Cost Comparison

While every situation is unique, these general cost ranges can help you understand the financial implications of your decision.

Window Repair Costs

Window repair costs vary significantly based on the type of repair needed:

Glass replacement: Replacing a single glass pane in an existing frame typically costs less than half the price of a new window. For double or triple glazing, the glass replacement cost will depend on glass type, size, and energy rating.
Hardware repairs: Fixing or replacing handles, hinges, or locking mechanisms is usually one of the most affordable repairs, often costing just a small fraction of a new window.
Seal replacement: Resolving draught issues with new seals or weatherstripping falls in the low to moderate price range and can significantly improve your home’s energy efficiency.
Frame repairs: Minor frame repairs for windows are moderately priced, though extensive frame damage might approach replacement costs.

Window Replacement Costs

Full window replacement costs depend on several factors:

Window size: Larger windows or bay windows naturally cost more than standard sizes.
Window type: Different types of windows come with different price points. Casement windows tend to be more affordable than sliding sash windows, for instance.
Frame material: uPVC windows are generally more budget-friendly than aluminium options.
Glazing options: The number of panes and glass type significantly impact the final cost.

If you’re dealing with issues like broken panes or damaged frames, you may not need to replace the entire window. Repairing or replacing the sealed unit starts from £90, depending on the size and glazing type.

However, if your frames are damaged, draughty, or outdated in terms of energy efficiency, a full replacement might be worth considering. While the upfront cost is higher, typically £500–£800 per window (depending on size), modern glazing can reduce heat loss, lower energy bills, and boost your home’s value.

white full frontage sash windows

The Futureglaze Repair Service

At Futureglaze, we offer comprehensive window repair services across South Wales. For over 37 years, we’ve built our reputation on honest advice and quality workmanship. Our repair specialists are often able to extend the life of your windows at a fraction of replacement costs.

When repair isn’t practical, we offer a range of high-quality replacement windows. Our uPVC and aluminium windows achieve excellent energy ratings, with U-values as low as 0.8 W/m²K available in some ranges.

Vertical sliding uPVC sash windows in green

Let’s Talk Windows Today

Whether repair or replacement makes more sense depends on your specific circumstances, budget, and the condition of your existing windows. With the correct information, you can make a choice that balances immediate costs against long-term value.

If you’re uncertain about the best approach, we offer expert assessments and honest advice. Our team can help you understand the costs involved and the most practical solution for your home.

For more information, or to arrange a free, no-obligation quote, you can:

Call us on 01443 423 423
Email us at sales@futureglaze.co.uk
Use our online contact form

Frequently Asked Questions

How much can I save by repairing windows instead of replacing them?

Repairs typically cost between 20-50% of full replacement, depending on the type of damage. For example, replacing just the glass in a window with a broken pane might cost less than half what a new window would.

At what point does window replacement become more cost-effective than continued repairs?

When repair costs exceed about 50% of replacement costs, or when you’re facing multiple repairs on older windows, replacement often becomes the better financial decision. Also consider energy efficiency. If your old windows are causing significant heat loss even after repairs, the ongoing energy costs might justify investing in new, more efficient windows.

Do different types of windows have different repair costs?

Yes, the window frame material and design significantly affect repair costs. Simple casement windows are typically less expensive to repair than sliding sash windows or bay windows, which have more complex mechanisms. Similarly, uPVC frame repairs are generally more straightforward and affordable than repairing timber frames that might have rot or warping issues.