Harp Windows Ltd Logo

Harp Windows Ltd

Watford, Hertfordshire
+Approved member since 2014
Bifolding doors

Services and skills

  • Windows / Doors / Conservatories

    16 skills

    Aluminium Doors Replacement / Installation

    Aluminium Windows Replacement / Installation

    Bay Windows Replacement / Installation

    Bifold Doors Replacement / Installation

    Composite Front Doors Replacement / Installation

    Conservatory Replacement / Installation

    Double Glazing Replacement / Installation

    Exterior Doors Replacement / Installation

    French Doors Replacement / Installation

    Patio Doors Replacement / Installation

    Stable Doors

    UPVC Doors Replacement / Installation

    UPVC Windows Replacement / Installation

    Window Fitters

    Windows and Doors

    Wooden Sash Windows Replacement / 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
  • Quote Accuracy100 out of 100
Write a review

250 Total Reviews

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

  • 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
  • 2 x casement windows

    10Verified Review

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

    Location: WD18
  • New windows and doors

    10Verified 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: WD24

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