{"id":6542,"date":"2025-12-16T10:16:00","date_gmt":"2025-12-16T10:16:00","guid":{"rendered":"https:\/\/www.gfdhomes.co.uk\/blog\/?p=6542"},"modified":"2025-12-05T12:17:04","modified_gmt":"2025-12-05T12:17:04","slug":"bi-fold-doors-a-simple-guide-for-homeowners","status":"publish","type":"post","link":"https:\/\/www.gfdhomes.co.uk\/blog\/bi-fold-doors-a-simple-guide-for-homeowners\/","title":{"rendered":"Bi-Fold Doors: A Simple Guide for Homeowners"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A simple guide to bi-fold doors. Learn sightlines, thermal breaks, security, and how to choose the right system with clarity. Expert advice from GFD Homes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What You&#8217;ll Learn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#1\" title=\"\">How Bi-Fold Doors Work and Why They\u2019re So Popular<\/a><\/li>\n\n\n\n<li><a href=\"#2\" title=\"\">How the Top Three Brands Compare<\/a><\/li>\n\n\n\n<li><a href=\"#3\" title=\"\">What to Consider Before You Buy<\/a><\/li>\n\n\n\n<li><a href=\"#4\" title=\"\">How to Ensure a Smooth, Stress-Free Purchase<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(Estimated Reading Time: 5-6 Minutes)<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-1024x768.jpg\" alt=\"A beautiful bi-fold doors from GFD Homes, opening your home to stunning views, natural light, and modern open-plan living\" class=\"wp-image-5748\" srcset=\"https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-1024x768.jpg 1024w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-300x225.jpg 300w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-768x576.jpg 768w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-500x375.jpg 500w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-1200x900.jpg 1200w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-780x585.jpg 780w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-600x450.jpg 600w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-550x413.jpg 550w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-370x278.jpg 370w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT-255x191.jpg 255w, https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/06\/08-5-Fold-Internal-Grey-V4-10K-CONCERTINA-FLAT.jpg 1333w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Beautiful bi-fold doors from GFD Homes, opening your home to stunning views, natural light, and modern open-plan living<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Introduction: Folding Glass, Folding Heads<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/bifold-doors\" target=\"_blank\" rel=\"noopener\" title=\"\">Bi-fold Doors<\/a> look effortless on TV \u2014 huge walls of glass sliding away to open your home into the garden. But once you start researching, it quickly turns into a world of sightlines, thermal breaks, U-values, and traffic doors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide breaks everything down in everyday English. Whether you\u2019re exploring Korniche, Smart, or Cortizo systems, you\u2019ll learn exactly what matters, what\u2019s marketing noise, and how to choose bi-fold doors with total confidence.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1\"><strong>What a Bi-Fold Door Actually Is<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/www.gfdhomes.co.uk\/c\/bifold-doors\" target=\"_blank\" rel=\"noopener\" title=\"\">Bi-fold Door<\/a> is a set of glazed panels (called \u201cleaves\u201d) that fold and slide along a track, opening up entire walls.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They\u2019re made from slim aluminium frames with large glass sections to let in maximum light.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When closed, they look like an elegant glazed wall. When open, they stack neatly to one side \u2014 giving you a completely open space between home and garden.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Available in 2 to 7 panels, bi-folds can open inwards or outwards, from the left, right, or middle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bi-Fold Doors <strong>Key Terms Explained<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Sightlines<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The sightline is the visible width of the vertical frame between glass panes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Slimmer sightlines = more glass, less frame, more light.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical range:<\/strong> 110\u2013132 mm depending on brand.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Why it matters:<\/strong> The thinner the sightline, the sleeker and more contemporary your view.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Consider:<\/strong> Ultra-slim systems like Cortizo if you prioritise minimal frame aesthetics.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Thermal Break<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A thermal break is an insulating barrier (often a polyamide strip) inside the aluminium profile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It stops heat escaping through the metal.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Without a thermal break, aluminium conducts heat \u2014 meaning higher bills and condensation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Modern systems like Smart Visofold and Korniche use multi-chambered thermal breaks to achieve U-values as low as 1.4 W\/m\u00b2K.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Traffic Door<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">One leaf in a bi-fold can act as a normal hinged door.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That\u2019s called a traffic door \u2014 handy for everyday use when you don\u2019t want to fold the whole set open.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Ideal for access to your garden or patio in winter, without losing heat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Consider:<\/strong> If you use your patio often, make sure your design includes a traffic door.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Threshold<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The threshold is the bottom track the doors slide on.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are two main types:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Low threshold:<\/strong> Flush with the floor for step-free access (great for wheelchairs and children).<\/li>\n\n\n\n<li><strong>Rebated threshold:<\/strong> Sits slightly higher, offering better weatherproofing.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tip:<\/strong> If your bifold doors are fully exposed to wind or rain, choose rebated. If sheltered or internal, low is fine.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5. Polyamide Strip<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">This is the technical name for the thermal barrier inside the aluminium frame.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It prevents heat transfer and is essential for energy efficiency.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">If a brochure mentions \u201cpolyamide thermal breaks,\u201d that\u2019s a good thing \u2014 it\u2019s doing the insulation work you can\u2019t see.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>6. Glazing Bead \/ Internally Glazed<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A glazing bead holds the glass in place.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When a door is internally glazed, the bead is on the inside \u2014 which means the glass can\u2019t be removed from outside.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s a security feature. Always look for <em>internally glazed<\/em> systems, like those sold by <a href=\"https:\/\/www.gfdhomes.co.uk\/\" target=\"_blank\" rel=\"noopener\" title=\"\">GFD Homes<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>7. U-Value<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Measures how well the door insulates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lower = better.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical range:<\/strong> 1.4\u20131.6 W\/m\u00b2K depending on glass type.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A low U-value keeps rooms warmer and cuts heating bills. For comparison, old patio doors often had U-values above 3.0.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>8. PAS 24 \/ Secured by Design<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">PAS 24 is a British Standard for security testing \u2014 a door must resist physical attacks to pass.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Secured by Design (SBD) is a police initiative that sets even stricter standards.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">If security\u2019s a concern, check for PAS 24 or SBD certification on your system.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>9. Panel Configuration<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">This refers to how the panels fold and where they open from (e.g. 3L, 3R, 3L1R).<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Why it matters:<\/strong><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">The configuration determines:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Where the panels stack.<\/li>\n\n\n\n<li>Whether you can include a traffic door.<\/li>\n\n\n\n<li>How space inside\/outside is affected.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Consider:<\/strong> For smaller openings, go even-numbered panels (2 or 4). For larger spans, odd-numbered gives you a traffic door.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2\"><strong>The Big Three: Korniche, Smart &amp; Cortizo<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Korniche Bi-Fold Doors<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/korniche-aluminium-bi-folding-doors\" target=\"_blank\" rel=\"noopener\" title=\"\">View Korniche Range<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>From \u00a31,250 inc VAT<\/li>\n\n\n\n<li>Fastest-fit UK system.<\/li>\n\n\n\n<li>Ultra-smooth glide track and slim 110 mm sightlines.<\/li>\n\n\n\n<li>17 colours plus dual-colour options.<\/li>\n\n\n\n<li>PAS 24 security.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><img decoding=\"async\" src=\"https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-05-at-120850-300x126.jpg\" alt=\"\" class=\"wp-image-6669\" style=\"width:393px;height:auto\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Smart Visofold 1000 \/ 6000<\/strong> Bi-Fold Doors<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/smart-aluminium-bi-folding-doors\" target=\"_blank\" rel=\"noopener\" title=\"\">Explore Smart Range<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>From \u00a31,502 inc VAT<\/li>\n\n\n\n<li>Reliable, robust, widely specified in UK homes.<\/li>\n\n\n\n<li>Over 200 RAL colour options.<\/li>\n\n\n\n<li>Thermal break with U-values down to 1.4 W\/m\u00b2K.<\/li>\n\n\n\n<li>Excellent all-round balance of performance and price.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><img decoding=\"async\" src=\"https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-05-at-120936-300x126.jpg\" alt=\"\" class=\"wp-image-6670\" style=\"width:374px;height:auto\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Cortizo Slimline Bi-Fold Doors<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/cortizo-slimline-bi-folding-doors\" target=\"_blank\" rel=\"noopener\" title=\"\">Shop Cortizo Bifolds<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>From \u00a31,500 inc VAT<\/li>\n\n\n\n<li>Premium European engineering.<\/li>\n\n\n\n<li>Ultra-thin sightlines, perfect for architectural homes.<\/li>\n\n\n\n<li>High strength-to-weight ratio and luxury feel.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><img decoding=\"async\" src=\"https:\/\/www.gfdhomes.co.uk\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-05-at-121020-300x126.jpg\" alt=\"\" class=\"wp-image-6671\" style=\"width:398px;height:auto\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common Confusions Explained<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Term<\/strong><\/th><th><strong>What People Think<\/strong><\/th><th><strong>What It Actually Means<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Threshold<\/strong><\/td><td>A design detail<\/td><td>The barrier keeping water\/draughts out<\/td><\/tr><tr><td><strong>Sightline<\/strong><\/td><td>A visual term<\/td><td>The width of visible frame between panes<\/td><\/tr><tr><td><strong>Traffic Door<\/strong><\/td><td>Optional extra<\/td><td>Essential if you want daily access<\/td><\/tr><tr><td><strong>Thermal Break<\/strong><\/td><td>Marketing fluff<\/td><td>Crucial layer that keeps heat inside<\/td><\/tr><tr><td><strong>PAS 24<\/strong><\/td><td>Random code<\/td><td>Proof of security testing<\/td><\/tr><tr><td><strong>Internally Glazed<\/strong><\/td><td>Decorative<\/td><td>Security feature preventing glass removal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3\"><strong>What to Think About Before Ordering<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Opening Direction:<\/strong> Do you want the panels stacking left, right, or split?<\/li>\n\n\n\n<li><strong>Traffic Door:<\/strong> Do you need everyday access?<\/li>\n\n\n\n<li><strong>Exposure:<\/strong> Choose thresholds and seals suitable for your weather conditions.<\/li>\n\n\n\n<li><strong>Colour &amp; Finish:<\/strong> Match to windows and other aluminium products.<\/li>\n\n\n\n<li><strong>Space Planning:<\/strong> Ensure furniture, lighting, and paths don\u2019t clash with stacking panels.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4\"><strong>Buying Smart: Get It Right the First Time<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At<a href=\"https:\/\/www.gfdhomes.co.uk\/\" target=\"_blank\" rel=\"noopener\" title=\"\"> GFD Homes<\/a>, every bi-fold door is made to measure and priced online to the millimetre.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That means no vague estimates \u2014 just clear, instant pricing before you commit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can even pair your bifolds with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/atlas-aluminium-roof-lanterns\" target=\"_blank\" rel=\"noopener\" title=\"\">Roof Lanterns<\/a> for open-plan light.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.gfdhomes.co.uk\/c\/aluminium-windows\" target=\"_blank\" rel=\"noopener\" title=\"\">Matching Aluminium Windows<\/a> for a seamless finish.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">All backed by genuine warranties and UK-wide delivery.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Warranty Tip: Buy in Your Name<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If <em>you<\/em> place the order, your warranty and consumer rights sit with you.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If your <em>builder<\/em> orders it, the warranty belongs to them \u2014 which can make aftercare complicated.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At GFD Homes, we recommend ordering directly under your name to stay protected and deal directly with our aftercare team.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Summary: Knowledge is Power<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You now understand:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What sightlines, thresholds, and thermal breaks actually do.<\/li>\n\n\n\n<li>Why a traffic door matters more than you thought.<\/li>\n\n\n\n<li>How U-values and PAS ratings protect your comfort and security.<\/li>\n\n\n\n<li>And how to buy smarter, safer, and with confidence.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">With GFD Homes, you get transparency, expertise, and products we\u2019d proudly install in our own homes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\uded2 Browse the full collection at&nbsp;<a href=\"https:\/\/www.gfdhomes.co.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">www.gfdhomes.co.uk<\/a><br>\ud83d\udcde Or call&nbsp;<strong>01642 309576<\/strong>&nbsp;for expert guidance and a no-pressure quote.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>In a rush? Why not contact us via&nbsp;<a href=\"https:\/\/wa.me\/message\/C2KJV4ZEB6VRH1\" target=\"_blank\" rel=\"noreferrer noopener\">Whatsapp<\/a><\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bi-Fold Doors: Browse Our Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.gfdhomes.co.uk\/blog\/cortizo-bi-fold-plus-an-introduction\/\" target=\"_blank\" rel=\"noopener\" title=\"\">Cortizo Bi-Fold Plus:&nbsp;An Introduction<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.gfdhomes.co.uk\/blog\/why-bi-folding-door-are-still-popular\/\" target=\"_blank\" rel=\"noopener\" title=\"\">Why bi-fold doors are still popular\u2026<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.gfdhomes.co.uk\/blog\/are-bifold-doors-secure-your-bifold-door-security-guide\/\" target=\"_blank\" rel=\"noopener\" title=\"\">Are Bifold Doors Secure? Your Bifold Door Security Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.thetradevillage.co.uk\/bifold-doors\" target=\"_blank\" rel=\"noreferrer noopener\">Trade access to bifold door costs<\/a>: looking for trade prices? Visit our trade site,\u00a0<a href=\"https:\/\/www.thetradevillage.co.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">The Trade Village<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ&#8217;s<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Are bi-fold doors better than sliding doors?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It depends on how you use the space. Bi-fold doors create a fully open wall, while sliding doors offer uninterrupted glass when closed. Bi-Fold Doors : Bi-Fold Doors Demystified: What All Those Specs Actually Mean explains how panel setup affects openness, sightlines, and layout.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Do bi-fold doors lose heat easily because they&#8217;re made of glass?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">No \u2014 modern bi-fold doors use thermal breaks, polyamide strips, and high-performance glazing to keep U-values low. As covered in Bi-Fold Doors : Bi-Fold Doors Demystified: What All Those Specs Actually Mean, top systems can reach U-values around 1.4\u20131.6 W\/m\u00b2K.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Do I need a traffic door?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">If you want everyday access without opening the full set, yes. A traffic door acts like a normal hinged door for quick trips outside. This is explained in Bi-Fold Doors : Bi-Fold Doors Demystified: What All Those Specs Actually Mean.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. What\u2019s the difference between low and rebated thresholds?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Low thresholds offer seamless access; rebated thresholds provide better weatherproofing. Bi-Fold Doors : Bi-Fold Doors Demystified: What All Those Specs Actually Mean outlines which is best based on exposure to rain or wind.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5. How secure are bi-fold doors?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">With features like PAS 24 testing, multi-point locks, and internal glazing, modern bi-fold doors are highly secure. Security standards are covered in Bi-Fold Doors : Bi-Fold Doors Demystified: What All Those Specs Actually Mean.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A simple guide to bi-fold doors. Learn sightlines, thermal breaks, security, and how to choose the right system with clarity. 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