Aluminium Doors & Windows for Builders / Developers

Our high-quality aluminium framed glazing systems give
the ultimate illusion of merging inside and out.

Glazing Packages for Builder/Developers

Sieger® Aluminium offer a comprehensive range of aluminium windows and door systems suitable for any type or scale of project. Each system is meticulously engineered to meet even the most demanding of site conditions and requirements. Many of our products are available as supply only products directly from our factory. Alternatively our professional contract and installation team can manage the installation for you. 

By using products from Sieger® aluminium on your project you can be sure you are receiving the very best in both quality and design. Our aluminium windows and doors cover a range of budgets so you can ensure your project not only looks great, but is delivered within budget. 

With a high tech fabrication factory we can offer impressive and efficient lead times with bespoke details, finishes and ironmongery options. To receive a quote for your aluminium window and door package simply get in touch with a member of the team who will be happy to help.



Jack Bedington

“We always recommend Sieger products for our projects. Quality is always good and delivery is to schedule. With a range that includes windows, bifolds, roof glazing and sliders we can get everything from one source with one delivery and installation date.” 

5 Star

Become a Sieger Partner

For builders and developers, becoming a Sieger glazing partner means you can incorporate our high-quality, award-winning aluminium glazing systems into your own projects. Our streamlined manufacturing process and outstanding customer service ensure a pleasant and efficient process. 

If you are a modular building company with set building designs for clients to choose from becoming a Sieger glazing partner allows us to keep your designs on file making it extremely easy for you to place your orders.

There are many glazing suppliers who sell pre-made, off the shelf stocked glazing systems. At Sieger, each window, door and rooflight is designed completely bespoke for your project. This includes size, glazing specification, frame finish and ironmongery.

For more information visit our Supply Only Page where you can find more information along with our FAQ’s!



Visit our Showroom

The Sky House Design Centre

We are here to help. Contact us for Quotations, Technical Information, General Information and more.


Our factory is fully open for fabrication and supply only orders.  

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