Lead light glass adds a whole lot of character to homes and it certainly reflects the period for design of buildings. The unfortunate thing about lead light is that it is terribly inefficient because of the heat loss through the lead and solder joints. If you have ever put your hand on a metal cooking pot you will know about how cold metal objects can be compared to better insulated materials like wood.
Finding a solution for improved thermal performance on leadlight has posed a challenge to home owners. Some retrofit solutions used now place glass behind (on the inside of the sash) or try to encase the lead light pane into a double glazed unit.
These are really half baked solutions and present limitations and real future risks such as moisture build up.
So what is the solution?
Glavenir vacuum double glazing is only 6.1 mm thick and can be placed in front of the lead light pane into the original wooden sashes.
The advantages are:
- No moisture build up
- The leadlight is not exposed to the outside elements (wind and rain) so it will not deteriorate at the solder joints or warp in the wind. It’s also protected from accidental breakage (e.g. the footy!), vandalism or break in attempts.
- Triple glazed thermal performance will be achieved – so comfort and energy efficiency will be the best available.
- The view of the lead light from the outside is clear.
Tip – A lead light glazier should be involved in removing the original lead light and making any repairs and then glazing in the Glavenir followed by the restored lead light. They will last another 100 years plus! Our recommended installer for this solution in Victoria is Wes at Glass Crafts Man and our recommended installer for Tasmania is Gavin at Original stained glass
Below is a photo of a home that has had Glavenir installed into the top sashes by Wes and the lead light sits behind. A wonderful outcome.
