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Double glazing installations in Northamptonshire, Milton Keynes & the surrounding areas

Operating out of Wellingborough since 1979 as a leading home improvement company, T&K has proudly served Northamptonshire, Buckinghamshire, Leicestershire, Bedfordshire and surrounding areas for over 40 years. As home improvement specialists, we’ve manufactured and installed windows, doors, conservatories and much more for over 60,000 homes during this time. Founded by Kevin Johnson, the home improvement company remains proudly run by the Johnson family today. Our wealth of experience in home improvements, including uPVC windows, conservatories and orangeries and double glazed doors, combined with our family ethos ensures for an astounding service that retains a personal touch.

Whether you’re looking for windows in Northampton, double glazing in Kettering or conservatories in Rushden, we have the experience and local Northamptonshire knowledge to serve you with an excellent installation or repair, including conservatory refurbishments, for your home.

40 years of manufacturing and installing double glazing in Northampton


40 years’ experience

With over 40 years’ home improvement trading experience, T&K has built up an unparalleled level of product and installation expertise.

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Finance available

With buy now pay later and interest free credit finance options available, improving your home couldn’t be easier with T&K, including an interest free conservatory and excellent double glazing finance.


Fully accredited

T&K is now fully accredited by all relevant regulatory bodies, including Secured by Design. We've also been awarded top Trusted Trader status as a member of Which?'s Trusted Traders scheme.

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10 year guarantee

Any home improvement installation work performed by us comes with a 10 year guarantee, as standard.


Servicing & aftercare

T&K provides a devoted aftercare service for our home improvement installations. Once your installation is complete, our expert team will remain on hand to ensure it keeps functioning as it should.


Highly recommended

We’ve built up quite a reputation as a leading home improvement company in Northamptonshire since we started trading with double glazing in Wellingborough, resulting in many of our customers recommending our home improvement installations to others.


Every uPVC product we install at T&K has been exclusively fabricated by our sister company Emplas, who have over 35 years of experience in uPVC manufacture. This means we have direct influence on quality control and we’re able to offer ultra-quick lead times on our uPVC products.

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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, award-winning company

With full accreditation from the appropriate regulating bodies and a number of glazing awards to our name, you can feel assured of the quality that’s on offer.

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Which? Trusted Trader
Secured by Design
G16 Winner
G15 Winner
G14 Winner
G12 Winner

Serving homeowners across Northamptonshire

During our tenure as traders, we’ve provided bespoke home improvement solutions across the Northamptonshire area and beyond. This includes Corby, Northampton, Bedford, Kettering, Milton Keynes, Cambridge, Aylesbury, Oxford, Rugby, Bicester & Luton.

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Buy now pay nothing until 2020


3 years interest free credit

Finance deals