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Double Glazed uPVC and Aluminium Windows Harwich

We offer replacement windows in five functional styles and two high-performance materials: uPVC and aluminium. This is in addition to our bespoke window shapes, for those wanting to fit a window in an unusual shape. You can choose from over 150+ RAL colours and a range of customisations in the design and buying journey, for the perfect solution for your home.

Our glazing options include advanced double and Comfort Glass, our alternative to triple glazing, as well as decorative glazing, all of which are designed to provide comfortable interior temperatures, great home security and strong noise cancellation.

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uPVC

Contemporary, timeless, traditional & statement colour collections. Dual colour options are also available.

uPVC Windows

Aluminium

Premium matt, textured and metallic tones and shades. Dual colour options are also available.

Aluminium Windows

Timber Effect

Variety of luxury finishes and authentic woodgrain foils. Dual colour options are also available.

Timber Effect

uPVC

EcoMax double glazing, Comfort Glass and decorative glazing.

uPVC Windows

Aluminium

EcoMax double glazing, Comfort Glass and decorative glazing.

Aluminium Windows

Timber Effect

Eco Max double glazing, Comfort Glass and decorative glazing.

Timber Effect

uPVC

Advanced multi-chambered frames, A energy ratings as standard, and U-values of 1.2 W/m2K.

uPVC Windows

Aluminium

Enhanced thermally broken profile attains A+ energy ratings and U-values of 1.3 W/m2K

Aluminium Windows

Timber Effect

Advanced multi-chambered frames, A energy ratings as standard, and U-values of 1.2 W/m2K.

Timber Effect

uPVC

An advanced shootbolt locking system that exceeds building regulation standards. Additional security extras can be included.

uPVC Windows

Aluminium

One of the strongest construction materials available and fitted with advanced multipoint locks, it surpasses security regulations. Additional security extras can be included.

Aluminium Windows

Timber Effect

Modern multipoint locking systems, so they pass strict industry standards and they’re proven to secure your home from common burglary techniques.

Timber Effect

uPVC

At least 35 years with no maintenance required. The anti-fade coating keeps the material looking pristine.

uPVC Windows

Aluminium

At least 45 years, with no maintenance needed. It’s corrosion and rust resistant.

Aluminium Windows

Timber Effect

At least 35 years with no maintenance required. Unlike real timber, they will never need to be repainted.

Timber Effect

uPVC

A cost-effective option, uPVC is versatile, high-performance and modern.

uPVC Windows

Aluminium

Unique slimline frames will modernise any style of home and provide premium benefits.

Aluminium Windows

Timber Effect

With traditional features such as flush frames and seamless weld finishes, they can be approved for use in conservation areas.

Timber Effect
  • Browse Styles
  • Browse Materials
  • Browse Colours
  • Glazing
  • Frame Options
  • Advice + Guidance
  • Browse Styles

    Browse Materials

    High quality uPVC and aluminium window frames

    We offer a choice of two versatile window frame materials, catering for every budget, personal taste and requirements, with both uPVC and aluminium capable of providing you with stylish looks, exceptional energy efficiency and a lifetime of outstanding performance. uPVC provides a practical and durable window solution that requires virtually no maintenance. Aluminium provides a sleek and stylish look thanks to minimalist frames and sightlines.

    Window FAQs

    Browse Colours

    A wide range of window colours

    With hundreds of standard, premium, smooth and textured finishes to choose from, our windows can be designed in over 150 RAL colours and a variety of authentic woodgrain effects, so we’ll be able to design the perfect solution to complement your home’s existing character. From timeless wood effect windows, to elegant Chartwell green, or modern grey and black. We also offer dual-colour designs, so the inside and outside window frame colours can be different to suit both your home’s exterior and interior.

    uPVC window colours

    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

    Aluminium window colours

    White

    White

    Ivory White

    Ivory White

    Light Cream

    Light Cream

    Mid Cream

    Mid Cream

    Green Grey

    Green Grey

    Grey

    Grey

    Smoke Grey

    Smoke Grey

    Warm Grey

    Warm Grey

    Shadow

    Shadow

    Slate Grey

    Slate Grey

    Anthracite Grey

    Anthracite Grey

    Midnight Grey

    Midnight Grey

    Deep Black

    Deep Black

    Dark Brown

    Dark Brown

    Chocolate Brown

    Chocolate Brown

    Warm Red

    Warm Red

    Ocean Blue

    Ocean Blue

    Mid Green

    Mid Green

    Any RAL Colour

    Any RAL Colour

    Glazing

    Choose the glazing you want for your windows

    As well as upgrading your windows, you’ll also need to think about the type of glazing for them. Our uPVC and aluminium windows come with EcoMAX Glass™, one of the most sustainable and eco-friendly glass units on the market, as standard. You can also choose Comfort Glass for higher levels of thermal efficiency, security and noise reduction, or decorative glazing, such as stained glass, floral patterned, or modern etched glass.

    Frame Options

    Choose the perfect profile for your finished window

    We have a number of distinctive styles of frame to choose from. The chamfered option is a contemporary, straight-edged style while the ovolo option provides a more traditional, decorative finish. Our flush option sees sashes that finish flush with the external face of the window.

    Chamfered Frame

    Chamfered Frame

    Flush Sash Frame

    Flush Sash Frame

    Ovolo Frame

    Ovolo Frame

    Advice + Guidance

    Window designs to suit your home in Harwich

    Making up substantial amounts of your home’s exterior, updating your windows Harwich is a sure way to add value and improve its aesthetics. Your neighbours and visitors will definitely notice replacement windows, so it is important that you get a perfect style that suits your home and area. With over 50 years of experience, we offer a plethora of designs and styles, so no window installation is ever the same!

    Our bespoke window service satisfies even the most niche requests, including arched windows, octagon or triangle shapes. If you’re looking for something a little more different, our designers will be able to easily fit these unusual shapes.

    With a large collection of window furniture options, your new windows Harwich will be custom-made for you. It includes sophisticated monkey tail handles, contemporary metal handles and genuine sash window lifts and fasteners in a range of chrome, brass and metallic colour choices.

    Browse our RAL Colour Guide
    Oak effect Residence 9 window interior
    Black uPVC casement window

    A+ energy rated double glazed windows in the South East of the UK

    Our highest-rated double glazed Windows Harwich really are the best available on the market, there’s no higher grade on the WER (Window Energy Rating) scale than A+. So, you can be sure that they’ll reduce your energy bills and keep the inside of your home at an optimum temperature. Live comfortably while saving money with new windows Harwich.

    We’ve achieved this state-of-the-art performance through a number of top-range technologies and features including multi-chambered window profiles, argon-filled inter-pane areas, low-e glass that’s specially treated to reflect heat back into a room, and the newly patented Warm Edge Spacer Bar. So, you can count on our innovative glazing options to significantly enhance the performance of your new windows.

    Furthermore, our commitment to sustainability includes offering almost 100% biodegradable EcoMAX Glass™ as standard on all uPVC and aluminium products. We also install advanced Comfort Glass options that are designed to outperform triple glazing thanks to the inclusion of a tough laminated layer and an effective low-e coating.

    Get A Price

    Visit Our Show Centres

    If you're in the Harwich area, we invite you to visit our showroom to experience the high quality and beauty of our premium windows, doors and conservatories firsthand. Our showroom offers the range of premium bifold doors, uPVC windows, French doors, and other home improvements. Explore the fantastic designs and innovations on display, and see how they can transform your home with the help of our fantastic fitters. Visit our showcentres today and discover the perfect combination of gorgeous products and great value for your home.

    Sneak Peek into Our Showcentre

    When you step into our showroom, you'll get a sneak peek into the world of high quality windows in Harwich.

    • Take your time
    • Ask questions
    • Let our friendly staff guide you through the showroom
    • Envision the perfect windows for your home

    Get a sneak peek of the possibilities and see how our windows products can transform your living space.

    Book A Showroom Appointment
    Ipswich SEH BAC double glazing showroom
    Full Residence 7 window installation

    Sleep safe and sound with highly secure windows

    Whilst you may live in a low-crime area, it never hurts to review the security of your windows. As we offer the latest security features, upgrading your windows could also reduce your insurance premiums.

    Our range of window security elements includes innovative multi-point locking systems as standard, multi-layered beaded frames that won’t weaken to harsh forces, high-quality handle locks and shoot bolt locks. Our aluminium windows are tested to PAS 24 as standard. Should your project require it, we can also fix the uPVC window hardware into the steel reinforcements and incorporate toughened glazing to enhance your home security further. Those with additional concerns can explore our range of locking mechanisms that can be incorporated into our window styles and find out what other specifications influence security.

    Get A Price

    Double glazing or Comfort Glass for new windows?

    Both EcoMax double glazing and Comfort Glass enhance energy efficiency and reduce noise pollution. But which is best for your home’s replacement windows?

    Double glazing is made from two high-performance panes of glass with a layer of argon gas between that is sealed with a warm edge spacer bar. Comfort glass combines two highly efficient glazing panels with a built-in laminate layer and a special transparent Low-E coating that stops 56% more internal heat from escaping. A much more effective insulator than triple glazing..

    All of our windows are A-rated for their thermal efficiency, meaning they will keep the cold from entering your home. So, choosing between double glazing and Comfort Glass really depends on your home’s needs. The utilisation of modern manufacturing in our high-quality double glazing provides a comfortable temperature for your home all year round.

    Get A Price
    Interior view of aluminium casement window
    Bedroom uPVC casement window

    Making the Right Choice with SEH BAC

    With so many options available, choosing the right windows for your home can be overwhelming. At SEH BAC, we understand the importance of making an informed decision and finding the perfect windows that meet your specific needs and budget. With our vast range of premium windows, including UPVC, aluminium, and composite options, you can be confident that we have the perfect fit for your home. Our sales approach is focused on understanding your requirements, guiding you through the process, and providing the necessary information to help you make the right choice. Trust SEH BAC for your home improvements, and make the right choice with premium windows that will enhance the beauty and functionality of your home.

    Get A Price

    Frequently Asked Questions

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

    How much will new 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 it's 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

    How do you replace windows in an old house?

    Run-down window frames can have a real impact on a property's thermal efficiency. Affecting old Victorian and Edwardian homes in particular, many homeowners are led to believe replacing windows in old houses is incredibly difficult - but it needn't be. Read more

    Begin Your Project

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







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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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      regional retail companies

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      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

      FENSA Approved
      GGF
      TSI Approved Code
      Ultra Installer
      TGAS
      Trustmark
      QA National Warranties
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