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AluSpace pivot door office
Internal door leading to room with timber beams

A high-end solution for modern properties

At Direct Trade Windows, we supply and install internal doors that are long lasting, attractive, and extraordinarily strong. Their wide apertures make it easy to move furniture in and out, while they also act as an effective noise barrier and let in plenty of natural light.

Without a frame, they create open views, while their wide aperture offers ease of egress for multiple people in case of a fire.

Our internal doors are:

  • Long lasting – Durable for as long as 50 years.
  • Secure – Increased security thanks to Yale hardware.
  • Versatile – Available in single , double , and pivot door configurations.
  • Compliant – Meeting government standards to be wheelchair accessible.
  • Thermally broken – Excellent insulation to keep energy costs down.
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Trusted manufacturers since 2000

Professional Installer Network

Quick Supply

Made in the UK

Exceptional Quality Control

Knowledgeable Family Run Business

Bespoke Complex Products Fabricated

Alitherm Heritage doors

Our internal doors provide the ideal solution for heritage applications such as listed building renovations and large-scale replica refurbishment projects where planning constraints need to be considered. The profile uses Smart’s innovative polyamide thermal break technology which creates a barrier between the cold air outside and the warm air inside, significantly reducing thermal transmittance and enhancing the overall U-value.

  • Single or double door configurations available
  • Slim sightlines
  • Document L compliant
  • Multi-point locking and face mounted shoot bolts
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Modern kitchen viewed through black-framed aluminium internal partitions with a dining table set with wine glasses, candles, cheese, and cake in the foreground, suggesting a stylish and functional use of space in a Watford home.

AluSpace Internal Screening

The AluSpace Interior Screening System from Smart has been developed to create light and airy internal environments.

AluSpace can be used to divide or delineate both residential and commercial spaces of any shape and size, while at the same time providing an effective acoustic barrier.

With a choice of hinged single and double doors, as well as pivot and sliding options to accompany the fixed glazed screen, the flexible and versatile system provides almost limitless design possibilities.

AluSpace screens can be used to create and configure internal space across a wide range of applications, with options extending to include visible hinges or concealed pivot or sliding mechanisms, enabling the systems to be completely tailored to meet virtually any design style.

  • Single, double, pivot and sliding doors, as well as fixed screens
  • Extensive choice of colours
  • Wide range of accessories
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A good lock is not enough

Our Gold Standard
We use Ultion locks as standard, ensuring our customers can offer the highest security on the market.

Guaranteed
Ultion supplies a powerful lock, with an equally powerful anti-snap guarantee. Should your customer’s lock break by snapping, Ultion will refund them £2000.

State of the Art
Ultion locks have 11 pins, creating just under 300k lock combinations, making it virtually impervious to picking.

Accredited
Ultion locks are Kitemark approved, and Secured by Design, tested to rigorous police standards.

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  • Alitherm Heritage doors
  • Colours
  • Downloads
  • Glass Options
  • Alitherm Heritage doors

    Technical Specification

    • Brand Alitherm
    • Material Aluminium Polyamide
    • Dual Colour Yes
    • Thermally Broken Yes
    • NBS Available Yes
    • Document L Compliant Yes
    • Kitemark Yes
    • BS 6375-1:2009 Yes
    • BS 4873 Yes
    • Side Hung Max Width (mm) 600
    • Side Hung Max Height (mm) 1400
    • Top Hung Max Width (mm) 1400
    • Top Hung Max Height (mm) 1400
    • Fixed Max Width (mm) 2100
    • Fixed Max Height (mm) 2100
    • Single Door Max Width (mm) 900
    • Single Door Max Height (mm) 2100
    • Glazing (mm) 24, 28, 32 & 36 double or triple glazed units
    • Frame Depth (mm) 47
    • Typical Sightlines (mm) 59
    Modern kitchen viewed through black-framed aluminium internal partitions with a dining table set with wine glasses, candles, cheese, and cake in the foreground, suggesting a stylish and functional use of space in a Watford home.

    Colours

    Colours

    Pure White RAL-9010

    Pure White RAL-9010

    Matt White

    Matt White

    Matt Brown

    Matt Brown

    Jet Black RAL-9005

    Jet Black RAL-9005

    Grey

    Grey

    Gloss White

    Gloss White

    Gloss Off White

    Gloss Off White

    Dark Red

    Dark Red

    Dark Grey

    Dark Grey

    Dark Green

    Dark Green

    Dark Brown

    Dark Brown

    Dark Blue

    Dark Blue

    Cream

    Cream

    Black

    Black

    Anthracite Grey RAL-7016

    Anthracite Grey RAL-7016

    Airforce Grey

    Airforce Grey

    Downloads

    Glass Options

    Glass Options

    Unglazed

    Unglazed

    Standard Tough

    Standard Tough

    Standard Self Clean

    Standard Self Clean

    Solar Control

    Solar Control

    Self Cleaning

    Self Cleaning

    Self Clean Solar Control

    Self Clean Solar Control

    Satin Obscure

    Satin Obscure

    Laminated Security

    Laminated Security

    Gallery

    FAQ for Aluminium Internal Doors

    Welcome to our FAQ section for Aluminium Internal Doors. Here, we provide answers to common questions about our range of internal doors designed to bring a touch of luxury and strength to modern properties. Whether you're curious about their durability, configurations, or specific applications, you'll find concise and accurate information to guide you through your decision-making process. Explore the questions and answers below to learn more about the advantages and features of our Aluminium Internal Doors.

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    What is the primary advantage of Aluminium Internal Doors?

    The primary advantage of Aluminium Internal Doors is their durability, lasting up to 50 years, and increased security due to Yale hardware.

    What configurations are available for Direct Trade Windows' internal doors?

    Direct Trade Windows' internal doors are available in single, double, and pivot door configurations.

    What makes Alitherm Heritage doors suitable for heritage applications?

    Alitherm Heritage doors are suitable for heritage applications because they use innovative polyamide thermal break technology, reducing thermal transmittance and enhancing insulation. They also offer slim sightlines and comply with Document L standards.

    What is the purpose of the AluSpace Interior Screening System?

    The AluSpace Interior Screening System is designed to create light and airy internal environments, suitable for both residential and commercial spaces. It can also serve as an effective acoustic barrier.

    What door options are available with the AluSpace Interior Screening System?

    The AluSpace Interior Screening System offers single, double, pivot, and sliding doors, along with fixed screens. It provides a wide range of colour options and accessories to customize the design according to your preferences.

    Close up view of steel look windows

    Delighted Customers Share Their Experiences

    At Direct Trade Windows, our commitment to excellence is reflected in our exceptional customer satisfaction.
    We take great pride in our impressive 4.9 rating on Google, a testament to the unparalleled quality and service we offer.

    Check Out Our Google Reviews

    We had been severely let down by a previous supplier, but when we turned to Direct Trade Windows for help, we hit the jackpot. Helping us to transform a residential development in Hersham, they supplied us with high-quality, ultra-slim Cortizo sliding doors, complete with the bespoke sliding options that we needed. Our requirements were very specific and not readily available on the market, but Direct Trade Windows really went the extra mile to help us out, coming through with quality products and excellent service. We will definitely be using their services again.

    Park Lane Developments

    2022

    Nothing but praise for this outfit. It was a pleasure to work with them. It was a nerve-wracking undertaking for us, the biggest single expense to fit three large window/french door combos in our extension, yet the team made it a relatively relaxing experience with their professionalism and good humour. Thank you all so much for everything you and the whole team have done to get from the initial sale (well done Hash!) to the fun visit we made to the workshop, to the design and its multiple iterations (thank you Taz!) and finally to the installation. Thoroughly recommended.

    Eloise Price - 2022

    Direct Trade recently replaced a large, faulty sky light. They said they’d take 3 hours, they took two. They did a fantastic job, there was absolutely NO dust or mess, at all. I was amazed… thought I’d be clearing up dust for days! I also didn’t need to get the recess re-plastered or painted – bonus!

    I highly recommend Direct Trade. They are a professional and friendly service delivering a high quality product.

    Vicky Steele - 2022

    I met with Taz at the warehouse to see some examples of the glazing and from the beginning he was extremely professional, personable and helpful. We ordered crittal style windows and doors, a Juliet door, 3 other windows and roof lights and every one of them was excellent quality, secure and well made. I highly recommend Taz and his team at Direct Trade Windows!

    Nick Robinson - 2021

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    More products to consider

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