Draughty Windows in Winter? What Causes It and How to Repair the Problem

If your home feels colder than it should, even with the heating on, you might not need to look far for the cause. Draughty windows are one of the most common reasons for heat loss in British homes, especially during the colder months. Fortunately, most cases can be fixed easily and don’t require replacing the entire window.

At MK Doors & Windows, we help homeowners across Milton Keynes, Newport Pagnell, and surrounding areas identify and repair draughty windows, improving comfort and cutting energy costs along the way.

How to Know If You Have a Draughty Window
Some signs are obvious, but others are easy to overlook until the temperature drops. Common symptoms include:

• A cold breeze coming from the edges of the frame

• Curtains or blinds moving when the wind blows

• Condensation around the seals

• Higher heating bills than usual

• Cold patches near certain windows

If any of these sound familiar, your window’s seals, hinges, or locks may have started to fail.

What Causes Window Draughts
Over time, the rubber seals that keep warm air in and cold air out can shrink, flatten, or split. Hinges and locking points also wear down gradually, allowing small gaps to open up around the frame.

Other common causes include:

• Poorly aligned sashes (especially on uPVC windows)

• Loose locking mechanisms

• Cracked or warped frames

• Seals drying out due to sun exposure or age

Even small gaps can have a big impact on comfort and heating efficiency, so it’s always worth checking your windows before winter sets in.

How We Repair Draughty Windows
At MK Doors & Windows, our repair process focuses on restoring insulation without the cost of full replacement. Here’s what we typically do:

• Inspect seals, hinges, and locking points for wear

• Replace old or damaged rubber seals

• Adjust hinges and locks for a tighter closure

• Re-seat glass units if gaps have developed

• Check for condensation or misting between panes

Most repairs take less than an hour per window, with minimal disruption to your home. Once complete, you’ll immediately notice warmer rooms and reduced noise from outside.

Should You Repair or Replace Your Windows?
If your frames are still in good condition, repairs are almost always the smarter choice. Replacing seals and re-aligning the sashes costs a fraction of a new installation, and it can restore your windows’ performance for years.

However, if your windows are over 20 years old, show visible frame damage, or suffer from repeated misting between panes, it might be time to consider new units. Either way, our team will give you honest advice and a clear quote before any work begins.

Preventing Future Draughts
A few small habits can help extend your windows’ lifespan:

• Keep tracks and hinges clean from dust and debris

• Lubricate moving parts yearly

• Avoid slamming windows shut

• Wipe down seals to prevent cracking

• Schedule a quick check-up before each winter

Regular maintenance helps your windows perform like new and avoids small problems turning into costly replacements.

Your Local Window Repair Specialists
With over 25 years of experience, MK Doors & Windows provides reliable window repairs, servicing, and replacements across Milton Keynes and surrounding areas. Our friendly, local team focuses on honest advice, professional workmanship, and lasting results.

If you’re struggling with cold spots or rising energy bills, it’s time to get your windows checked.