The aluminium in our systems is thermally broken. All of our systems are double glazed with low-E glass as standard, we have tested for water ingress and air permeability and are CE compliant. Increased thermal efficiency can be achieved by upgrading your glass choice (emissivity options of 1%, 3%, 5% and 10%) or to triple glazed units with Krypton gas, please ask for further details.
- A low U-value is useful during cold days when heating is needed. It is also helpful during hot days when it is important to keep the heat out.
- Thermally broken aluminium, and aluminium tracks reduce thermal loss through transfer
The thermal rating of a window or door is measured in U-Values, the lower the U-Value the better the rating.
Many companies will give you a U-Value based on the centre pane value or the U-Value of the glass (better than 'A' rated). This value will always be lower than the actual value of the complete window or door.
All our U-Value calculations are based on the whole door which is frame plus glass.