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Harpenden Window Company Limited

As a family-run business with over 30 years experience, we have grown into one of the leading local manufacturers and installers of quality uPVC double glazing windows and doors. We have developed an enviable reputation for trust, professionalism, quality and open and ethical trading and have continued to meet the very high expectations of thousands of customers in Harpenden and throughout the area.

Why choose double glazing from Harpenden Windows?

  • 30 Years of succesful trading
  • Family run local business
  • FENSA Registered
  • No Pressure Salemen
  • Manufactured by Industry Experts in Harpenden
  • Free No Obligation Quotation & Advice Service
  • Our Own, Highly Experienced Fitting Teams
  • Comprehensive Product Guarantees
  • Over 90% of our work is via recommendation

Harpenden’s Leading Manufacturer

Our reputation is based on firm foundations, we supply windows and doors to meet customers precise expectations and we’re proud to say that the majority of our business comes via recommendations. We are a customer focused company who generate most of our business from recommendations and word of mouth. We know from vast experience that if you look after customers they will look after you.


Family-run, trusted, professional

Whatever your requirements, Harpenden will manufacture and install the very finest quality uPVC windows, doors and roofline that will truly transform your home or building project. As local manufacturers, we don’t employ middlemen or commission-based salesmen, instead we offer genuine advice and free, no-obligation quotations. Our factory is situated in the heart of Harpenden and customers are welcome to visit and have a look around our facility and showroom. Our expert team of fitters are qualified and experienced professionals, and are all long-serving, so we know how reliable and respectful of your property they are. – And what’s more, all of our products are custom-made to your exact specification and covered by our comprehensive guarantees, giving you year-on-year peace of mind.


Accredited Double Glazing: Quality Products

From 1st July 2013 it became mandatory for manufacturers of windows and doors to apply CE Marking to their products. CE marking indicates that a product conforms to legal requirements in specific European technical standards known as harmonised European Norms (‘hEN’). It enables a product to be placed legally on the market in any European member state. However, regulatory requirements may differ from country to country.


Declaration of Performance

A key part of the CE Marking process is that a Declaration of Performance must be produced by the window manufacturer. The Declaration of Performance details all of the essential characteristics of the product and enables the information to be available to the end user. The document has to be available in the public domain, so not only does the certification need to accompany the product it needs to be visible in places such as our website.


Contact Details

Unit 17 Marlborough Park

Southdown Industrial Estate



phone 01582807937

Mon: 8:00 am - 4:00 pm

Tue: 8:00 am - 4:00 pm

Wed: 8:00 am - 4:00 pm

Thu: 8:00 am - 4:00 pm

Fri: 8:00 am - 4:00 pm

Sat: Closed

Sun: Closed

Residence Doors Residence 9 Residence 7
I have a Sample Window to show you I have a Showroom for you to visit We are the Manufacturer / Craftsmen I’ve done over 5 installations I’ve done over 20 installations I’ve done over 50 installations I’ve done over 100 installations I’ve done over 200 installations I’ve done a Conservation Area installation 5+ installations in Conservation Areas 20+ installations in Conservation Areas
Fensa Approved

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Contact Harpenden Window Company Limited