Aluminium Bifold Doors

Aluminium Bifold Doors

Aluminium Bifold doors from Costello Windows are strong and reliable. The finish is a powder coat finish that is designed to withstand the elements. Excellent sealing means these doors are sealed to wind and rain. Through clever design a single sash of the Bifold door will operate as an ordinary door, for easy in and out access.

Costello Windows

Kitchen To The Garden

Thermally efficient aluminium Bi-Fold doors are very strong, perfect for double or triple glaze options. The perfect setting for aluminium bi-fold doors is between your kitchen and back garden. Think of these doors that offer an unmatched view but also a glass wall that simple glides to the side at the push of the door handle to open up your kitchen to the outside world. 

Sets of 3, 4 or 5 Sashes

They will transform and modernize and add real value to any home. Your home will be lighter and brighter. They come in sets of 3, 4 or 5 sashes. They are designed to function well and look beautiful. The doors are incredibly easy and smooth to operate and need little maintenance.

Aluminium Bifold Door Features

Glass wall that glides at the push of a door handle

Comes in sets of 4, 5 and 6 leaves

Transform, modernise and add real value to any home

Contemporary and stylish in a powder coated finish

Available in any RAL colour

Thermal break stops heat loss through material

Low maintenance, easy clean material

Stainless steel hinges and locks

Multi-point locking system as standard

Thermal Insulation
U-Value 1.0 W/(m²K) to U-Value 1.5 W/(m²K)

Thermal Insulation
Double & Triple Glaze

Air Permeability
Class 4 600 PA

Technical Details

Class A4 E900 900 Pa

Wind Resistance
Class A4 P3 2400

28 mm units with 4 mm window pane thickness

Door Colour Options

Anthracite Grey
Silver Grey
Agate Grey
Basalt Grey
Light Cream
Chartwell Green
Golden Oak
Dark Green

Handle Colour Options

Please Note

  • Image colour may vary slightly to end product
  • Standard Interior colours are white and light cream
  • All colours have a woodgrain effect except white