Glass and glazing
Glass that insulates. Glass that generates.
A sealed vacuum between two tempered panes stops heat the way a flask does. Add a photovoltaic layer and the same pane produces electricity. SBL supplies and installs both, with the frames and facades around them.
How the glass is built
- 01
One sealed unit
Two tempered panes, about 10 mm in all, made as a single piece.
- 02
The air is taken out
The gap is pumped down to a vacuum. With no gas left, heat has nothing to travel through.
- 03
Pillars hold the gap
A grid of small support pillars keeps the panes apart against the pressure of the air outside.
- 04
Sealed and coated
A sealed edge holds the vacuum for the life of the unit. A Low-E coating turns radiant heat back.
- 05
Add cells, and it generates
Put photovoltaic cells on the outer pane and the same unit produces electricity. Without them, it insulates only.
Three families
Choose by what the opening has to do.

Photovoltaic vacuum glazing
One pane that insulates the building and produces electricity. For facades, skylights and canopies.
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Vacuum glazing
About a fifth of the thickness and half the weight of triple glazing, losing less heat.
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Windows, doors and curtain wall
Thermal break aluminium frames built around the vacuum pane, measured and installed by SBL.
ExploreBuilt for this climate
Move the sun. Watch where the heat goes.
In this climate the glass is where a building takes in most of its heat. Drag the sun through the day and compare an ordinary pane with a vacuum pane.
Ordinary glass lets heat straight through. In vacuum glazing there is no gas to conduct or circulate it, and the Low-E coating turns radiant heat back toward the outside.
One distinction
Plain vacuum glazing insulates but does not generate. Only the photovoltaic family generates electricity.
SYNERGY SBL photovoltaic vacuum glazingHold the glass before you specify it.
Samples, manufacturer documents and test reports for vacuum glazing and photovoltaic vacuum glazing, on request.


