Harp Windows Ltd
Watford, Hertfordshire
Checkatrade member since February 201410
Public liability insurance is unverified
Services
- Conservatory Installation
- Windows and Doors
- Window Fitters
- Patio Doors Installation
- Wooden Sash Windows Installation
- Exterior Doors Installation
- Bifold Doors Installation
- Aluminium Windows Installation
- French Doors Installation
- UPVC Windows Installation
- Composite Front Doors Installation
- Bay Windows Installation
- Stable Doors
- Double Glazing Installation
- Aluminium Doors Installation
- UPVC Doors Installation
Customer Reviews
Write a review10 /10
Based on 4 reviews over the past 12 months
Quality of work
10
Reliability
10
Communication
10
Reviews (253)
10 Would highly recommend Harp Windows.
Posted 29 April
The whole process from pricing up our replacement windows & the visit to the showroom went smoothly. Andy and Bogdan worked very hard, with great attention to detail. They both seem very proud of their work and so they should be. They respected our property and cleaned everything away.Verified reviewerJob location: WD2410 A well oiled machine delivering outstanding quality.
Posted 05 March
This project was one of the biggest we have undertaken with Harp and Evolution Windows; it delivered results beyond our expectations. The Harp process was professional and very much like a well-oiled machine. From the site survey onwards, it became clear that the level of technical knowledge, capability and experience was in abundance. The experience got even better at the installation phase when their team effortlessly undertook the removal of windows and installed new ones. Nothing was left to chance; the attention to detail and the quality of the work were exceptional.Verified reviewerJob location: SG4- PPaul W
10 Replacement sash windows
Posted 25 November 2025
Fantastic job from start to finish. Replace 6 sash windows and install new kitchen window. Fabulous job by the 2 fitters and looks great. Highly recommended.Verified reviewerJob location: WD23 10 Patio door replacement
Posted 21 May 2025
Great professional service from initial enquiry up to installation. Ewa, Nicky, Gary, John, Bogdan and Tom were great.Verified reviewerJob location: HA8Response from Harp Windows Ltd
Thank you for your great feedback, we really appreciate this. Please don't hesitate to get in touch again if we can be of any further assistance to you.
10 Excellent service and quality work
Posted 30 December 2024
Writing this review 3 years after installation - still very happy with the standard uPVC windows. I can't speak highly enough of Amy, John and the installation team. Excellent communication - they patiently answered all of the questions. Punctual for the quotation appointment and installation - they are very experienced and knowledgeable. Harp Windows removed aluminium windows and the remnants of the bay window bits and replaced with uPVC. They exceeded expectations - they replaced the window ledge with wood, not pvc, as others quoted. Condensation black wall marks - a thing of the past.Verified reviewerJob location: HA210 Fit new UPVC back door.
Posted 09 November 2024
Overall very good. Apparently I would have been better off ordering a new window at the same time, but in the event the installers worked around this shortcoming in a very professional manner and with great attention to detail.Verified reviewerJob location: WD25
Photos
Company Info
Owner
Mr Gary Hays
Ltd Company
12 years on Checkatrade
VAT Registered
Yes: 541124291
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.