- Remove dust or loose dirt with a dry, soft cloth. Clean any debris off the window sill. In some cases, this gentle cleaning is all that is required to restore a piece of antique stained glass to its best.
- Lay a few paper towels or a cloth on the window sill to catch any drips.
- Mix a few drops of neutral soap into a bucket of distilled water. A neutral soap is pH balanced and contains no vinegar, ammonia or abrasives. The experts at HowtoCleanThings.com recommend using Seventh Generation natural dish soap or a comparable product for cleaning antique stained glass windows.
- Wring a soft, clean cloth in the soapy water so that it is just damp. Wash one section of the window at a time. Rinse out the cloth and change the water as often as needed so that you are always cleaning with clean materials.
- Use a cotton swab dipped in the soapy water to get into tight crevasses.
- Dry the section with a clean cloth when you have finished cleaning it. Repeat until the entire antique window is clean.
Things You Will Need
- Dust cloth
- Paper towels
- Distilled water
- Lint-free cloth
- pH-balanced dish soap
- Cotton swabs
- Use gentle pressure when cleaning to prevent damaging lead lines or glass that may have hairline cracks.