Openable Windows & Doors - Thermal Break

Outside view from windows & white chair

Thermal break solutions from Hemera Collection of Openable Aluminium Windows and Doors are designed to protect from outside elements, dust & noise

AluK Home Hemera collection of openable thermally broken aluminium windows and doors are best suited for tough tropical weather condition and also keeps noise and dust out of your home.

Energy efficient performance

The 56mm Hemera insulated windows are designed for all those applications where you want a robust and affordable window with an energy efficient thermal break as well.

Versatile design

Flexible and versatile, they give you the freedom to choose just the right style of energy saving window to suit your home perfectly. If you want a contemporary look, then the square profile is for you. If you’re looking for something more traditional, then we offer a rounded profile too. Either way, you’ll get slimline frames which make the most of the light and the view.

The range includes one, two or three sash casements – opening in or out, top and bottom hung windows, fanlight, pivot, and tilt and slide options. You can even have a 66mm sliding or patio door to match.

There are anodised and powder coated finishes available in a broad range of single and dual colour options and even special order high-performance finishes for polluted or coastal environments.

Protection from the elements

Both the Hemera Cold solution and the Hemera Thermal break solution windows are guaranteed to keep out noise, dust and the very worst tropical weather.

  • System Features – Robustness, modern, aesthetic, high performance
  • Thermal Break Solution – Yes
  • Frame Depth – 45 mm, 56 mm
  • Maximum Sash Weight – 130 Kg
  • Glazing Thickness – 5 mm to 40 mm
  • Dual Colour Option – Yes
  • Lock – Cremone handle
  • Lock with Key – Yes
  • Multipoint Lock – Yes
  • Hurricane Barrier – Yes
  • Flyscreen Option – Independent


To ensure maximum efficiency thermal efficiency, AluK Home Hemera's collection of Thermally broken openable aluminium windows and doors have a wide range of features to provide total versatility in design. They are designed to provide outstanding protection against external agents, such as noise, pollution, and tropical weather. They are optimally designed window and door system recognized for its high acoustic and weather performances, making it the ideal solution for exterior joinery in tropical and hot climates.

Technical data
U value W/m²K 2.6 to 3.9
Acoustic performance (dB) 46
Air tightness (Pa) 600
Water tightness (Pa) 1200
Wind load (Pa) 2000 to 2400

All in the details

Cleaning & Maintenance of Aluminium Windows and Doors

All you need to do to keep your windows and doors looking their very best is to wash them down a few times a year to get rid of any dirt or dust. That’s all there is to it. They don’t crack or fade in the sun and there’s no scrubbing or painting required – leaving you more time to relax and enjoy your view.

Why should you choose aluminium for your windows and doors?

Aluminium is regarded as one of the best materials when it comes to durability, aesthetics and security of windows and doors. Aluminium is also strong and lightweight which gives it a distinct advantage for large expanses of glass to bring the outside in. Let's look at the importance of choosing aluminium as a material for your windows and doors.