Harp Windows Ltd Logo

Harp Windows Ltd

Watford, Hertfordshire
+Approved member since 2014

Services and skills

  • Windows / Doors / Conservatories

    16 skills

    Aluminium Doors Installation

    Aluminium Windows Installation

    Bay Windows Installation

    Bifold Doors Installation

    Composite Front Doors Installation

    Conservatory Installation

    Double Glazing Installation

    Exterior Doors Installation

    French Doors Installation

    Patio Doors Installation

    Stable Doors

    UPVC Doors Installation

    UPVC Windows Installation

    Window Fitters

    Windows and Doors

    Wooden Sash Windows Installation

  • Services

    4 services

    • Domestic Work
    • Free Estimates
    • Insurance Work Undertaken
    • Cards Accepted


Customer reviews

Overall ratingin last 12 months

10Write a review
  • Workmanship10 out of 10
  • Tidiness10 out of 10
  • Reliability10 out of 10
  • Courtesy10 out of 10
Write a review

252 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

  • Replacement Windows

    10Verified Review

    Excellent company to deal with. Very pleasant installers and very happy with the result!

    Location: WD5
  • New front door and new Windows front of whole house


    From the moment I made contact with Harp Windows, they were very professional and helpful. John at the showroom listened to what I wanted and delivered exactly that! The two glaziers Rob and Robert are an asset and a real credit to Harp, very tidy, courteous and professional. It was a big job and tough in - 5 degrees and they did not stop, they worked very hard and were very pleasant at the same time! I would not hesitate to use them again, and highly recommend. I’m thrilled with the front of the house! Thank you Harp Windows

    Location: WD23
  • Window unit replacement to a sash

    10Verified 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: WD25
  • Replacement front door

    10Verified Review

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

    Location: WD23
  • Bay Window Replacement

    10Verified 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: WD24
  • Supply rear door.

    10Verified Review

    Excellent service, most helpful and friendly. Highly recommend.

    Location: BH10

Company profile

  • OwnerJohn & Amy
  • Member Since2014
  • Public Liability InsuranceSelf-Certified
  • AddressChecked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATYes: 541 1242 91
  • Company typeLtd Company

Company info

Since 1989 we have been manufacturing and installing high quality home improvement products to properties around Hertfordshire, Middlesex and North London. We're proud to offer our customers a wide choice of quality bespoke products, including Evolution Storm and Evolution Flush, the latest innovation in timber replacement doors and windows. See us at our Watford showroom on the St Albans Road or our factory in Old's Approach Watford, where we manufacture many of our products.

Our Mission:

To provide top quality local installations. We may not be the cheapest out there but we have full confidence in the quality and integrity of our products and our fitting teams. The outward appearance of most replacement windows and doors can be almost identical, but don't be fooled into thinking that all uPVC products are more or less the same! The quality of the materials, construction, overall design, locking and weather proofing systems can vary immensely from manufacturer to manufacturer. Here at Harp, we only install top quality products in uPVC, aluminium and timber: 

  • Rehau uPVC casement windows and doors
  • Evolution Storm and Flush timber replacement windows and doors
  • English Door Company for our premium range of front and back doors
  • Origin aluminium windows, doors and bifolding doors
  • Ultimate Rose uPVC premium sliding sash windows
  • Quickslide uPVC sliding sash windows
  • ALUK aluminium windows and doors
  • Kömmerling uPVC casement windows and doors
  • Gerda High security contemporary aluminium and steel doors
  • Bereco sustainably sourced engineered timber windows


Sales and Service:

Over the years, we’ve worked hard to build a reputation for professional integrity, efficient customer service, high quality products and value for money. Customer satisfaction is paramount to us, we do everything possible to ensure our customers are delighted with their new windows, doors or conservatory. Our commitment to our customers does not simply end once your installation is complete. We provide a comprehensive aftersales service which provides total peace of mind for all our customers and we are fully committed to providing our customers with an after sales service that is second to none.


Browse our comprehensive Checkatrade Image Gallery for a great selection of photos of our many installations.

Contact details