Are your windows draughty and losing heat?
Reports show that up to 10% of home heat is lost through your windows. Installing secondary glazing adds an extra barrier to reduce heat loss.
As secondary glazing is often fitted with a 50mm – 200mm cavity from the primary window, the air-filled draught proof cavity acts as an insulator. The creation of an insulating layer of air is as important to the retention of energy as the fitment and seals. With the right glass, the result can be a reduction in heat loss by as much as 65 percent.
For thermal insulation, low-E glass is often the best choice because the glazing has been designed and engineered to provide:
• An additional ‘heat bounce’ glazed barrier
• Improved energy conservation
• Discreet slimline installation
• An environmentally friendly solution
Glass of choice
Low-E glass has a transparent coating that has been specifically designed to reflect heat back into the room, reducing heat loss through the window and improving energy efficiency.
Test results highlighted that a timber window has a U Value of around 4.7 W/m2K, and a good modern PVC double glazed window will have a value of around 1.4 W/m2K. A sealed secondary glazed unit can yield a lower U Value of 0.97 W/m2K. This indicates that Secondary Glazing will achieve better heat performance than traditional double and triple glazing.
What is a U-value?
U-values measure how effective a material is as an insulator. U-values are a measure of the rate of transfer of heat through a material. The lower the U-value the better the material is at retaining heat. The installation of secondary glazing acts as an insulator barrier and can reduce heat loss through the window by up to 65%.
The installation of secondary glazing from Secondary Glazing NI will:
• Reduce heat loss
• Minimise draughts
• Reduces energy bills
• Decrease noise levels.
• Enhance a buildings security
