Expansion Spacing by Jana L | Mar 1, 2022 | Glossary of Terms, Glossary of Terms -E, Uncategorized | 0 comments The amount of space left at the baseboard to allow for expansion. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.