Buying Bifold Doors? 6 Things to Check Before You Choose
Buying bifold doors is one of the bigger investments you will make in your home, and they are used every single day. Two sets can look almost identical in a showroom yet perform very differently after a few winters.
This bifold door buying guide sets out the six things our team asks every client to check before signing an order.
Buying bifold doors: why the details matter
Bifolds are a large moving wall of glass. The frame, locks, seals, threshold and running gear all have to work together, year after year, in British weather.
The differences between a good door and a poor one are rarely visible on day one. They show up later as draughts, sticking panels, water at the threshold or a guarantee that turns out not to cover the part that failed.
What to look for in bifold doors: six checks
1. The quality of the material
Bifold doors are made in aluminium, timber or uPVC. Poor-quality frames of any kind can let in draughts and water, lose heat and weaken security.
Aluminium is our first choice: it is strong, will not rot or warp, and only needs a wipe with warm soapy water now and again. Not all aluminium is equal, though. Origin, the manufacturer we partner with, uses premium-grade aluminium from prime billets rather than re-melted material, which allows ultra-slim frames and more glass.
2. A secure locking system
In Origin's research, security received 37% of votes when homeowners ranked what matters most in new doors and windows. That makes sense: Origin notes that 31% of burglaries involved forcing a door lock and 27% involved lock-snapping. Check for:
PAS 23/24 security accreditation.
Cylinders that resist snapping, picking, drilling and bumping.
Multi-point locking. Origin doors use an 8-point system with secure hinges and 20mm chamfered bolts.
3. Thermal efficiency
Large glazed doors must meet Building Regulations for heat loss. Look for a polyamide thermal break inside the frame, quality weather seals and a strong U-value. Origin bifold doors achieve 1.4 W/m²K with double glazing and 1.1 W/m²K with a triple-glazed centre pane.
4. The right threshold
For doors exposed to the weather, choose a weathered threshold. Its 14mm lip gives the seals something to press against and works with drainage to carry water away. A flush threshold looks seamless but cannot guarantee weather performance, so it is best kept for internal or covered openings. Our guide to bifold door thresholds explains the options in full.
5. A guarantee that covers everything
Read the small print. Some guarantees may cover the paint finish but not the rollers, hinges and locks that actually wear. Origin's 20-year guarantee covers all door components as well as the powder coating.
6. Flexible, bespoke configurations
No two openings are the same. A 1.4m gap might suit a neat two-panel door, while a 5.4m opening could take five wide panels. Made-to-measure doors let you choose the number of panels, which way they fold and where the everyday traffic door sits. Finger-safe gaskets and magnetic catches that hold panels as you open them are worth asking about too.
Planning tips before you order
A few decisions are much easier to make early:
Fix your floor levels. Agree the finished internal floor and patio heights with your builder before the doors are measured.
Think about daily use. A traffic door lets you pop outside without folding the whole set.
Decide where the panels stack. Folded panels need space inside or out, so check furniture and planting.
Plan the view. Slim sightlines matter most when the doors are closed, which in the UK is much of the year. Our indoor-outdoor living ideas cover how to link the doors with flooring and garden design.
Ask who installs. A well-made door can still underperform if it is poorly fitted, so ask whether the installer is trained on that system.
Frequently asked questions
What should I look for when buying bifold doors?
Check the frame material, the locking system and security accreditation, the U-value, the threshold, the guarantee and whether the doors are made to measure. Getting these six right matters far more than small differences in price.
Are aluminium bifold doors better than uPVC?
For most homes, we believe aluminium is the stronger long-term choice. Its strength allows slimmer frames and larger panels, and it will not rot or warp.
How many panels do I need for bifold doors?
It depends on the width of your opening and how wide you want each panel. As a guide, a 1.4m opening might suit two panels and a 5.4m opening five wide panels, and we confirm the best layout at survey.
Talk to our team
If you are buying bifold doors, we will measure your opening, talk through every one of these checks and recommend a configuration that suits your home. You can browse our aluminium door range before you get in touch.
Book a free consultation and we will help you tick every box.
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