Aluminium Casement Doors


The most traditional door style, hinged on the side and able to open inward or outward. With both single and double leaf options, aluminium casement doors are a versatile option for any entrance. 

Design and Aesthetic


  • 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.
  • For a standard-size casement door, the visible sightline (frame+vent) is between 100mm – 160mm. Large size casement doors are constructed with thicker profiles. 
  • Aluminium casement doors are constructed with visible butt hinges, or concealed hinges which cost higher. 
  • Aluminium  casement doors offer versatility in frame and vent 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.

Size Limitations


  • Standard single casement door measures up to 1000mm at width and 2300mm at height. The door vent may weigh up to 100kg. 
  • Large size vent measures up to 1.4m at width and 3 metres at height. The door vent may weigh up to 150kg.

Opening Options


  • Inward opening (single or double leaf)
  • Outward opening (single or double leaf)
  • Casement doors can be combined with side or top fixed lights.

Safety & Security Options


  • Aluminium casement doors usually come with standard multi-point locking systems which make them secure against unwanted entries.
  • Burglar resistance classes of RC2 or RC3 are also available as security options.
  • PAS24 security option for the doors to be installed on ground floors.
  • Restrictor can be used to stop the door opening past 90 degree and hold it in place for safety.

Thermal Performance


  • Aluminium casement doors are usually constructed with thermally-broken frames to achieve higher thermal performance. Higher thermal performance, indicated by lower Uw-value, is achieved with lower U-values of frame (Uf), glass (Ug), and spacer bars (PSIG). 
  • For replacement in existing residential buildings, aluminium casement doors must achieve a Uw-value of 1.4 W/m2K or lower to comply with Part L of Building Regulations. ( A minimum Door Energy Rating of Band C  is also acceptable for the glazed doors ( have more than 60% glazed area) or Band B for other doors for compliance.
  • For new residential buildings, glazed aluminium doors (with greater than 60% glazed area) must have a Uw-value of 1.2 W/m2K, opaque aluminium doors (with less than 30% glazed area) and semi-glazed steel doors (with 30% – 60% glazed area) must have a Uw-value of 1.0 W/m2K to comply with Part L of Building Regulations. (The maximum allowed value for all doors is 1.6 W/m2K for SAP calculations)

Product range


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Buyer’s Guide to Aluminium Casement Doors


Building Regulations for Doors

All doors installed in buildings must comply with the Building Regulations and meet the specified requirements:

  • Doors to be installed in new or existing buildings must meet energy efficiency requirements contained in Approved Document L.
  • In new residential buildings, easily accessible doors are required to meet the security requirements specified in Approved Document Q.
  • Doors must comply with ventilation requirements specified in Approved Document F.
  • Glazing in critical locations must meet the safety requirements specified in Approved Document K.