In damp or wet weather conditions, new lead can on occasion develop an uneven powdery white, non-adherent coating of carbonate. This can be washed off by rainfall and cause staining on materials below. To counteract this, Calder developed patination oil to prevent this from occurring.
In damp or wet weather conditions, new lead can on occasion develop an uneven powdery white, non-adherent coating of carbonate. This can be washed off by rainfall and cause staining on materials below. To counteract this, Calder developed patination oil to prevent this from occurring.