Call us now on 0151 342 2266 or  

Welcome to John Knight Glass

We have been manufacturing and installing quality PvcU, timber and aluminium windows, doors and conservatories throughout the North West since 1984.

Through our national and international partnerships with companies such as Internorm, Evolution, Rationel, Centor Europe and PanoramAH, we can offer the best available products to homes and businesses throughout the North West of England and the wider UK.

Our Heswall showroom contains a wide selection of our product ranges for you to browse through and try out. In our showroom we have working installation examples of our bespoke premium products as well as our cost effective but still excellent quality budget ranges.

To meet the increasing demand for orangerys and glass living rooms we have introduced a full range of atriums, rooflights and patent glazing systems.  These are available not only in PvcU and Aluminium but also in timber with aluminium over capping.

We offer a full in house design service and our team work closely with many home and business owners to design and complete projects. If preferred we can also work directly with your existing Architect or Builder.

This bespoke service and our extensive product range enable us to provide a one-stop-shop to meet all your needs.


We are available via phone Monday to Friday on 0151 342 2266 for advice, information, quotations and queries.  Alternatively you may wish to request a call back using our online form and we'll call you.


A Grand Design Wirral

Take a look at our Alu-clad timber Rationel window and door installation as featured on the popular Channel 4 program Grand Designs.

See the full case Study by clicking the link below:

Rationel Installation, Wirral

Find out more information about us

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Our Showroom

Come and try our products in person
at our large Heswall showroom

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Energy Efficiency

Find out about our energy efficient
products and the latest technology

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We are proud to go the extra
mile for all of our clients