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Heritage windows

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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heritage windows

Energy saving Heritage windows in Buckinghamshire, Hertfordshire & Oxfordshire

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 & 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.

    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

    Friendly and Professional

    We moved into a 4 bed town house a couple of months ago and had all the windows and doors replaced. The co owner Mark, came out and offered great advice on the options available. They installed everything on time in a Friendly and professional way and were approachable/helpful if there were any issues that arose. They were always clean and tidy. We would wholeheartedly recommend Double Glazing Direct Limited to anyone.

    Buckinghamshire, 11/06/2022

    Which? Trusted Trader

    Excellent work with quality products

    I have use Marc several times, some professionally and also personally. Marc has always communicated with me well regarding delivery of product and installation. He is alway courteous and very professional, the product quality he uses are extremely good and he is an excellent fitting leaving you with a very high quality finish. Excellent would definitely use him again if required.

    Buckinghamshire, 23/10/2021

    Which? Trusted Trader

    Great Work, Professionally Done

    The whole team who carried out the work were excellent. Diligent, courteous and professional, they performed a standout job, from initial quote through to completed work. Couldn’t recommend them enough, and we are extremely happy with everything.

    Buckinghamshire , 25/11/2021

    Which? Trusted Trader

    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 be happier. It was really refreshing to have a company not place any pressure for a sale; always available to answer any queries; worked incredibly quick and professionally throughout with a friendly manner. We are so impressed with the service received, that we have now booked them again in May to have our windows replaced.

    Buckinghamshire, 02/05/2023

    Which? Trusted Trader

    ‘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 protective flooring on our wood floor and stairs. The fitters were skilled knowledgeable and focussed. There was no mess made during the installation. The quality of the product and installation was excellent. I love my windows and I will always recommend ‘Double Glazing Direct’.

    Greater London, 15/09/2023

    Which? Trusted Trader

    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 this was rectified quickly and efficiently. Thank you to the entire Team. I would recommend Double Glazing Direct to anyone. Brilliant service from start to finish.

    Buckinghamshire, 15/09/2023

    Which? Trusted Trader

    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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