• Showroom & Head Office

    01923 231 111


  • Integral blinds – a quick guide

    January 23, 2020 by harp_admin

    Integral sealed unit blinds can be fitted inside any window or door in sizes from 300mm to 2600mm wide and in any frame – timber, aluminium or uPVC – and can even be retrofitted into existing doors and windows (that are glazed with sealed units). They are installed

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  • Authentic Georgian Style with Evolution Windows

    November 12, 2018 by harp_admin

    The Georgian window is the original multi paned window which became popular in the Georgian Period 1714 -1811 and was designed to bring in light, especially in darker narrow streets. Another notable feature were the intricate glazing bars which held in the brittle


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  • The intricacies of the sash window

    November 5, 2018 by harp_admin

    Are you a homeowner looking for replacement sash windows? Do you want your new windows to have a tasteful traditional aesthetic with modern performance levels? Do you want the best uPVC sash windows for your home? If so, our Ultimate Rose uPVC sash windows could be


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  • The Six Stages of Recycling a uPVC Window

    October 23, 2018 by harp_admin

    See how a uPVC window gets recycled, the REHAU way. From installers to collectors and local authorities, Rehau make it easy to recycle.


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  • Our new St Albans Road showroom

    July 27, 2018 by harp_admin

    Our new larger showroom is now open at: 91-93 St Albans Road Watford Hertfordshire WD17 1UL PARKING: We have a large car park to the rear which is accessed from West Street. Satnavs can use the alternative postcode WD17 1RY which will guide you to our car park.


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  • The Origin aluminium front door is here

    April 20, 2018 by harp_admin

    Unlock your home’s potential with the Origin Residential Door, where security and aesthetics are superbly combined. The Origin Home, a collection of the finest quality products, exquisitely designed and skilfully manufactured in Great Britain by Origin, is proud to


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  • Meet our latest edition of our sash window family

    January 31, 2018 by harp_admin

    Slim sightlines. Run-through sash horns. Mechanical joints. Our Ultimate Rose sash windows are packed with authentic features.   Sash windows are quintessentially British; they’ve been an important part of our architectural heritage from the late 17th century


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  • Bifold doors -v- sliding doors – which to choose?

    November 30, 2017 by harp_admin

    When choosing whether to have a sliding patio door or a bifold door, there are a number of factors that you may wish to consider.   If you had asked this question a few years ago it would have been a done deal. The bifold door would have won hands down every

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  • The Purdy Project, Chorleywood

    June 8, 2017 by harp_admin

      PROJECT: NEW BUILD ORANGERY IN CHORLEYWOOD, HERTS. Customer: Ms Purdy Brief: Build brand new orangery and extend and lay new patio area In the beginning … The property was detached with an “L” shaped rear elevation which lended itself


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  • Check out our cool new video!

    February 14, 2017 by harp_admin

    We’ve been tapping into our creative vibe and have put together this cool little video – 2017 will be our 28th year of continuous trading and then as it is now, our professional ethos still remains the same: to provide top quality local installations.


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  • Our customers have rated us at 100% through the CPA!

    July 19, 2016 by harp_admin

    THE LATEST CUSTOMER SURVEY FROM THE CONSUMER PROTECTION ASSOCIATION HAS RATED US AT 100%. Not that we like to blow our own trumpet of course, but the latest figures up until 30/06/2016 are now in from the CPA and they are looking pretty good. (Well a bit more than


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  • The Trusted Trader Code of Conduct

    June 22, 2016 by harp_admin

    Since May 2016 we have been fully endorsed as a Which? Trusted Trader. This is a scheme that recognises reputable traders who successfully pass the rigorous WHICH? application process. As a Trusted Trader we have agreed to abide by the WHICH code of conduct and the


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  • Exciting new inscreen solar controlled blinds!

    June 8, 2016 by harp_admin

    Introducing the “W-System Swipe” integral blinds. Wire-free, solar powered eco-friendly and fully automated. Perfect for a sunny kitchen/diner with bifold doors. First there was manual. Then there was motorised. Now there is solar powered – the


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  • What is a WHICH Trusted Trader?

    April 20, 2016 by harp_admin

    SO, WHAT EXACTLY IS A WHICH TRUSTED TRADER? Exciting times are ahead – we are now fully endorsed as a Which? Trusted Trader. This is a scheme that recognises reputable traders who successfully pass the WHICH? rigorous assessment process. Not just anyone can


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  • Say goodbye to the 45° corner welds for good with our innovative new timber look corners!

    February 1, 2016 by harp_admin

    FAB NEW TIMBER LOOK CORNERS ON OUR EVOLUTION WINDOWS MAKE IT EVEN HARDER TO SPOT THAT THESE STUNNING WINDOWS AREN’T REALLY WOOD! We’re really excited about this latest innovation from Evolution! Gone are the telltail 45° corner heat weld marks that are


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  • Industry-acclaimed A+ rated windows and doors – as standard.

    January 21, 2016 by harp_admin

    OUR ENERGY EFFICIENT A+ RATED REHAU uPVC WINDOWS AND DOORS GUARANTEE TO KEEP YOUR HOME WARM THIS WINTER! Here at Harp, we are great believers in quality, and with our standard Rehau uPVC windows and doors, you get just that. Our REHAU range of windows and doors


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  • You can achieve sliding perfection with our Origin bifolding doors

    December 5, 2015 by harp_admin

    ORIGIN GLOBAL IS THE WORLD’S LEADING SPECIALIST MANUFACTURER OF ALUMINIUM BIFOLDING DOORS. Like all replacement window and door products, you usually get what you pay for. We only ever focus on quality at Harp, and whilst this won’t always make us the


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  • What makes an English Door a cut above the rest?

    November 25, 2015 by harp_admin

    THE ENGLISH DOOR COMPANY™ OFFERS AN EXTENSIVE COLLECTION OF TIMBER ALTERNATIVE DOORS THAT WILL ENHANCE ANY HOME. The range of designs, colours, styling and glazing options means you can create a door that is truly unique to you. In a different league from your


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  • What exactly is a “timber replacement” window?

    November 12, 2015 by harp_admin



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  • Condensation on your windows – what does it mean for you?

    November 3, 2015 by harp_admin

    DON’T PANIC IF YOU SEE CONDENSATION ON THE OUTSIDE OF YOUR WINDOWS – this means your energy efficient glass is working! Twice a year, during Spring and Autumn, you are more likely to see condensation forming on the outside of your windows, usually first


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  • Did you know that all double glazing is NOT equally energy efficient?

    October 30, 2015 by harp_admin

    ARE YOUR DOORS AND WINDOWS ENERGY EFFICIENT? Lower your energy bills without compromising on comfort! If you are considering new windows and doors, ask your installer for PLANITHERM, a new generation of energy saving window glass designed to reflect radiated heat


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  • May 9, 2015 by harp_admin

    Visit our Bushey Arches showroom and see for yourself what a difference Evolution could make to your home.


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  • by harp_admin

    Come on everyone, vote for us on March’s #coolwall for our stunning @Originbifolds installation in Bucks Hill, Herts.


    Read More>>

Endorsements & Reviews

Watch Our Videos

Window unit replacement to a sash

10 Verified Review

Fantastic service from beginning to end. Local showroom in Watford with a super variety of windows and doors The fitment of the sash for my son's bedroom, best decision. Quality window and beautiful finish Paul and Miles are polite and friendly. Paul is a master at his job and Miles is super when finishing and completion. Thanks guys and thank you Harp Windows

Location: WD25September 2023

Replacement front door

10 Verified Review

All appointments on time. Advice useful when choosing design. Fitted in less time than expected.

Location: WD23August 2023

Bay Window Replacement

10 Verified Review

I have to say I have been impressed with HARP from start to finish. I was guaranteed the best price from John at the beginning, There was no hard sell or tricks, Just simple and honest. I ordered 1 window to replace my old bay which I was advised would take 6 weeks from ordering. My window arrived slightly earlier than anticipated and was fitted without delay. The fitting team worked in a clean and tidy manner, were punctual and had a great attention to detail.

Location: WD24July 2023

Supply rear door.

10 Verified Review

Excellent service, most helpful and friendly. Highly recommend.

Location: BH10May 2023

2 x casement windows

10 Verified Review

Very pleased with product and workmanship. All done with no fuss and no mess. Brilliant job. Billy even hoovered up afterwards !

Location: WD18May 2023

New windows and doors

10 Verified Review

Excellent service from both the showroom staff and the fitting team . Quality of the windows and doors is very good , and would highly recommend this company

Location: WD24April 2023

Read all 250 reviews

  • Harp Windows (Watford) Ltd
  • 91-93 St Albans Road
  • Watford
  • Hertfordshire
  • WD17 1UL



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