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Experts in Aluminium Window & Door Fabrication

Customer First Service

Fast Lead Times

24hr Quotations

FREE Nationwide Delivery

We specialise in the supply and manufacture of bespoke aluminium windows and doors. Our purpose is to supply high quality products, delivered on time every time, and at competitive prices. We pride ourselves on being reliable, efficient and easy to deal with. We offer an extensive range of premium aluminium products, including slimline bifolds, patio doors, internal screens, commercial glazing and much more.

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Smart Alitherm 400 Windows

Smart Alitherm 400

Featuring Smart’s innovative co-extruded glazing gasket for quicker installation, the Alitherm 400 offers versatile configurations and compliance with PAS 24:2022 and Building Regulations Document L, ensuring superior security and thermal insulation.

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Why Choose BDC?

Diverse
Product Range

By choosing BDC, you’ll have access to a wide range of products, meaning there’s no need to dual or triple source your inventory.

Over 15 Years
Industry Experience

We have built a reputation for excellence with our suppliers and our customers, enabling you to benefit from our technical expertise.

British
Supplied & Made

Our suppliers are all based in the UK, manufacturing the highest quality products on the market.

Dedicated
Manufacturing Facility

We manufacture all of our products to the highest standards at our 27,000 sq feet dedicated facility in Witham, Essex.

Delivering
Far & Wide

We deliver throughout the south of England, to any location from Birmingham to Truro, meaning you can rely on us as your single-source supplier.

Our Most Popular Products

Smart Visofold 1000 Slim

Smart Visofold 1000 Slim

The Smart Visofold 1000 Slim is a sleek aluminium bifold door system designed to maximise natural light with its ultra-slim profiles and narrow sightlines. Offering excellent energy efficiency and easy installation with Smart’s innovative Quick-Glaze bead system, this versatile door is suitable for both residential and light commercial applications.

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Smart Visoglide Plus

Smart Visoglide Plus

The Smart Visoglide Plus Patio Doors combine modern styling with robust performance, making them perfect for residential and commercial applications. These aluminium sliding doors feature slim sightlines and can accommodate large glass panels to create expansive openings in any space.

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Smart Alitherm 600

Smart Alitherm 600

Our most popular window, Smart’s Alitherm 600 offers a high-quality glazing solution for a range of applications. With superior thermal efficiency thanks to Smart’s innovative polyamide thermal break technology, these windows provide excellent performance while maintaining a sleek, modern design.

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Commercial Projects

Large Scale Commercial Contracts

Large Scale Commercial Contracts

Whether it’s large commercial buildings, replica-refurbishments or new building contracts, we cater to any requirements. We provide tailored solutions for projects such as office buildings, retail developments, and educational establishments. Get in touch today – we’d love to hear about your project and its requirements, as well as answer any questions you may have.

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Newsletter

Explaining Thermal Efficiency in Aluminium Windows & Doors to Customers
Posted today News

Explaining Thermal Efficiency in Aluminium Windows & Doors to Customers

Thermal efficiency is a key selling point for modern windows and doors. Awareness of its importance is higher than ever, as customers become increasingly conscious of the role insulation plays in their energy bills and the sustainability of modern building materials. Because technical jargon such as U-values, glazing units, and thermal breaks can be confusing for some, installers and specifiers often act as the link between technical specifications and customer understanding. The aim is to translate technical performance into practical benefits, like reduced heating costs or increased comfort indoors. BDC Aluminium’s windows and doors are designed to combine strong aesthetics with high energy performance that modern buildings can rely on. What Thermal Efficiency Means ‘Thermal efficiency’ refers to how well windows or doors reduce heat transfer between inside and outside. As they are common areas where heat can escape a building, strong thermal efficiency is important. BDC’s modern window and door systems are designed to reduce heat loss through improved materials and advanced glazing. Customers love to hear about how a system can lower heating bills and create more comfortable internal temperatures – focus on tangible results. U-Values & Thermal Breaks Explained A ‘U-value’ is simply a measure of how easily heat passes through a window or door. It is measured in W/m²K (watts per square metre per degree Kelvin). The lower the U-value, the better the insulation performance, and this is what customers should be looking for when making their choice. Customers should avoid single glazing as it has very poor insulation performance. Instead, double or triple-glazing offers greater thermal performance for projects that require high-efficiency fenestration. Because aluminium naturally conducts heat, this historically affected its insulation performance. To combat this, our systems include thermal breaks to prevent this from happening. These breaks reduce heat transfer through the frame and significantly improve their thermal performance. Thermal Efficiency Components Explained The table below should help simplify technical elements that you might need to explain to customers. Component What It Does Impact on Efficiency Why It Matters to Customers Double/Triple Glazing Uses multiple glass panes Reduces heat transfer through the frame Keeps buildings warmer and reduces heating costs Thermal Breaks Insulating barrier between frames Reduces conduction through the frame Prevents cold frames Sealed Units Airtight glazing Minimises heat loss Improves comfort and reduces energy waste Frame Design Modern frames incorporate insulated profiles Enhances overall performance Ensures full system efficiency How Installers Can Communicate Value Customers care less about technical metrics and more about real-life outcomes. Describing benefits like how buildings stay warmer, heating bills are lower, and condensation is reduced is much easier to understand for the layperson. Simple explanations like “Lower U-values mean less heat escaping” and “Thermal breaks stop the aluminium frame conducting heat” should help customers understand. Emphasising the decreased energy consumption and increased internal comfort will also help. Explore the BDC Aluminium range to discover window and door systems designed to deliver modern thermal efficiency and performance.

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