• 1930’s – Steel Replacement Windows

    1930's Homes - Elegance & Versatility

    Benenden windows are the ideal replacement for metal casements commonly fitted on many 1930’s properties. The slim lines of our unique frames preserve the building’s original character, whilst delivering all the benefits you expect of modern aluminium double glazing. Customisation is possible with a range of handles and a comprehensive choice of colours for interior and exterior finishes. We can reproduce leaded and Georgian styles sympathetically. Where authentic leaded lights are required for conservation reasons, this can be achieved with the Benenden Series 1 single glazed option.

  • Suburban Semi – Aluminium Double Glazing

    Suburban Semi

    Properties with brick or stone column window apertures benefit greatly from Benenden slimline aluminium windows, which we can easily customise for shape and fit, and which retain the elegant appearance of the original metal framed windows.

  • Barns, Cottages and Farmhouse – Aluminium Double Glazing

    Olde Worlde Charm (Barns, Cottages & Farmhouse)

    The character and beauty of these traditional country homes was preserved with sympathetic restoration and careful introduction of Benenden windows. Whether combined with new or original oak frames or fitted directly to existing masonry, the Benenden range blends in seamlessly, providing greatly improved insulation and security.

  • Curved Aluminium Windows

    Curved and Shaped Windows

    We specialise in the manufacture and installation of aluminium curved and shaped windows. We can manufacture to a range of shapes and sizes giving you a bespoke solution to your properties requirements.

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  • Tudor Homes - Aluminium Double Glazing

    Faithful Reproduction (Tudor Homes)

    Wherever timber beams are prominently featured, the subtle incorporation of Benenden windows ensures that your home’s character is not lost. With the right choice of colours and window furniture, the ambience is maintained inside and out. Antique lead designs can also be replicated. In many cases only the metal sashes need replacing – leaving the original timber frames in situ removes the necessity for costly redecoration. Where new timber frames are required, we can reproduce the original profiles and match the material and colour finish. A truly bespoke service

  • Listed Buildings - Metal Replacement Windows

    Listed Buildings

    With over 30 years experience of manufacturing and installing aluminium windows, The Heritage Windows team has a great knowledge and understanding when it comes to replacing listed buildings windows.

  • Art Deco – Steel Replacement Windows

    Slimline Style Art Deco

    Art Deco properties cry out for Benenden windows. These properties were traditionally fitted with steel windows but it is now possible to combine the elegant lines of the period with the benefits of double glazing for even the most challenging specifications. Curved double glazed sealed units can be made to order and with The Heritage bar glazing option, it’s possible to recreate an accurate representation of this distinctive style.

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  • Mansion Blocks and Flats - Aluminium Double Glazing

    Mansion Blocks and Flats

    Our slimline aluminium windows allow you to improve your building’s energy efficiency whilst preserving its original character.


  • Direct Fix To Stone – Aluminium Double Glazing

    Direct fix into stone

    To see more examples of how our slimline aluminium windows work with different applications please click here

  • Direct Fix To Stone – Aluminium Double Glazing

    Direct fix into brick

    To see more examples of how our slimline aluminium windows work with different applications please click here.

  • Fit Into Existing Or New Timber – Aluminium Double Glazing

    Fit into existing or new timber

    To see more examples of how our slimline aluminium windows work with different applications please click here.

Preserve the unique character of your home with The Heritage Window Company’s range of Benenden™ and Conservation Slimline Aluminium Windows. Our windows are the slimmest aluminium windows available in the UK. Originally designed for the replacement of steel windows, they are often specified for new build projects or conversions where minimal sight lines and period styling are important considerations.

We manufacture and install all our windows in-house allowing us to work with a diverse range of period and new-build properties from 1930 period style homes, Tudor homes, to Art Deco suburban semi’s. In addition to steel window replacement we offer a range of complementary products including: handles, glass and glazing options, vertical sliding dash windows, aluminium doors, bi-folding doors and our Symmetry range of windows for minimal sightlines.

You’ll find our consultative sales approach refreshing and as many of our customers will tell you, we’re passionate about quality products and service.


“Just wanted to let you know that our windows have been installed and we think they look absolutely amazing! Thank you for all your help in making sure we got it just right!”

Mr & Mrs J, Twickenham