Retro glazing older character homes usually involves removing existing glass and sometimes character features such as astragals and lead-light windows. The EVS Triple Retro glazing system simply adds a double glazed panel to the outside which allows the original glass and character features to remain. This saves time and delivers higher performance insulation and protection.
EVS has developed this unique system to ensure any trapped moisture can be released and not build up between the panels and cause fogging. The process is called thermal pumping that uses the cycle of warm and cold to breath in cool dry air and expel warm moist air and promote a dry cavity between the existing glass and new glass panel. The panel is clipped to the surface of the existing timber sash and is sealed and painted so that it integrates into the style of the existing joinery. It is recommended that opening panels are also fitted with EVS Draught Stop to achieve the best performance result.
EVS has developed a number of solutions for triple glazing Double Hung windows from awning opening to traditional weighted window slide opening panels. They are a more complex window system and require more work compared to fitting standard casement style windows. The biggest consideration is preserving the original character while delivering the highest performance. It is recommended that a window set only needs one or two opening panels to reduce draughts and cost. The windows are also given a health check and repaired where rot has been discovered to ensure that window provides ongoing service.
Find out more Triple Glazing Solutions
-Double Hung windows
-Curved Shaped windows
-Direct Glazed Windows
You can download your copy of the EVS Triple Glazing Brochure for all the information about how Triple Glazing can improve your home
BRANZ (Building Research Association of New Zealand) has been working on completing a Thermal Modelling report to show the R-Value (Insulation Value) of the standard configurations of the EVS Triple Glazing system. (Click on the buttons above for more information)
The low insulation value of (R0.19) on single glazed panels causes heat loss and condensation in poorly vented rooms. Upgrading with retro glazing will improve your single glazed window.
The EVS Triple Retro Glazing fitted with standard glazing (R0.45) still has a high insulation value compared to Aluminum double glazing (R0.26). It is ideal for allowing the sun to warm your home.
EVS Triple Retro glazing fitted with Low-E argon panels takes out first place (R0.59) for a retro fitted window solutions. The Low-E provides higher insulation against heat loss as well as heat gain.