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We offer an extensive range of windows manufactured specifically for your home in a choice of hard wearing PVC-U or aluminium. Our extensive range of frame styles can be fitted with a range of glazing options – including double glazing, triple glazing, feature leading, patterned, stained, leaded and coloured glass. Whether you have historic, traditional or contemporary style house, we can design and manufacture frames that suit the architecture of your home. All our window products and installations are covered by a comprehensive 10 year guarantee.

Our range includes:


As we manufacture in-house we are able to produce bespoke designs with any combination of fixed and open panes. All our PVC-U and aluminium windows are offered a wide range of colours and finishes.

Alpen windows are designed and manufactured with high security features and locks to ensure that your home and family are kept safe and secure. Using strong long lasting and easy to clean materials we are able to supply and install stylish windows that will give many years of trouble-free performance. In fact we are so confident that our windows are amongst the best available to homeowners that we guarantee all our window products and our installations for 10 years.

Please take time to look through our window gallery – we are sure it will inspire you. And if you can’t see a style to suit your home please get in touch because we can design and manufacture windows tailored and created just for your home.

PVC-U framed windows

As manufacturers we are able to offer a wide range PVC-U window systems suitable for every type of new-build or upgrade/replacement project. Whether you are a homeowner looking to upgrade your windows or an architect looking to specify high-performance, energy-efficient windows for a project, we can design, manufacture and install windows to suit your exact requirements.

We manufacture double glazed and triple glazed windows in our factory in Luton and can install to homeowners across Bedfordshire and in Milton Keynes, Bedford, St Albans, Harpenden, Hitchin, Welwyn Garden City and Stevenage.

The contemporary styling of our PVC-U windows features a slimmer frame, giving sleek unobtrusive appearance and maximising the area of glass in your windows. With a choice of a profiles Alpen windows look great whether you live in a chic minimal home or a traditional Victoria cottage.

Our soft sculptured bevels are a popular choice with homeowners and for a contemporary feel we can also supply a chamfered straight edge profile. The aesthetics of your window can be enhanced to match the architecture style of your home with a range of stylish accessories. Georgian bars, horn sashes and arch-top inserts can help you to create an individual look that perfectly complements your property.


All our PVC-U windows can  be finished in a choice of colours from – traditional which to our heritage range. Some colours can also have a wood grain finish. As all our frames are supplied by one product manufacturer we can ensure consistency in colour (this also includes a colour match to our PVC-U doors).

Our grey, golden oak and rosewood frames can even be supplied with white on the internal frame surfaces.


Other colours are available by special order, giving you unlimited scope to create the window style of your choice. For complete peace of mind we provide 10 year guarantee on all PVC-U windows. To ensure optimal performance of our PVC-U range of windows our energy efficient multi-chamber frames coupled with a choice of glazing options, allows us to offer a C to A Star rated energy rated performance all of which are fully building regulation compliant. Our slim profile frames also maximize glazing areas which enables  more sunlight and solar heat in than older windows.

Aluminium framed windows

We offer a range of aluminium frame windows which are the perfect solution to achieve that stunning contemporary look. Carefully designed and engineered, they created a sleek profile for a really minimal, modern look without compromising the frame strength. Many homeowners and architects specify aluminium because it’s stronger than most other materials,  is low maintenance, won’t rot or warp and is designed to give many years of trouble-free performance.

Our aluminium window range also benefit from high specification thermal and sound installation properties to help create a cosy environment inside your home.

Our aluminium windows frames can be finished in a range of RAL colour coatings which allows homeowners and architects to create a unique look.

Standard colour range

We can coat our aluminium frames in any RAL colour, but non-standard colours items can take longer. For complete peace of mind we provide a 10 year guarantee on all aluminium windows.


For technical reasons associated with colour reproduction, the colours shown give only an indication of shade. No guarantee can be given that they will exactly match the powder product. Colour references shown in this chart are not suitable for matching with product supplied elsewhere.



To ensure optimal performance of our aluminium range of windows our energy efficient multi-chamber frames and choice of glazing options allows us to offer for C to A Star rated energy rated performance which are fully building regulation compliant. Our slim profile frames also maximize glazing areas which enables more sunlight and solar heat to come in than older windows.



Aluminium profile section – available with internal beading.

To find out more able Alpen’s range of classic style, heritage and contemporary window designs please call us on 01582 591505  or request a call back.

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