Our Company | Altegra

Our Company

Dunstall Holdings Green Logo

The Dunstall Holdings Group contains two business streams that are involved in agricultural and industrial applications. Operating from 7 different locations in the UK with turnover of over £100m and over 270 team members the Dunstall Holdings Group strives to exceed customer expectations by consistently delivering products and services to the highest standard.

Who exactly are we?

Altegra combines the benefits and experience of a number of individual areas of business expertise all held under one brand. We provide national coverage for all of our products and services.

What makes us different is our ability to integrate all elements of the ideal solution into a bespoke package, designed exactly around your specific needs.

By combining all of your needs into one package, we offer cost effective proposals (especially when compared to ordering everything separately) and you can be assured that our solution will deliver your brief and incorporate equipment designed to meet your requirements exactly.


Our group values


Committed to consistently delivering the best service for both employees and customers


A unified collaborative effort to achieve a mutually beneficial outcome.


We create a positive environment where energy and enthusiasm are matched by opportunity and ambition.

Group investment in Altegra Window & Door Systems

Over the past year, Altegra Window & Door Systems have invested heavily in the production process and machinery to automate and streamline the manufacturing lines, enabling us to provide faster reliable turnaround times, higher quality product finishes and simplify product manufacturing.

With these investments, it has made it possible for us to expand our product offering to include the manufacture of curtain walling systems, shopfront systems and increased ranges of aluminium windows and doors for both the trade and commercial sectors.

At Altegra,  we want to ensure a smooth and hassle free ordering process for all of our clients. Place an order with us and we will personally deliver your goods to a specified location on an agreed date. We have chosen to look after our own deliveries to reduce delays from third-party couriers. Altegra have a host of vehicles to cater for any sized delivery.

Machinery is only one part of our investment, we have also expanded our shop floor and manufacturing space by 130%.

Within the near future, we will be looking to host a dedicated area to share the different profiles, window and door types, alongside other materials inside of our new building. This gives us the ability to offer a show-room like experience where any customer can book an appointment, visit our show-room area and learn more about our product offering.


Enquire for your free no-obligation quotation

Contact Altegra Window & Door Systems today to set up a free trade account for all aluminium window and door systems.