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As you can imagine a lot of our work is in grade 1 or 2 listed buildings and conservation areas, from our experience the rules and regulations vary from borough to borough and it is certainly worth checking what you are permitted to do in regards to your windows and doors with the local planning office.

Conservation areas

Often in conservation areas it can be the case that windows are allowed to be changed on a like for like basis using the same material (timber) but upgrading the glass to double glazed units, in some Grade 1 and 2 listed buildings the original windows and doors must be retained with only the minimal amount of original timber removed for necessary repair and double glazed units not permitted.

Where windows are not allowed to be changed we offer an overhaul draught proof service and have options for bespoke timber secondary glazing.

Once you have confirmed what is permitted we can help by supplying technical drawings for approval and by using our experience we can offer the best solution including slim line discreet double glazing, structural glazing bars and separate double glazed units and many options of thicker single panes of glass including acoustic noise reduction and single glazed security options.

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  • Really friendly, reliable and efficient service. We had our windows replaced in several blocks and the same guy came each time, he was so tidy and the windows have transformed our house!

    ACTON, W3

  • Andy and his team did exactly what they said they would, when they said they would. They were a joy to have around and the result is even better than I hoped. Rear windows next!

    CHISWICK, W4

  • Very happy with the service. We recommend A Sash Window Wizard to everyone needing help with their windows. Very good value for money.

    WANDSWORTH, SW18

  • Efficient service. It does make a difference-the house definitely holds heat better now. Professional and no fuss.

    EPSOM, KT19

  • Windows are fabulous-only wish I’d had them done ages ago!

    CHISWICK, W4

  • We are really happy with our windows. The work was carried out with little disruption or fuss.

    EPSOM, KT17

  • Friendly, courteous, professional but above all came at the agreed time and carried out work meticulously to plan.

    REIGATE, RH2

  • We are extremely pleased with the finished product.

    KINGSTON, KT1

  • Very professional job. So wonderful to find a company that delivers on its promises on time!

    SURBITON, KT6

  • Extremely pleased with all aspects of the work.

    BATTERSEA, SW11

  • All I can say is thank you very much Andy and staff. I have already recommended you to a friend.

    WIMBLEDON, SW19

  • Good value, well built product. Exemplary.

    WALTON ON THAMES, KT12

  • Reliable, friendly, professional. I have no hesitation in recommending ‘A Sash Window Wizard’ to other potential customers.

    CLAPHAM, SW4