Lead deposits and dulling
Natural silver lead is a raw metal alloy that will oxidize when it comes into contact with the atmosphere. The initial mirror finish gradually dulls down to form a natural grey patina. During this process, the lead may look discoloured with various colours appearing on the surface. Excess rainfall can cause spotting or white powdery deposits to form. This is normal.
The deposits can be wiped away but avoid polishing as this will mean the process will start again! Eventually the dull grey patina will develop. The time this will take is variable and dependant on weather, location, and other atmospheric conditions local to the installation.
Please be relaxed should you experience this phenomenon, as we have over 35-years history of lead design work; all lead develops to the same desired end result but at different speeds.
Read more about lead oxidisation in our download here: Lead Oxidation PDF