Casement Windows
An ever popular and classic choice, these windows allow easy operation and suit any home.
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0800 666 444Extend Your Summer with SEH BAC
Plus2 years interest free finance or buy now pay 2025**19.9% APR
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Explore our range of replacement windows, carefully crafted to match five distinct styles. Discover the choice between two exceptional materials: uPVC and aluminium. For those with unique preferences, we also offer custom window shapes that cater to unconventional requirements. Dive into a spectrum of 150+ RAL colors and various personalization options within the design and selection process, ensuring an ideal solution for your Harrow home.
Our glazing choices encompass advanced double glazing and innovative Comfort Glass, an efficient alternative to triple glazing. Additionally, we offer decorative glazing, all meticulously designed to maintain pleasant indoor temperatures, enhance home security, and provide exceptional noise reduction.
Get a priceView Window & Door BrochureContemporary, timeless, traditional & statement colour collections. Dual colour options are also available.
uPVC WindowsPremium matt, textured and metallic tones and shades. Dual colour options are also available.
Aluminium WindowsVariety of luxury finishes and authentic woodgrain foils. Dual colour options are also available.
Timber EffectAdvanced multi-chambered frames, A energy ratings as standard, and U-values of 1.2 W/m2K.
uPVC WindowsEnhanced thermally broken profile attains A+ energy ratings and U-values of 1.3 W/m2K
Aluminium WindowsAdvanced multi-chambered frames, A energy ratings as standard, and U-values of 1.2 W/m2K.
Timber EffectAn advanced shootbolt locking system that exceeds building regulation standards. Additional security extras can be included.
uPVC WindowsOne of the strongest construction materials available and fitted with advanced multipoint locks, it surpasses security regulations. Additional security extras can be included.
Aluminium WindowsModern multipoint locking systems, so they pass strict industry standards and they’re proven to secure your home from common burglary techniques.
Timber EffectAt least 35 years with no maintenance required. The anti-fade coating keeps the material looking pristine.
uPVC WindowsAt least 45 years, with no maintenance needed. It’s corrosion and rust resistant.
Aluminium WindowsAt least 35 years with no maintenance required. Unlike real timber, they will never need to be repainted.
Timber EffectUnique slimline frames will modernise any style of home and provide premium benefits.
Aluminium WindowsWith traditional features such as flush frames and seamless weld finishes, they can be approved for use in conservation areas.
Timber EffectBrowse Styles
Browse Materials
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 FAQsBrowse 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.
White
Clotted Cream
Pearl Grey
Chartwell Green
Elephant Grey
Slate Grey
Slate Grey Grained
Basalt Grey
Anthracite Grey
Anthracite Grey Grained
Black Brown
Steel Blue
Racing Green
Ruby Red
Turner Oak
Irish Oak
Golden Oak
Rosewood
Mahogany
Walnut
Dark Oak
White
Ivory White
Light Cream
Mid Cream
Green Grey
Grey
Smoke Grey
Warm Grey
Shadow
Slate Grey
Anthracite Grey
Midnight Grey
Deep Black
Dark Brown
Chocolate Brown
Warm Red
Ocean Blue
Mid Green
Any RAL Colour
Glazing
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
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
Flush Sash Frame
Ovolo Frame
Advice + Guidance
Related products
Revitalising a significant portion of your home's exterior, updating windows is a guaranteed method to enhance value and elevate aesthetics. Replacement windows won't go unnoticed by neighbors and guests, making it crucial to select a style that seamlessly complements your home and its surroundings. With more than five decades of expertise, we offer an array of designs and styles, ensuring each window installation is unique and meets out customers expectations.
Our tailored window service accommodates even the most specialized requests, encompassing arched windows, octagon or triangle shapes. For those seeking distinctive choices, our designers adeptly cater to these unconventional forms.
Choose from an extensive selection of window furniture options to personalize your new windows. Our offerings feature elegant monkey tail handles, modern metal handles, and authentic sash window lifts and fasteners, available in chrome, brass, and metallic hues.
Browse our RAL Colour GuideOur top-rated double glazed windows stand as the finest in the market, attaining the pinnacle of the WER (Window Energy Rating) scale with an A+ grade. This assurance means they are primed to lower your energy expenses and uphold an optimal interior temperature, particularly beneficial for homes in Harrow. Revel in comfort while achieving financial savings through these new windows.
This cutting-edge performance is achieved through a suite of premium technologies and attributes, including multi-chambered window profiles, argon-filled inter-pane spaces, low-e glass treated to effectively reflect heat back into rooms, and the newly patented Warm Edge Spacer Bar. With these innovative glazing options, you can confidently anticipate a significant boost in the performance of your new windows.
Furthermore, our commitment to sustainability extends to providing nearly 100% biodegradable EcoMAX Glass™ as the standard for all uPVC and aluminium products. We also introduce advanced Comfort Glass alternatives, designed to surpass the efficiency of triple glazing due to the inclusion of a resilient laminated layer and an effective low-e coating, ensuring homes in Harrow benefit from the latest window technology.
Get A PriceUtilising the same contemporary manufacturing methods that amplify the thermal efficiency of our windows, we also ensure the safety and tranquility of your Harrow home. Noise reduction is, in part, an added benefit of effective heat retention. Warm Edge Spacer Bars, multi-chambered profiles, and argon-filled inter-panes collectively diminish noise in both our double glazing and Comfort Glass windows, effectively blocking external disturbances from infiltrating your living space.
Our adept craftsmanship further enhances their noise-cancelling capabilities. Tight seals, panes, and frames are precisely fitted to create a draft-free design. With an extensive history of over 50 years, we exclusively employ professional and extensively trained installers, offering a steadfast assurance of our product quality.
Get A PriceEven in the peaceful corners of Harrow, it's wise to reconsider the security of your windows. Beyond peace of mind, our cutting-edge security features could also lead to reduced insurance costs.
Our collection of window security innovations includes ingenious multi-point locking systems as a standard feature. Crafted with multi-layered beaded frames, they stand resilient against formidable forces. Premium handle locks and shoot bolt locks further enhance security. Our aluminium windows are tested to meet PAS 24 standards. If your project necessitates it, we can securely integrate uPVC window hardware with steel reinforcements and integrate toughened glazing to elevate your home security. For those with heightened security concerns, our array of locking mechanisms work seamlessly with all of our window styles.
Get A PriceOur windows are crafted with the highest quality materials, ensuring they maintain their functionality for years. We stand behind our craftsmanship with a ten year guarantee, offering peace of mind and assurance in your investment. This commitment reflects our dedication to exceptional workmanship and customer satisfaction.
Check our finance optionsBoth EcoMax double glazing and Comfort Glass excel in energy efficiency and countering noise disturbances, tailored perfectly for the local environment.
Double glazing comprises two advanced glass panes with argon gas in between, sealed with a warm edge spacer bar. Comfort glass, on the other hand, combines two efficient glazing panels with an integrated laminate layer and a specialised transparent Low-E coating, preventing 56% more internal heat from escaping – a more effective insulator compared to triple glazing.
All our windows boast an A-rating for thermal efficiency, ensuring the cold remains at bay. Selecting between double glazing and Comfort Glass hinges on your home's distinct requirements. Leveraging modern manufacturing, our top-tier double glazing maintains a cozy environment throughout the year, perfect for Harrow's weather.
Get A PriceDiscover the elegance of integral blinds integrated into the double glazed windows' glass panes. Securely nestled within the window, this child-friendly safety system adheres to industry safety standards. Enclosed within the glass, these blinds require no maintenance, ensuring their pristine condition throughout their lifespan.
Double glazing with integral blinds is swiftly gaining popularity among Harrow homeowners due to its simplicity in regulating indoor temperatures, available through either a slider or a cordless slider option. These integral blinds effortlessly enhance privacy while allowing natural light to flood the room, creating a vibrant and airy interior ambiance.
Our integral blind collection offers a variety of sought-after colors to match your room's aesthetics. Horizontal or pleated styles can be seamlessly installed to suit your preferences. As you contemplate incorporating integrated blinds into your windows, consider extending this elegant touch to your bi-fold doors or conservatory for a harmonious and unified appearance across your Harrow home.
Get A PriceFind all the answers to our most frequently asked questions below.
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.
Modern double glazing lasts at least 20 years, but there are certain tell-tale signs you need to look out for. Read more
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
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
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