Water that has contacted concrete, mortar, stucco, stone, grout, or masonry-cleaning materials before flowing onto glass.
GlassRenu email archive — publication credit pending
Meaning and boundaries
Runoff is the carrier. The resulting glass condition may be removable residue, silicate deposit, alkaline attack, acid attack, metal staining, or a mixture.
Why it matters in glass restoration
Identifying the source and timing of runoff helps separate ongoing exposure from a one-time deposit and guides protection of adjacent materials.
Related terms
References
- National Glass Association — Construction Site Protection and Maintenance of Architectural Glass
Publisher’s original source - Vitro Architectural Glass — TD-107: Residue on Glass
Publisher’s original source - Pilkington / NSG Group — Glazing and Handling Guidelines
Publisher’s original source - U.S. General Services Administration — Cleaning historic masonry: Removal of atmospheric soiling, stains, and biological growth
Publisher’s original source