Over time moisture corrodes stained glass causing the painted surfaces to deteriorate. Stained glass suffers the effects of condensation from inside the building and from pollution and the elements outside; the most effective way to protect stained glass is environmental isothermal protective glazing.
The original glass is taken out of its existing position within the window opening and new protective clear glazing following a proportion of the original lead lines, is set in its place. The stained glass is then framed in manganese bronze and secured in front of the new protective glazing, this provides ventilation between the glazing, stopping condensation occuring to prevent further corrosion of the glass and the breaking down of paint pigment.
Isothermal framed stained glass
Isothermal sectional diagram
