One of the most important reasons customers seek new windows is to improve sound insulation as well as thermal efficiency. At London Box Sash Windows we know that the glass used in our windows plays one of the most important roles of all. That’s why we glaze our premium casement windows with the highest ‘A’ rated double-glazed units, which exceed latest building regulation requirements.
The windows are glazed with 24mm double-glazed units, comprising of low ‘E’ glass, argon filled ‘Swisspacer’ bar and Pilkington Optiwhite extra clear, low iron glass, which provides an indicative center pane U-Value of 1.2 W/m2K.
To protect and prolong the life of our double-glazed units we have designed a unique drained and vented rebate glazing system to prevent premature failure of glazing unit seals by allowing any trapped moisture to drain through small, concealed drainage holes. Such a development has enabled us to double our guarantee against premature failure.
Our casement window range can also incorporate a variety of other glass options to suit specific requirements:
- Toughened glass or laminated glass
- Acoustic glass – Double-glazed units can incorporate acoustic insulating 6.8mm laminated glass (35db Rw). This product combines two sheets of clear glass bonded together with a totally transparent interlayer. The interlayer absorbs sound and reduces the level transmitted through the glass, helping to keep noise in or out
- Obscured or textured glass
- Stained glass