subject: Material Options for the Sash and Framing of Double Glazed Windows [print this page] Material Options for the Sash and Framing of Double Glazed Windows
There are a variety of options on the market for double glazed windows, including the design, insulation features and material choices. Each factor will change the overall price and will also result in a different appearance. In some cases you will be matching the existing windows or trying to recreate a period look. In other instances this home improvement may be a chance to completely upgrade the look of your home and something fresh is in order.
The materials available on a window sash and a window frame make a major difference in the total price and appearance of the windows. You need to make a decision as to which option is best for your home.
What is a Window Sash and How Does It Relate to the Frame?
The glass panes of your window are held together by the window sash. The sash is then attached to the window frame to complete the product.
Typical Materials Used For Window Frames and Sashes
Both sashes and window frames come in a variety of materials. Some are natural, others are synthetic and some brands combine the two to take advantage of both types.
Wood is a common material used for both the double glazing windows and sashes. Solid timber has a high insulation value and good structural durability. It does require protection from the weather though, which makes wood a higher maintenance product.
Aluminium has been used for years in window sashes and frames. It is extremely durable, weather resistant and will not warp or twist. But the conductive qualities of this material require a design with additional thermal breaks that will provide effective insulation.
Fibreglass is another commonly seen material that provides good thermal protection and durability in any weather. Gaps in the frame and sash may be filled with foam for better insulation and the fibreglass can be manufactured in different colours to suit your home.
Some manufacturers combine these products to create double glazed window sashes and frames that offer the benefits of each type of material. Often timber frames and sashes are cladded with vinyl to take advantage of the solidity and insulation wood presents while providing a low maintenance alternative using the vinyl. Composite frames and sashes are also on the market now - created when the products are combined at an early stage (wood and plastic fibres together, for example).
Choosing a material for the frames and sashes on your double glazed windows is an important decision. Not only will this decide the look and performance of your windows, but it will also affect the price. Choose well according to your house design, preferred maintenance level and budget.
