If your home feels colder than it should, even with the heating on, draughts from uPVC windows and doors could be the reason. These small gaps allow cold air to enter and warm air to escape, making your living space uncomfortable and increasing your energy bills. Learning how to stop draughts from uPVC windows and doors is one of the simplest ways to improve warmth, comfort, and efficiency in your home.
Why Do uPVC Windows and Doors Let in Draughts?
Draughts are usually caused by wear and movement in your uPVC frames. Over time, weather changes and regular use can cause the seals and fittings to lose their tightness. The most common reasons include worn or flattened rubber gaskets that no longer form a secure barrier, misaligned hinges that prevent a proper close, and faulty handles or locks that leave small gaps when shut. Shrinking or cracked sealant around the frame can also allow cold air to enter from outside.
Even a tiny opening can make a noticeable difference to your home’s temperature, forcing your heating system to work harder to maintain warmth. Identifying the cause early can prevent more serious issues such as condensation, water ingress, and long-term damage to the surrounding structure.
How Can You Check for Draughts in uPVC Windows and Doors?
Before booking a glazing repair, there are a few quick ways to check for drafts at home. Run your hand slowly around the edges of your window or door frame; if you feel a stream of cold air, there’s likely a gap. You can also use a candle or incense stick to detect movement; if the flame flickers, air is entering the room. On windy days, listen carefully for a faint whistle or rustling noise near the hinges or handles.
These small checks will help you identify the problem area and determine whether a simple seal replacement or a professional repair is necessary.
How to Stop Draughts from uPVC Windows
If the problem is minor, you can take a few simple steps to resolve it yourself. Replacing perished rubber seals or weatherstripping is an effective way to restore a tight seal between the frame and sash. Fresh seals prevent cold air from leaking through and stop heat from escaping. Tightening loose hinges or adjusting the window alignment can also make a big difference, as it ensures the window closes flush with the frame.
Applying fresh uPVC-safe silicone sealant around the outer edges can block any small gaps that have developed over time. Lubricating handles and locks helps them pull the window tight when closed, creating a firm seal that prevents draughts. These simple maintenance tasks can instantly improve the comfort of your home and reduce unnecessary heat loss.
How to Stop Draughts from uPVC Doors
uPVC doors can also become draughty for similar reasons. If you notice cold air near the bottom, a new draught excluder or threshold seal can stop airflow under the door. Check that the hinges haven’t dropped, as misalignment can prevent the door from closing fully. You can adjust the hinges slightly or call a professional to rehang the door correctly.
The rubber gasket around the door frame can flatten or crack over time, especially on doors exposed to direct sunlight. Replacing this seal restores proper insulation and stops heat from escaping through the edges. Lubricating the locking mechanism will also help the door close more tightly and securely.
When Should You Call a Professional Glazier?
If you’ve tried basic fixes but still notice cold air, it’s time to call a glazing specialist. Persistent draughts often indicate deeper issues such as warped frames, faulty locking systems, or failing seals within the double-glazed unit itself. Professional repair is also essential if you notice condensation between panes, as this indicates that the glass unit’s internal seal has failed.
At Glaze Fixers, we use professional-grade tools and replacement parts to restore the performance of your uPVC windows and doors. Our glaziers inspect the entire frame, identify air leaks, and reseal every weak point to ensure long-lasting results.
What Happens During a Professional Draught Repair?
A professional draught repair involves more than just sealing visible gaps. At Glaze Fixers, every repair starts with a thorough inspection of your uPVC windows and doors to identify any hidden air leaks. We replace any damaged or perished seals, adjust the hinges and locks to ensure proper alignment, and apply new high-quality sealant where necessary.
Once complete, we test every section to confirm a perfect airtight seal. The result is improved insulation, reduced noise from outside, and a noticeable difference in warmth and comfort throughout your home. Most draught repairs are completed in a single visit, saving you both time and energy.
The Benefits of Fixing Draughty uPVC Frames
Repairing draughty windows and doors has clear advantages beyond comfort. You’ll enjoy a warmer home, lower heating bills, and improved energy efficiency throughout the year. A proper seal also reduces outside noise and prevents condensation from forming on cold surfaces. Regular maintenance extends the lifespan of your uPVC frames, avoiding costly replacements in the future.
Additionally, well-sealed windows and doors enhance your home’s security by ensuring that locks and latches engage properly. It’s a small investment that delivers significant benefits in warmth, safety, and savings.
Preventing Future Draughts
Keeping your uPVC windows and doors in good condition will prevent draughts from returning. Clean and lubricate hinges and locking mechanisms periodically to ensure smooth operation. Inspect your seals at least once a year and replace any that show signs of cracking or wear. Clear any debris from drainage holes to avoid water buildup, which can damage seals and frames over time.
By carrying out these simple checks, you can keep your glazing performing efficiently and ensure your home stays warm through every season.
Should You Replace Old uPVC Windows and Doors?
Most uPVC frames can last for decades with the proper care, but older installations can become less efficient. If your windows or doors are over 20 years old, or if repairs no longer resolve the issue, replacement may be a better option. Modern uPVC systems offer improved thermal performance, multi-point locking for extra security, and energy-rated glass designed to minimise heat loss.
If you’re unsure whether to repair or replace, the experts at Glaze Fixers can assess your frames and provide honest advice on the most cost-effective solution for your home.
Book Your Draught Repair with Glaze Fixers
If you’re struggling with draughty uPVC windows or doors, don’t wait for the problem to worsen. At Glaze Fixers, we specialise in professional uPVC window and door draught repairs across the UK. Our expert team replaces seals, realigns frames, and restores airtight performance, helping you enjoy a warmer, quieter, and more energy-efficient home.
Contact Glaze Fixers today to arrange your draught repair or request a free, no-obligation quote. Keep your home comfortable all year round with expert uPVC repairs you can trust.