Win-Dor is a top home improvement and double glazing company, serving Northampton, Milton Keynes, Oxford and the surrounding towns and villages for more than 35 years. We manufacture all our windows, doors and conservatories (uPVC and aluminium) ourselves - guaranteeing you will get the best quality home improvements, and of course, the best price. If you're thinking of upgrading your windows and doors, or creating extra space with a new conservatory, why not check out some of the beautiful home improvements we have on offer?

Established in 1978, Win-Dor is the leading home improvement specialist for the Northampton, Milton Keynes, Buckinghamshire, Bedfordshire and Oxfordshire areas. We offer an extensive range of windows, doors, conservatories and orangeries; all of which are available in a wide choice of colours, and are backed by our 10 year guarantee. Ever heard the saying 'big enough to cope but small enough to care'? Well, this perfectly sums up Win-Dor. We're not a big national company that sees each customer as a number, we're a local company that prides itself on going the extra mile for our customers and providing truly brilliant service.

Triple glazed windows from Win-Dor achieve outstanding Window Energy Ratings. They also achieve incredibly low U-Values - a system which is used to measure a window's heat loss. A window with a low U-Value indicates that it is an energy efficient and thermally retentive window. Higher U-values show that a window is more inefficient. Using triple glazed Argon sealed units, our windows can achieve a U-Value of 0.8 W/m2K, which is roughly twice as efficient as current building regulations stipulate.

Windows manufactured by Win-Dor can not only improve your home's aesthetics, but they also have outstanding thermal properties. Our uPVC windows are capable of achieving an 'A' Window Energy Rating (WER) when used in combination with high quality glazing units. By referencing our windows against the WER alphabetical scale from A to G with - with A being the best and G the worst - our uPVC windows more than satisfy the minimum requirements stipulated by building regulations, with C being the minimum required standard.

Want the authentic appearance of timber sash windows but don't want the hassle of regular wood treatment and window maintenance? Win-Dor uPVC sash windows are the perfect solution, combining both the traditional aesthetics of a timber box sash window with the low maintenance levels and general convenience of modern uPVC materials. Our windows can not only boast slim sightlines, Georgian bars, and a deep bottom rail, but also the option to feature clip on or run through horns, so you can choose if you want to exactly replicate traditional timber aesthetics.

With tall, sloping roofs and majestic lines, a gable-fronted conservatory from Win-Dor is the perfect way to add a touch of drama to your home whilst also improving thermal insulation and floorspace. Combining simple, yet elegant detailing and a grand, striking height, gable conservatories are designed to impress. Instead of sloping backwards, the front panel of a gable-fronted conservatory is fixed so that within the structure there is a greater feeling of height. In addition, with a large floor area, a gable conservatory is perfect for adding extra usable space to your property.

Specifically designed to help reduce the amount of heat that would normally escape the home, aluminium windows from Win-Dor make effective use of a thermally broken frame that helps provide homeowners with a window that has distinct advantages to result in a more comfortable home. Opting for aluminium windows means insulating your home, improving aesthetics and more. Modern aluminium windows installed by Win-Dor combines good quality glazing with an expertly designed profile. This helps make every part of your home suitable for use all year round, reducing the risk of pesky draughts without any swelling or rattle.

Sometimes conventional conservatory styles and designs just won't fit the needs of your property. If this is the case, don't worry: Win-Dor can help. Our team of conservatory experts can design a bespoke conservatory from your exact design specifications, allowing you to build the conservatory best suited to your property. Bespoke conservatories from Win-Dor allow you to create a completely unique structure that can be customised to the demands of your property and project. With a huge range of colours, finishes and hardware to choose from, bespoke conservatories can suit practically any property: whether it's in a traditional or modern style, making them a valuable addition to any home.

For homeowners who want the best in security and efficiency, but also want a door which looks good, composite doors are the perfect choice. Compared with traditional timber or uPVC doors, composite doors from Win-Dor can offer comparatively higher levels of security and energy efficiency due to their multi-layered construction. Composite doors from Win-Dor are made to please even the most discerning of customers. Featuring GRP skins which give the door a traditional timber look and fine panel detailing, we fit an aluminium cloaking profile to both the hinges and locks for further improved aesthetics.

A solid roof conservatory from Win-Dor successfully retains heat and eradicates any possible cold spots that may occur in your conservatory. We use an innovative conservatory roof system that uses the benefits of timber to create a warm roof construction. Thanks to the use of thermally efficient structural insulated panels, Win-Dor solid roofs can achieve U-values as low as 0.18W/m2K. Having a conservatory with a solid roof allows you to use it at all times of the year and take full advantage of the beautiful changing seasons that may otherwise pass you by.

Transform your outside space with a stunning veranda from Win-Dor. They are the perfect way to extend your living space and make those summer nights even longer. With integrated heating and lights available, your garden will be the ideal spot for parties. Verandas can be used for your outdoor dining area so no more need for an umbrella with continuous weather protection all year round. Enjoy getting some fresh air whatever the weather or take the bins out without getting soaked. A veranda can also be used to protect your decking or paving and as a place to store items outside without being damaged by heavy rain.

With their simple aesthetics and bold lines, Edwardian conservatories suit practically every style of home. Adding great usable space to a property whilst maintaining a traditional aesthetic, an Edwardian conservatory really can help to transform your home. The Edwardian conservatory style is one of the best for creating additional space around your home. With a large floor space, Edwardian conservatories are perfect for increasing the footprint of a property. Used for a variety of purposes, including dining rooms, play rooms, offices and snugs, when it comes to using your Edwardian conservatory, your imagination is the limit.

Suited to larger properties, the P-shaped conservatory combines elements of Victorian and Lean-to conservatory styles making it the best choice for families. With the aesthetics and space benefits of a Victorian style and the extra natural light transmission of a Lean-to style, P-shaped conservatories provide the perfect balance of traditional aesthetics and modern performance. Taking their name from their distinctive shape, P-shaped conservatories benefit from an increased footprint which provides more space than conventional conservatories.

When deciding on new windows for you home, it's important that you choose the right ones for you. Whether you want to match your house's existing features, or you want your windows to be particularly energy efficient, Win-Dor can offer you a huge selection of styles and specifications to choose from. Available in both uPVC and aluminium, Win-Dor can manufacture and supply windows in virtually any style to suit your home, be it casement, sliding sash, or tilt and turn. All are manufactured in-house, meaning that we have complete control over the process from start to finish, and that you can be assured that our windows are high quality and made to exactly match your home.

Whether you are looking for uPVC or aluminium windows for your property, we have a comprehensive range of double glazed windows sure to suit any home. Featuring innovative designs and the latest technological advances, our uPVC windows can offer the best in security, low maintenance and energy efficiency. Our windows not only offer high levels of practicality, but they also look great, too - as well as performing to high standards of thermal and acoustic efficiency, they are also very aesthetically pleasing.

If you find that you're suffering from a stuffy or unloved conservatory or orangery, it's more than likely an issue that can be resolved with a simple conservatory roof replacement from Win-Dor. After several decades of use, the roofs of conservatories installed in the 80s and early 90s can begin deteriorate, offering next to no level of energy efficiency or heat retention. A new replacement roof can revitalise the space without the need to pay for an entirely new build. A conservatory roof replacement from Win-Dor comes precisely manufactured in uPVC and aluminium for your specific roof size, guaranteeing a weathertight fit that will help reduce the heat loss that would typically occur.

Whether you are looking to replace an ageing front door, or simply add some extra character to your property, we have a range of uPVC entrance doors to suit you. To suit a variety of installations, our entrance doors are available in both open in and open out styles and a huge range of colours, so no matter the layout of your property, we can provide you with a door which fits you. Whether you want a decoratively styled door suitable for traditional homes, or glazed or panelled doors more suited to contemporary modern houses, we can supply you with uPVC doors in a wide range of styles.

If you want a modern alternative to traditional patio or French doors, bifold doors are an excellent choice for the modern, discerning homeowner. Unlike other designs, bifold doors are able to create especially wide openings onto outdoor spaces and seamlessly connect indoor and outdoor spaces, and if you have a preference of material, Win-Dor are able to supply bifolds in both high quality uPVC and aluminium variations, in a wide range of colours and styles. Win-Dor bifolding doors are designed to facilitate open-plan living, giving you the ability to create an aperture in your home up to 5 metres wide.

Combining the traditional extension with the design benefits of a conservatory, Win-Dor Orangeries can offer you the best of both worlds. Owing to their partially glazed roofs, they create a which is light and open, but because of their solid pillar construction they also remain cosy and inviting all year around. An orangery from Win-Dor will not just add value to your home, but will also give you a space which exudes stylish, contemporary living. Win-Dor orangeries are designed to be simple and straightforward to fit from the ground up.

Stable doors stand out in their ability to combine traditional styling with unique functionality. Win-Dor can provide you with uPVC stable doors which are suited to a more traditionally styled home, replicating an authentic farmhouse door's appearance, whilst still maintaining high levels of performance and usability. With stable doors from Win-Dor, both halves of the door are able to operate independently, which allows you to easily control levels of ventilation and light by choosing which sections you would like to keep open or closed.

Here at Win-Dor, we care about your security. That's why all our home improvement products are accredited by Secured by Design. We want to give you the most choice while still ensuring that security is never compromised. Secured by Design is a police backed initiative that was founded in 1989. Its aim is to prevent the risk and fear of crime. It does this is by setting out standards that windows and doors should achieve as well as new housing developments. To gain Secured by Design accreditation, windows and doors must at least be at PAS24 standard.

Win-Dor have over 35 years of experience in the fenestration and glazing industry - having grown to become one of the country's leading suppliers of uPVC and aluminium windows, doors and conservatories. A huge part of our continued growth is due to the hard work of our committed, knowledgeable staff. Win-Dor on its own employs 32 dedicated staff, as part of the 250 working for Astraseal as a whole - offering you high end products with local service and industry experience. At Win-Dor we see ourselves as 'your local national company', having enough experience and backing to provide you with quality home improvements, but also with enough local presence to offer a personalised experience.

If you live in or near the Northampton and Milton Keynes areas, then why not visit one of our extensive showrooms? With a combined floor space of over 15,000 square feet, our showrooms are filled with a comprehensive range of our beautiful windows, doors and conservatories, all available for you to browse at your leisure. If you're interested in purchasing home improvements for your property, or even if you're just curious about the range of products and services we can offer, we would highly recommend that you pay us a visit.

Patio doors from Win-Dor offer great aesthetics, and are an excellent choice of door for homeowners wishing to create a wide opening onto an outdoor space. Win-Dor can manufacture and install patio doors which offer some of the slimmest profiles on the market, which means we can offer you better sightlines and a product designed to match our range of windows and doors. Because our patio doors feature especially slim profiles, the door's frame is less intrusive on your property's interior when not in use, and they can help add a sense of openness and light to your home.

One of the most popular conservatory styles, the Victorian conservatory is incredible versatile and is suited to both modern and traditional properties. Combining exceptional period aesthetics with contemporary thermal performance, our Victorian conservatories can revitalise your property and transform how you use your home. Victorian conservatories from Win-Dor are designed with beautiful period aesthetics in mind. Utilising traditional features such as a steep pitched roof, ornate detailing and elegant roofing girders, our Victorian conservatories are perfect for homeowners wanting to add a period touch to their property.

French doors are a great choice for homeowners who wish to connect their home to outside living spaces, but don't have the space to fit large bi-folding or patio doors. Because of their classic styling, French doors are also a good choice for those looking to fit doors on a traditional property, whilst also getting the benefits of unrestricted access and maximum ventilation. Win-Dor French doors are also one of the most competitively priced products on the market, so you can be assured that if you choose Win-Dor you'll be getting fantastic value for money.

A hybrid conservatory style combining elements of Victorian, Edwardian and Gable conservatory designs, T-shaped conservatories enable you to create two versatile spaces in one structure. Incredibly adaptable, T-shaped conservatories are suited to a huge range of properties, including both modern and period styles can be used to add impressive aesthetics to your home. Particularly suited to larger properties, the innovative design of a T-shaped conservatory allows for two distinct spaces in your conservatory structure.

Suited to heritage and contemporary properties, the large glazed surface area of a lean-to conservatory maximises the transmission of sunlight in a property, filling it with natural light. It's no surprise then that this conservatory style is also known as a ‘Sun Lounge'. Incredibly cost-effective, Lean-to conservatories are perfect for homeowners on a budget, and provide all the same space and light benefits of other conservatory styles. Crafted from high quality uPVC, they're very durable and long-lasting, as well as being very easy to maintain.

At Win-Dor we offer a full range of uPVC window styles and additional glazing options, installed with care and attention to offer homes throughout Milton Keynes and Northampton, the very best in performance and versatility. Combining classical aesthetics with modern energy efficiency, you can be assured that our uPVC windows are the perfect solution for every style of home. Utilising multi-chambered frames wrapped using modern uPVC material, they will ensure that your home runs at the pinnacle energy efficiency to reduce your energy bills and retain warmth.

Whether you're looking for a replacement entry door, or a door to open the rear of your house onto a garden or patio area, Win-Dor can offer you a comprehensive range of doors to suit the configuration and style of virtually any home. All of our doors are fully customisable, and can be made to complement our range of windows and conservatories to help you achieve virtually any look you want for your property. Depending on the door's style and purpose, we can supply you with doors in a range of materials to suit both your aesthetic and performance requirements.

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