New window glass: get the cleaning instructions before the final cleanup

Questions covered in this guide

Identify who performs the first cleanup

Ask whether the installer removes labels and construction residue, cleans the glass and leaves the surrounding finishes ready to use. Record which company owns that task when several trades are working nearby. Keep the product identifiers available so the cleaner can use the instructions for the actual windows rather than a general routine from another job.

Use the maker’s material-specific directions

Pella warns against scraping glass with a razor blade. Its cleaning guidance also cautions against abrasive products. Request the current care instructions for your selected glass, coatings, frame and hardware. Ask the supplier how unusual residue should be handled before anyone attempts to remove it. A method suitable for one surface may not be suitable for an adjacent finish, so keep the instructions together.

Make a safe-access care plan

Use rows for interior glass, exterior glass, screens, tracks or hardware, and surrounding trim. Record the approved products, access method and responsible person for each task. For high or awkward openings, arrange appropriate professional access rather than assuming a homeowner can lean out or climb to reach them. Ask what should be reported before cleaning, such as a scratch or damaged seal, and photograph an existing concern. Keep construction residue removal separate from ordinary maintenance so a difficult stain is not treated as routine owner work.

Finish with a documented handoff

Confirm that the agreed cleanup is complete and retain the instructions with the warranty and opening list. Ask how to request help if the product is marked or an unfamiliar coating is damaged. Include any separately quoted professional cleaning or access in your ownership planning. The window calculator covers a supported replacement budget; it does not establish a universal care method or price future maintenance visits.

Sources and supported claims

Pella warns against scraping glass with a razor blade.
Source ↗ · national · Checked 2026-10-12

Its cleaning guidance also cautions against abrasive products.
Source ↗ · national · Checked 2026-10-12