1. to make a building or structure resistant to cold weather by adding insulation, sealing gaps, or making other modifications
Usage: primarily used in American English

Examples

• The city offers grants to help homeowners weatherize their houses before winter.
• We need to weatherize the attic by adding more insulation.
• The contractor will weatherize all the windows and doors.
• Many utility companies provide free energy audits to help customers weatherize their homes.
• They decided to weatherize the basement to reduce heating costs.
• The weatherization program helped low-income families prepare for winter.