Double Glazing Bi-fold

Windows & Doors

Harpenden Windows was established over 30 years ago as a family-run business, offering a more personal and refreshing approach to the double glazing industry. We are proud to be the only company who manufacture uPVC windows and doors for you here in the heart of Harpenden. 

We put quality and service first and only ever use the finest materials in our uPVC products. We have grown on a reputation of trust, professionalism and quality. The majority of our business comes via recommendation.
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Harpenden double glazing windows


We install quality energy rated, high security, uPVC


double glazed windows

Harpenden Door Company


View our range of secure, durable & stylish uPVC &


composite doors

Orangeries in Harpenden


Add space, add value with a stylish orangery


or glass extension

Coloured uPVC Double Glazing

Coloured uPVC

View our range of stylish, realistic wood effect


& solid colour uPVC

Gutters, soffits and fascias in Somerset


View our range of durable, weather resistant


roofline products

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Market leading double glazing in Harpenden and across Hertfordshire

As established specialists in the double glazing industry, Harpenden Windows offer our customers a comprehensive range of quality, market leading uPVC windows, doors and roofline products. All of our products are available in a wide range of design, colour and finish options to compliment your home. - From traditional to contemporary, you can be sure that we'll have a style to suit your property. Furthermore our double glazed products are energy rated, helping our customer to make their homes more energy efficient.


Double Glazing Accreditations


Over 30 successful years, hundreds of happy customers, and more to come...

All of our uPVC double glazed products are manufactured to your exact specifications by our skilled team here in our Harpenden factory. We have been manufacturing and installing windows, doors and roofline products in Harpenden and the surrounding areas for over 30 years. We are proud of our local reputation, built on our commitment to product quality, service and value for money - as a family-run business and your local FENSA Registered installation company we don't believe in high pressure salesmen or over-inflated prices, just genuine value for money and quality customer service.


"Without exception everyone has been most amenable and helpful working tidily and to a proficient and efficient manner. We will certainly recommend Harpenden Windows."