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Heritage windows

Features and benefits of Alitherm Heritage for Aylesbury & Buckinghamshire homes

  • Lightweight material, yet extremely strong and durable
  • Slim profiles and sightlines, allowing for more glazing which leads to an increased amount of natural light
  • 100% recyclable
  • Great way to modernise any home
  • Designed as a direct replacement for steel windows
  • Polyamide thermal break provides enhanced thermal performance
  • High security, with a multi-point locking system
  • Low maintenance
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Aluminium Heritage windows are a high performance option for your Aylesbury home

Heritage slimline aluminium windows provide the ideal solution for listed building renovations and large scale refurbishment projects where planning constraints are to be considered. No matter if you have a traditional home or a newbuild Smart’s Heritage windows are designed to offer a modern solution.

The Alitherm Heritage window range features slim sightlines and profiles that are usually associated with traditional steel windows. This wide range of high quality windows are available in a single or dual colour finish, with marine quality polyester powder coat as standard.

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Flush sash windows
heritage windows

Energy saving Heritage windows in Aylesbury, Buckinghamshire & beyond

Quality home improvements should never compromise on energy efficiency. Heritage slimline windows utilise Smart’s innovative polyamide thermal break technology which creates a barrier between the cold air outside and the warm air inside, helping you to save money on your energy bills.

The system’s timeless elegance is also accompanied by the outstanding thermal performance of a modern aluminium system.

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Elegant, Heritage slimline windows for properties in Aylesbury, Buckinghamshire & beyond

The Heritage range has been designed to combine efficiency, practicality and beauty without any need to compromise. These windows have a range of customisation options available including; a selection of colours, wide range of designs, glass upgrades and a choice of handles and hardware – enabling you to compliment the rest of your home.

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  • Colours
  • Glass Options
  • Accessories
  • Security
  • Downloads
  • Colours

    Whether your home improvement project requires bright white aluminium windows, modern black aluminium windows or something more vibrant, finding the best fit for your project is incredibly straightforward with a Double Glazing Direct installation.

    The Heritage range is available in a choice of single or dual colour options to give you the ultimate, stylish finish.

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    Glass Options

    Thanks to an ultra-insulating polyamide 'thermal break' element, Heritage windows are energy efficient and are capable of achieving A Window Energy Ratings with modern double glazing & Building Regulation compliant U-values with advanced triple glazing. If your room suffers from overheating in summer or is too cold to use in winter, we can install temperature-moderating Low-E glass. We also have an attractive range of decorative glazing, perfect for intricate heritage projects, adding privacy, and one-of-a-kind installations.














    From chrome inline locking window handles to exquisite Monkey Tail handles and teardrop dummy window stay bars that hark back to a simpler time - as well as heritage-inspired Georgian bar, Astragal bar, and mock sash horn detailing options - we're confident we have the perfect finishing touch for your new Heritage windows to truly make them your own.

    monkey tail handle


    These Heritage aluminium slimline windows offer inbuilt security with a multi-point locking system.

    As well as the option to add an extra layer of protection with advanced triple glazing and high quality window locks as standard, all Heritage products from Smart undergo extensive testing and checks. This means they can achieve the sought-after PAS 24: 2016 Enhanced Security Performance status, for peace of mind they can resist physical attacks by opportunist burglars.


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    What do our customers say?

    See more reviews

    Very quick and professional service

    I am very impressed, my home is much improved. Very professional. Prompt. Punctual. I highly recommend. THANK YOU ALL. I have just been in contact with Double Glazing Direct regarding...
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    Damien Martin


    We will be going back to Double Glazing Direct

    Double Glazing Direct changed our very old and leaky polycarbonate conservatory roof to a new solid roof as well as changing the windows and doors of the same area. From...
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    ‘Double Glazing Direct’ were brilliant.

    They were extremely polite and professional. Before they started the work on the day of installation, taking out the existing windows, they prepared the area with dust sheets and special...
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    Greater London


    Great job, professional service

    Replaced an old aluminium frame patio door with updated upvc doors. Work undertaken very professionally, leaving the area clean and tidy afterwards. Noticed a very slight imperfection upon completion but...
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    I would highly recommend

    Marc and his team did an excellent job of replacing our conservatory glass roof with a Guardian Warm Roof. Work started on time and was completed within the stated time...
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    David Tomlinson


    Outstanding Service

    We had many issues trying to locate a company to replace our conservatory roof however, this company was recommended to us by a friend of a friend and we couldn’t...
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    Visit our double glazing showroom in Aylesbury

    We understand that improving your property is a big step, and it can often be difficult to picture new windows, doors and more by just looking at an image on a screen.

    Our superb showroom in Aylesbury is the perfect place to get a real feel for the quality of our products and chat with a member of our team to learn more about transforming your home or business.

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