Aluminium Conservatories and Glass Rooms

View our collection of aluminium conservatories.

Our Partners


SMART Systems are a popular choice for the domestic market with a reputation for product innovation, design and technical competence. Alumen offers the SMART Visofold 1000 bifold door and Visoglide sliding door systems, along with the Alitherm window and door range. We also offer commercial doors and vertical sliding windows from the SMART range.


Schuco is a world class leader in energy efficient technology, and Alumen is privileged to be one of only a select number of UK fabricators in the UK able to offer the Schuco range of bifolding and sliding doors. With ingenious features such as adjustable jambs and ultra slim sightlines, the Schuco ASS70FD is a best seller. We also offer the Schuco range of sliding doors, and the industry leading CMC50 aluminium roofing system.

About Us

Alumen Ltd is the specialist aluminium window and door sister company to long-established GRP Designs. Through investment in machinery and highly skilled staff, Alumen has a solution for all your aluminium doors and windows needs.

Choose Alumen for your high end, quality manufactured aluminium products and you’ll get:

  • A specialist manufacturer
  • A choice of quality systems
  • Added value with expert advice
  • Short lead times
  • Choice of supply only or full installation service
Schuco Windows and Doors Smart Architectural Aluminium GRP Designs Ltd