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Numerous styles of double glazed windows to consider

Originally far more basic in design and function, modern windows now come in a vast quantity of styles, colours and opening mechanisms. T&K’s selection is no different, with window options to suit a multitude of purposes.

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Are you looking for new windows for your home? This buying guide contains all the information you need to find the right windows for you.


Compare our window range

uPVC Windows Aluminium Windows Timber Windows
Styles Available Casement, Flush Sash, Vertical Sliding, Tilt & Turn, Residence 9. Casement, Fully Reversible, Tilt & Turn. Casement, Tilt & Turn, Vertical Sliding.
Colours 22 + RAL (dependent on style) 8 + RAL (dependent on style) 19, with dual and mixed colour applications available.
Woodgrain Finish 11 (dependent on style) Not available. 4 choices of actual wood, with a number of finishes.
Glazing Options Double and triple glazing available on every style except for vertical sliders (double glazing only) Double and triple glazing available on casement and tilt & turn windows. Double glazing only for reversible windows. A selection of glazing depths are available, as well as a range of glass types such as toughened, glare resistant and noise reduction glass.
Energy Efficiency Capable of a Window Energy Rating (WER) of A++ Can achieve U-values of just 1.2 w/m2K Certain configurations can achieve a Window Energy Rating (WER) of A+
Suitability For homeowners looking for a low maintenance option with plenty of style choices. For homeowners looking for something slender and stylish, as well as high performing. For homeowners looking for a touch of authenticity to add to their property.

Why choose T&K double glazed windows in Wellingborough and Northamptonshire?

There are a million reasons why you’ll be more than pleased with your windows from T&K but for the sake of simplicity we’ll break it down into just some of the most important reasons.

Windows that are thermally efficient

Thermally efficient windows allow you to stay warm and save money, meaning the cost of windows extends beyond the point of purchase. uPVC and timber are both natural insulators, whilst insulating polyamide barriers are inserted into the frames of aluminium windows to improve their thermal performance. The combination of this and technical features like weather seals and the quality of the glazing all determine the level of heat retention – meaning the right choice may eventually pay for itself.

We include a number of high-performance features as standard and provide others as optional extras. Triple glazing, for example, is one option you might consider to increase heat retention. Of course, the level of heat retention you choose depends entirely on your needs and preferences, so to find out more, get in touch via our form or simply call free on 0800 622 716.

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White uPVC flush sash windows with mechanical joints
White uPVC Windows

Windows that keep you safe

Although break-ins are very uncommon, when they occur, the effects can be devastating. Ground-floor windows and doors are by far the most frequent access points for potential burglars – but great security design allows you to sleep safe and sound.

At T&K, we’re proud to work with both Secured by Design and PAS24 – two British-Police-backed initiatives which equip, test and certify installers and designers who are serious about security. The majority of our windows also include advanced security locks and hardware. For further guidance on securing your home or to find out more about our range’s anti-burglary features please get in touch via our form or simply give us a call on free on 0800 622 716.

View our window locks & hardware

Windows that last a long time

Over time, weather exposure degrades windows. Although this is typically a decade-length process, the rate of degradation is influenced by a system’s weather-resistant features, which may mean the difference between needing a replacement and not needing one – or the difference between potential buyers factoring the cost of replacements into their decision.

Properly fitted window seals, panes and frames that keep in heat and keep out potential thieves also strengthen our systems’ resistance to weather. In addition, we offer deeper-than-average drainage channels and 10mm weather sealings as standard on many window models. To find out more about such features and others that improve window longevity, get in touch via a form or call us for free on 0800 622 716.

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uPVC Windows
Anthracite Grey windows and door

Windows that come in your choice of finish

We're well aware that having different tastes is a big part of what makes us human; what looks good to you will look dreadful to someone else and vice versa. So, this is why it's essential to have plenty of choices and when choosing windows from T&K, this is exactly what you get.

Our uPVC and aluminium windows come in 22 and 8 standard colour options respectively, although any RAL colour can be applied to their frames. Our timber windows also come in 19 different but equally beautiful finishes. Woodgrain finishes such as Light Oak, English Oak and Rosewood can also be applied to uPVC, whilst there are four types of timber and multiple finish options for them to choose from too. If you want a different colour for the interior and exterior window framing, this is no problem either.

Modern Anthracite Grey window frames to vintage Cream and classic Chartwell Green are just some of the popular colour options that we fit, although feel free to get in touch with us to discuss your colour preferences with our friendly team.

View our window colour options

Windows with flexible finance options from T&K

Pick what works for you. Everyone’s needs are different – so we offer a range of finance deals aimed at covering every type of homeowner. All window orders under £10,000 pounds can be purchased via one of the following:

3 years interest-free credit – 0.00 APR representative – no exit fees
£99.00 deposit – pay nothing for three months – 4.9% APR over a 60-month period
£99 deposit – pay nothing for 12 months – 19.9% APR over a 12-month period

All window orders over £10,000 may be purchased via one of the above or alternately via the following:
No deposit - pay nothing for 3 months – 5.9 % APR over 60-120 month period

For representative examples, please see our finance page, or get in touch with the team free on 0800 622 716.

Learn more about window prices
Black uPVC House Install

Which material is best for my windows?

All our T&K windows are secure, stylish and energy-efficient. So, depending on your home’s existing style, we can advise on whether uPVC, timber or aluminum is the best material for you and customize the perfect window to suit your home, without having to compromise on anything else.

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Do I need planning permission for new windows?

It is uncommon that you would need planning permission for new replacement windows for your home. But if you’re not sure, get in touch today and a member of our team will be happy to provide further advice on your home improvement project.

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How much do new windows cost?

With our affordable prices and range of finance options available, new replacement windows can fit your budget. We offer 3 years interest-free credit and ‘buy now pay later’ with a £99 deposit. Our prices are inclusive of a 10-year insurance backed guarantee and aftercare services.

Window prices

Which glass option is best?

Double glazing is typically sufficient enough to keep most homes warm, secure and energy-efficient. However, in some cases triple glazing noise reduction glazing may be better suited. Read here for more information on whether triple glazing is better for your home or speak to a member of the team today.

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Fabulous from start to finish

Fabulous from start to finish. I would have no hesitation recommending your organisation. Thank you […] for their professionalism.



couldn’t have asked for more

Throughout the process, he couldn’t have asked for more. All the staff have been helpful and friendly, and the finished installation is fantastic.



Competitive quote

Competitive quote – installed within two weeks. Excellent product professionally installed. Well done!



I would recommend T&K to anyone!

I would recommend T&K to anyone! They have done a fabulous job installing a new front door and canopy. First class job!



Job well done

Job well done. Really pleased with the quality of the workmanship and a great bunch of guys. Left the place spotless.



excellent company

We have had all our doors & windows replaced by T & K, excellent company.



Fantastic company

Fantastic company that designed the perfect conservatory for my home and at a very cheap price, I would recommend them to anyone.



Thank you for my recent installation

Thank you for my recent installation. I am delighted with the result, and would recommend your organisation without hesitation.


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Fully accredited company

With full accreditation from the appropriate regulating bodies, you can feel assured of the quality that’s on offer.

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Serving homeowners across Northamptonshire

During our tenure as traders, we’ve provided bespoke home improvement solutions across the Northamptonshire area and beyond. This includes areas in counties like Oxfordshire and Buckinghamshire. We've installed home improvements in places such as Corby, Northampton, Bedford, Kettering, Milton Keynes, Cambridge, Aylesbury, Oxford, Rugby, Bicester & Luton.

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You can upload a photo with the measurements, or we can talk you through how to do this over the phone. We can then provide you with a quote without the need for an appointment!

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