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Even the best bifold doors can let in the odd draught over time. Like any feature of your home, a bit of wear and tear is bound to show up eventually (especially with moving parts and changing seasons in play).
The good news is, a draft doesn’t usually mean there’s anything wrong with the doors themselves. More often than not, it comes down to everyday factors: compressed seals, small alignment shifts or even a build-up of debris in the tracks. These are easy wins and, with a bit of attention, your bifold doors will be back to peak performance in no time.
Whether your bifolds are newly installed or have been serving your space for years, this guide will walk you through how to spot the issue, fix it fast and know when it’s worth calling in a professional.
Looking to get that comfort back? Let’s get started.
Noticed a draught coming in through bifold doors, even when they’re firmly shut? It might be time to take a closer look. Draughts can be subtle at first, but left unchecked, they can affect your comfort, energy bills and even the long-term performance of your doors.
Here are a few tell-tale signs that your bifolding doors might be letting in unwanted air:
💡 Top Tip: One quick way to check? Try the candle test. Light a candle and slowly move it along the edges of the door (carefully – and never leave it unattended). If the flame flickers or leans noticeably, that’s a strong indicator of a draught sneaking through.
Rest assured that at Bifold Shop, our doors are built to be secure and energy-efficient. With that said, like anything with moving parts, a few small issues can build up over time. A draft doesn’t always mean there’s something seriously wrong. Most of the time, it’s something small that’s easy to fix once you know what to look for.
Here are the most common culprits:
Knowing what’s causing the draught is the first step towards fixing it – and often, it’s a simple tweak rather than a full bifold door replacement.
Before you worry about replacements or expensive repairs, try these simple checks first. They might just do the trick!
Over time, dirt and grime can stop the seals from forming a proper barrier. Use a soft cloth and warm, soapy water to gently wipe along the rubber seals and edges – especially in the folds and corners where muck tends to gather. Make sure everything’s dry afterwards so no moisture gets trapped.
💡 For more advice, read our guide on how to clean bifold doors.
Even high quality seals wear out over time. Take a close look at the rubber seals. If you spot any cracks, splits or bits that look flattened, it might be time to replace them. Sealing bifold doors is an easy task with kits that are easy to find – just make sure you match them to your door brand and model.
Debris in the tracks can stop the doors from closing properly. Leaves, dust, pet hair – it all finds a way into the lower track, stopping your doors from sitting flush. Run a vacuum with a narrow nozzle along the bottom track and wipe it with a damp cloth. A quick clean can help your doors sit flush again, sealing up any little gaps. If you spot signs of rust or damage, address these too.
Hinges, rollers and locking mechanisms can get stiff or slightly misaligned over time. A bit of lubrication (avoid oil-based sprays) on the tracks, hinges and locking mechanisms can help everything glide smoothly and close more tightly. Open and close the door a few times to help the lubricant settle in.
Some bifold doors come with adjustable hinges or tracks. If your doors seem slightly out of line, a gentle tweak with an Allen key might help them close more snugly. Just be careful not to overdo it – a small adjustment goes a long way.
If you’ve tried the basics and there’s still a noticeable draught, it’s worth getting an expert to take a look. Particularly if your doors are newly installed, under warranty or showing signs of bigger issues (like warping or damaged frames), a trained bifold door installer can sort things quickly without risking further damage.
Once your bifold doors are running smoothly, the goal is to keep them that way. Fortunately, a little regular care goes a long way in preventing those chilly gaps from creeping back in.
Simple habits like wiping down the frames and seals every few months can stop dirt and dust from breaking down the weatherproofing. Keeping the tracks clear of debris ensures your doors close properly without any gaps.
It’s also a good idea to check the door alignment at least once a year, especially after heavy storms or extreme weather, to catch any shifts early. When seals start looking worn or tired, swapping them out quickly can save you from bigger issues later on.
💡 For more tips and advice, we recommend reading our bifold door maintenance guide.
Keeping your bifold doors in top shape doesn’t have to be complicated, time-consuming or overly expensive. With just a bit of regular maintenance, you’ll avoid most common draft issues and keep your home comfortable all year round.
If you ever feel stuck or want to make sure your bifold doors are working perfectly, remember we’re here to help. As experts in all things bifold doors, we know exactly what it takes to keep them sealing tight and looking great. Please don’t hesitate to get in touch.
