Why Your Windows Feel Cold Even When They’re Closed (And How to Fix It)

During the winter months, many homeowners notice that certain rooms feel colder than others, even when the windows are fully closed. If you find yourself sitting near a window and feeling a cold chill, your heating system may not be the problem. In most cases, heat is escaping through the windows due to wear, age, or minor faults that can often be repaired.

At MK Doors & Windows, we regularly help homeowners across Milton Keynes identify why their windows feel cold and provide practical solutions that improve comfort without unnecessary replacements.

Common Reasons Windows Feel Cold

Draughts around the window frame

Over time, window seals can compress or split, and hinges can loosen slightly. This creates small gaps that allow cold air to enter the home. Even a minor draught can make a room feel noticeably colder in winter.

Windows not closing tightly

If a window has dropped on its hinges or the locking points are misaligned, it may not pull fully into the frame. This reduces the pressure on the seals and allows heat to escape.

Failed double glazed units

Double glazing relies on a sealed gap between panes to retain heat. When that seal fails, insulation drops significantly. Sometimes this causes misting between the glass, but in other cases the window simply feels colder to the touch.

Older window designs

Older windows, particularly those installed many years ago, are far less energy efficient than modern systems. Even if they appear intact, they may be allowing heat loss through both the glass and frame.

Simple Checks You Can Do at Home

• Run your hand slowly around the edge of the frame to feel for cold air movement.

• Check that the handle pulls the window in firmly when locked.

• Look for flattened or cracked rubber seals.

• Check for condensation or cloudiness between the glass panes.

How Cold Window Problems Are Fixed

The solution depends on the cause. In many cases, the frame itself is still in good condition and does not need replacing. Common fixes include:

• Replacing worn or damaged weather seals.

• Adjusting hinges and locking points so the window closes tightly.

• Servicing or replacing handles and mechanisms.

• Replacing only the sealed glass unit where insulation has failed.

These issues are usually resolved through our Window and Door Repairs service, which focuses on restoring performance rather than pushing full replacements.

When Sealed Unit Replacement Makes Sense

If the window feels cold because the double glazing has failed, replacing the sealed unit is often the most cost effective option. This restores insulation and clarity while keeping the existing frame in place.

You can learn more about this service on our Sealed Unit Replacements page.

Is Secondary Glazing an Option?

For older properties or homes where replacement is not suitable, secondary glazing can significantly improve warmth and reduce cold spots. It adds an internal pane without altering the external appearance of the window.

More information is available on our Secondary Glazing page.

Get Your Windows Checked This Winter

If your windows feel cold, there is a good chance the issue can be fixed quickly and affordably. Our local team provides honest advice and practical solutions across Milton Keynes and surrounding areas.

To arrange a free quote or inspection, visit our Contact Us page or take a look at recent work in our Gallery.