How to Fix Draughty Windows

If you’re feeling a chill near your windows, even with the heating on, you’re not alone. Draughty windows are a common problem in homes across Essex and Suffolk, and while they may seem like a minor annoyance, they can significantly affect your comfort and energy bills.

At Colne Valley Windows, we’re all about helping you get the most out of your home’s glazing. While installing new double- or triple-glazed windows can make a significant difference, they’re not always the only solution. Why not consider these steps first?

So, if you’ve been wondering “Why are my windows so draughty, and how do I fix them?”, then this guide is for you.

What Causes Draughty Windows?

The usual culprit? Air leaks.

Over time, the seals around your windows can deteriorate. Tiny gaps open between the frame and the wall, letting cold air sneak in and warm air escape. You might not see the leak, but you’ll certainly feel it.

Sometimes it’s not even the window itself; it’s the surrounding insulation that’s underperforming. This is especially true in older homes or where building work has been done without adequate air sealing.

Do I Need to Replace My Windows?

Not necessarily. While upgrading to modern, energy-efficient glazing is always a smart investment, many draughts can be resolved without a full replacement.

That’s good news if you’re not quite ready to commit to new windows—or if your existing ones are still in good condition.

How to Fix Draughty Windows for Good

Let’s break it down into short-term fixes and long-term solutions.

Temporary Fixes (Quick and Cost-Effective)

• Weatherstripping – Replace or install new foam or rubber seals around the window frame to block gaps.
• Thermal curtains or blinds – Add an extra layer of insulation and keep the cold at bay.
• Draught stoppers – A classic rolled-up towel or a fitted fabric “snake” can help where frames meet sills.
• Window film kits – Shrink-wrap plastic film can create a temporary insulation layer on older single-glazed windows.

These are great if you’re renting or just need a quick improvement—but they won’t fix the root cause.

Long-Term Fixes (For Real Results)

• Air sealing – Professionally applied caulk or expanding foam can seal gaps around the window frame, inside and out.
• Window insulation – Adding interior storm panels or inserts can increase thermal performance without replacing the entire unit.
• Whole-house insulation and ventilation check – If you’re experiencing widespread draughts, your loft, walls, and floor insulation may be contributing to heat loss too.

For more details on the science behind draughts and why they matter, check out this helpful guide from Energy Savings Trust.

When to Call in the Pros

If you’re tired of temporary solutions or suspect there’s more going on than just a bit of draughtiness, we’re here to help. Our team at Colne Valley Windows can assess your home, identify the source of your draughts, and recommend the right fix, whether that’s sealing, insulation, or full window replacement.

Say Goodbye to Draughty Windows

A draughty home is uncomfortable and, more importantly, costly. With the right approach, you can prevent heat from escaping and enjoy a warmer, more efficient space year-round.

Get in touch with Colne Valley Windows today to find out how we can help draught-proof your home.