weatherstripping
/ˈwɛðərˌstrɪpɪŋ/
noun
- Material used to seal gaps around doors and windows to block drafts, moisture, and dust; also the process of installing such material.
- We bought foam weatherstripping to seal the gaps in the old window frames.
- Proper weatherstripping can improve your home's energy efficiency significantly.
- The weatherstripping around the back door was worn out and let in a lot of cold air.