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Flush Sash Windows in Ipswich, Essex and Surrey

Modern flush sash windows unite classic timber sightlines with the high performance and low maintenance features of present-day uPVC. Combined with advanced EcoMAX glass or Comfort Glass, flush sash windows are designed to heighten your home’s thermal performance and kerb appeal tenfold. Choose from a range of refined painted and woodgrain finishes or a diverse range of window colours, including on-trend shades like Anthracite Grey, Agate Grey, and Olive Grey.

Amongst the many custom design options available, for the ultimate finishing touch choose from a range of charming handle styles complete with secure locking including standard, traditional or contemporary. Learn more about your window & door journey with us via our simple design and buying process.

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    White uPVC flush sash bay window

    Sitting flush

    The opening sash of the window fits flush with the outer frame for a seamless appearance

    Hidden Corner Weld

    An unseen corner joint helps create a seamless look. Choose from a fully welded, full mechanical or MechWeld joint

    Identical sightlines

    Enhance your home with same-width frames for equal sightlines

    What is a flush sash window?

    Intricately made to seamlessly replicate the look of authentic timber, flush sash windows fit sleekly into the window frame, instead of slightly overlapping the window frame for a smooth finish. Made from the highest quality uPVC, unrivalled energy performance, weatherproofing, and low maintenance finesse are a given. Well-known for the way they create traditional aesthetics without the traditional drawbacks, even the keenest eye won’t be able to tell the difference!

    Why choose a flush sash window?

    Cost-effective, authentic timber sightlines

    Much cheaper to construct than timber, our uPVC flush sashes can be customised in three realistic jointing options; fully welded, full mechanical, or mechanical/weld.

    Advanced thermal insulation

    Available with 3, 5 and 6 insulating chambers, our multi-chambered uPVC flush sash windows attain A energy ratings with ease.

    Superior security

    Complete with secure multi-point locking and able to last up to 35 years, our flush sashes are PAS 24 security accredited as standard.

    Low maintenance

    Our uPVC flush sash windows offer a maintenance-free design that won't rot, crack, warp, or fade throughout its lifespan (unlike real timber).

    Sustainably sourced

    As well as offering EcoMax Glass as standard, our flush sash windows are created from 80% recycled manufacturing off cuts.

  • Colours
  • Glazing
  • Advice + Guidance
  • Colours

    Our exquisite flush sash window colour palette comes in a whole range of beautiful colours including tranquil Cream, White Grain, and Natural Oak.

    White

    White

    Clotted Cream

    Clotted Cream

    Pearl Grey

    Pearl Grey

    Chartwell Green

    Chartwell Green

    Elephant Grey

    Elephant Grey

    Slate Grey

    Slate Grey

    Slate Grey Grained

    Slate Grey Grained

    Basalt Grey

    Basalt Grey

    Anthracite Grey

    Anthracite Grey

    Anthracite Grey Grained

    Anthracite Grey Grained

    Black Brown

    Black Brown

    Steel Blue

    Steel Blue

    Racing Green

    Racing Green

    Ruby Red

    Ruby Red

    Turner Oak

    Turner Oak

    Irish Oak

    Irish Oak

    Golden Oak

    Golden Oak

    Rosewood

    Rosewood

    Mahogany

    Mahogany

    Walnut

    Walnut

    Dark Oak

    Dark Oak

    Glazing

    Both ECOMax double glazing and Comfort Glass are available in the casement styles and we can also offer a range of textured and patterned glazing for added privacy or decoration. The benefits of upgrading your glazing are truly limitless - the most notable features include increased warmth, reduced energy bills & beating future energy price hikes. For complete peace of mind, we also offer toughened glazing options to enhance your home security further.

    The benefits of upgrading your glazing are truly limitless - the most notable features include increased warmth, reduced energy bills & beating future energy price hikes. For complete peace of mind, we also offer toughened glazing options to enhance your home security further.

    Advice + Guidance

    Versatile flush sash window designs for East London, Essex and Suffolk homes

    They say it’s often the little things that make the biggest difference. Each window is intricately made to meet your unique requirements, no matter how big or small your home improvement project is.

    We offer flush sash windows with fully welded, full mechanical, or mechanical/weld joints to create a style that will perfectly complement your home’s existing character. With a variety of authentic timber-replica finishes and classic extras like Georgian bars, decorative glass, or beautiful leaded detail to choose from, literally any look can be achieved.

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    Single white flush sash window
    Close up of flush sash window

    Can you put UPVC windows in a conservation area?

    Those living in listed buildings and conservation areas must take extra care that window and door replacements do not differ from the original design. So, first things first, be sure to check with your Local Authority whether your home is in a conservation area or not.

    Thanks to technological advancements, high quality timber alternative windows (like ours!) are designed to pass strict regulations in conservation areas. Robust, secure, and revitalising, you can count on our advanced flush sash windows to retain classic aesthetics whilst fully complying with the latest conservation rules in your area.

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    High performance flush sash windows

    Performing to some of the highest energy efficiency levels around, our flush windows are A rated as standard and can accommodate 28 mm ECOMax double glazing or 32 mm Comfort Glass with ease.

    Combined with modern multi-point shoot bolt security locks, stylish lockable handles and a convenient lockable night vent facility as standard, security issues associated with real timber - such as dry rot, pest infestation and warping - are a thing of the past with exquisite flush sash windows.

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    Black flush sash window

    Your Window and Door Journey with SEH BAC

    Replacing your windows and doors is easy.

    01

    Choose the right windows and doors

    Fill out a form online or visit one of our 11 showrooms to see our range of high-quality windows and doors up close and speak to our expert team for any advice on materials, styles, colours, energy efficiency and glazing. Once you are happy with your choice, we’ll provide you with a free no-obligation quote.

    02

    Place your order with us

    When you want to go ahead with your order, the details have been approved, and we have received your order deposit, our administration team will provide your contract to a surveyor.

    03

    Your surveyor assessment

    The surveyor will contact you to arrange a date that is convenient to come to your home and review the project scope, take accurate measurements and discuss any other matters that need to be considered. We will then confirm the surveyor’s assessment.

    04

    Confirm an installation date

    Our installation department will contact you to arrange a date for your window and/or door installation and your products will be ordered and manufactured, using cutting-edge techniques and industry-leading materials.

    05

    You're ready for your installation

    On the day, our skilled team will arrive at the agreed time to install your products, ensuring minimal disruption. They’ll explain the locking and opening systems and share maintenance tips to keep your products looking brand new. Once your installation is complete, we will contact you to confirm that everything has been finished.

    Frequently Asked Questions

    Find all the answers to our most frequently asked questions below.

    How much will new flush sash windows cost?

    There are many aspects to consider when purchasing new windows, such as material, thermal performance and whether it's been accredited by industry bodies to ensure its quality. To accommodate the majority of budgets, we offer a range of comprehensive finance options, including 2 years interest free credit & buy now pay later - £99 deposit. Find more information on double glazed window prices here.

    How do I know if my windows need replacing?

    Modern double glazing lasts at least 20 years, but there are certain tell-tale signs you need to look out for. Read more

    Which window material is best?

    The first decision you need to make is which window material is right for your home. Your final decision will be heavily influenced by your own personal choice, budget, property appearance and building era.   Read more

    What is A rated double glazing?

    Energy efficient home improvements are incredibly important, so if you're wondering how to tell what A rated glazing is you're not alone! Read more

    Begin Your Project

    Get your free quote – with no-obligation to buy. Simply fill in the form below to get started:







      By submitting your details you confirm that you agree to the storing and processing of your personal data by SEH BAC as described in the privacy statement.

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      Multi-award winning company

      Here at SEH BAC, we’re proud to have won many prestigious awards for our products as well as our work in the community:

      Installer awards 2022
      G21 Finalist
      SEHBAC showroom winner
      Ultraframe designer winner
      Conservatory and orangery awards winner 2019
      NHIC 2018 Consumer confidence award
      G17 Installer of the year
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      We’re one of the largest

      regional retail companies

      Vetted for professionalism, competency & compliancy

      Improving South East homes for more than 50 years

      With 9 show centres across the South East, you’re not far away from achieving your dream home:

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      Our Accreditations

      BSI ISO 9001:2015
      BS 7412
      FENSA Approved
      GGF
      TSI Approved Code
      Ultra Installer
      TGAS
      Trustmark
      QA National Warranties
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