Aluminium Top-Hung Windows

Operated with a handle at the bottom, attached to the window frame at the top with hinges or friction stays, top-hung aluminium windows offer saved space inside, maximum daylight, enough ventilation, and easy operation. Also known as top-guided or awning windows, aluminium top-hung windows are suitable for any type of home.


  • Top-hung aluminium windows are constructed from thermally broken profiles as standard. 
  • They come with a variety of outer frames and sash profiles to meet   different size, design and aesthetic requirements.
  • Aluminium Top-hung aluminium windows are constructed from usually slim profiles. For a standard-size window, the visible sightline (frame+sash) is between 60mm – 100mm. Large size top-hung windows are constructed with thicker profiles. 
  • Aluminium tilt-turn windows can be constructed with visible butt hinges, or concealed friction stays which cost higher. 
  • Aluminium  top-hung windows offer versatility in frame and sash design, allowing for different sight lines and visual styles: standard, classic, steel-look, heritage style etc.
  • Different colour and finish options for profiles: standard powder coated, textured metallic finishes, anodizing finished, etc.

Maximum sizes

  • Standard sash sizes are up to 1.5m at height and 900mm at width. The sash may weigh up to 50kg. 
  • Large size sash sizes are up to 2m at height and 2mm at width. The sash may weigh up to 130kg.

Opening options

  • Top-guided: Constructed with friction stays, when it is opened the hinge slides towards the middle of the window. 
  • Top-guided reversible: It is constructed with friction stays and the window sash can be rotated by up to 170° to allow cleaning from the inside.
  • Top-hung: Constructed with standard butt hinges, and allows for large size top-hung windows.

Safety & Security Options

  • Aluminium top-hung windows usually come with standard multi-point locking systems.
  • Burglar resistance classes of RC2 or RC3 are also available as security options.
  • PAS24 security options for windows to be installed on ground floors.
  • Restrictor can be used to limit the amount of opening of the top-hung windows for safety.

Compliance with Building Regulations

Any windows to be installed at your property is subject to building regulations:

  • Windows to be installed on the ground floor of new buildings must have PAS24 securilty level. (Part Q, Read More >> )
  • Windows to be installed at your property must comply with Approved Document L in terms of thermal performance ( Read More >> )
  • Windows must comply trickle vent requirements specified in Approved Document F (Read More >>)


Since their affordability and versatility,  aluminium top-hung windows are commonly used in various residential buildings in the UK. They are used for a variety of purposes:

  • Top-hung windows are ideal solutions for the residential buildings that have little space to open windows horizontally. 
  • As they provide excellent ventilation while keeping rain out, top-hung windows are often used as ventilation windows placed over larger windows.
  • Top hung windows allow larger sizes than side-hung windows. So, they can be used in place of side-hung windows when your project requires large size outward opening windows.

Product range

Reynaers SL 68 Aluminium Window

Schüco AWS 70 SC Aluminium Windows

Buyer’s Guide to Aluminium Windows