After vandalism or accidental impact, the first priority is safety. The second is preserving information and original fragments that may influence repair, restoration and insurance documentation.
Secure the area without disturbing evidence
Keep people away from unstable glass and do not press loose pieces back into place. Fallen fragments may have painted detail, texture or color that is difficult to replace, so preserve them when it can be done safely.
- Restrict access
- Do not pull on loose lead
- Collect fragments only when safe
- Use clean containers and labels
Create a complete photo record
Photograph the full window, the impact area, fragments, the interior, exterior and surrounding frame. Wide views establish location and scale; close-ups show cracks, deformation and missing material.
Note the date, time, known cause and any temporary measures. This information supports the specialist’s review and may assist the property’s insurance process.
Use temporary protection carefully
Temporary weather protection should not add pressure to the stained glass or trap loose material. Permanent protective glazing should be designed only after the original window, frame, ventilation and drainage have been evaluated.