Download our windows buying guide

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 replacement windows from T&K home improvements?

Here are just some of the reasons why you should choose to get your new double or triple glazed windows fitted by T&K.

Versatile window designs in Luton, St Albans, Cambridge and Bedford

It's essential to have plenty of choices when choosing new windows because every home and every homeowner is different. That’s why we offer a plethora of styles, colours and finishing elements for a unique design for each and every project that we work on.

Depending on the window material that you opt for, there are a varying number of colour options. We also offer wood effect finishes which are ideal if you’re looking to retain the traditional charm of your property or add a touch of character. Modern pebble grey window frames, claystone and sage smooth are just some of the popular colour options that we fit. You could even choose to incorporate dual colour options so that the outer and inner frame are different colours.

We offer a large collection of window furniture pieces, ranging from sleek modern bars to classic monkey tail handles. They’re available in a number of styles to add the perfect finishing touches to your new windows. Decorative glass is also available in an array of patterns to add a bespoke aesthetic to any window.

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Anthracite Grey windows and door
Residence 9 window installation

Windows that are thermally efficient

Thermally efficient windows allow you to stay warm inside of your home whilst saving money on your energy bills, meaning the cost of windows extends beyond the point of purchase. We source only the highest-quality materials, which is why our windows are able to achieve A+ energy ratings, the very best available on the WER (Window Energy Rating) scale.

We use a number of advanced features to maximise the energy efficiency of our replacement windows, including weather seals, innovative glazing and warm edge spacer bars. Depending on the window style, you could choose between double or triple glazing for your new windows which can achieve U-values as low as 0.8. They have either two or three panes of glass that encompass an argon-gas filled chamber to keep the heat inside and stop the draughts from entering your home. With energy wastage minimised, your home’s carbon footprint will be drastically improved.

Windows that will keep the external noises outside

If you currently experience the outdoor noises are disrupting your peace and quiet inside, it’s a sign that your windows have become tired and aren’t performing as they should. With our high-performance windows, you’ll instantly notice that your home is much quieter so you can relax in a comfortable environment.

All of the features that enhance the thermal capabilities of our windows also help with their noise reduction performances. This includes the multi-layered frames, warm edge spacer bars and high-quality glazing panes. Tightly-fitted by our expert installers, with new windows you’ll be able to enjoy a better standard of living.

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White uPVC flush sash windows with mechanical joints
Black uPVC flush sash bow window

Keeping your home safe in Market Harborough, Peterborough, Banbury and Dunstable

Although break-ins are very uncommon, when they occur, the effects can be devastating. That’s why we’re proud to work with both Secured by Design and PAS24. These are two British-Police-backed initiatives which equip, test and certify installers and designers who to confirm the protection of home improvement products.

All of our replacement windows include advanced security locks and hardware that vary with each style. This includes multi-point locks, shootbolt locks and sash window locks. They’re rigorously tested to strict security standards to give you peace of mind that your family are safe and secure from forced entry. If you’re looking for even further protection, we can incorporate additional security elements to your custom-designed windows.

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Windows that last a long time

Over long periods of time, weather exposure can degrade the performance of windows. The rate of degradation is influenced by a system’s weather-resistant features, with poor-quality windows needing to be replaced much quicker than advanced systems. With T&K, you can be sure that your new windows will last for many years to come, keeping your home protected.

Our replacement windows have been tested to extreme weathers, including harsh winds, heavy snow and stormy conditions. And time after time, they’ve proven an exceptional ability to stay completely intact. This is because of a range of stormproof elements we incorporate into our range of windows, including deeper-than-average drainage channels and 10mm weather sealings. We finish our window frames in a protective coating which not only stops the colour from fading, but it protects the materials from absorbing moisture, warping or splitting. So, no matter the conditions, they’ll continue to perform and look like new.

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uPVC Windows
Cotswold Green Residence 9 windows

Windows that can be fitted with double or triple glazing

The choice between double or triple glazing for new windows is completely dependent on specific requirements, but both of which will improve thermal performances and reduce noise pollution. Here’s an overview of the benefits of each, but for individual guidance, get in touch with our team who can advise on the best option for you.

Double glazing is fabricated using two panes of glass which surround a chamber that is filled argon gas and sealed with a high-performance warm edge spacer bar. Triple glazing includes an extra pane of glass and has two argon-gas filled chambers and can achieve U-values of 0.8 W/m2K.

Double glazed windows are the most popular choice with UK homeowners because of its superior thermal performances and ability to achieve A+ energy ratings. With double glazed windows, you’ll be able to save money on your energy bills. Triple glazed windows stemmed from Scandinavian climates, and as they are 5 times more energy-efficient than a standard window, their thermal performances are unparalleled. They’re ideal for homes that are exposed to harsh weather climates or near airports and main roads as the additional pane of glass improves their nose reduction abilities.

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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.

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Green timber casement windows

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.

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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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Fully accredited company

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

Which? Trusted Trader
Secured by Design

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, Market Harborough & Banbury.

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