Vapor retarders, vapor barriers, waterproofing - there are differences between the three materials and why they are used under slabs on grade. This month's article addresses those differences and focuses on the use and proper installation of vapor retarders.
Visit our website at https://www.conspectusinc.com/publications.htm to view or download A1030‑Slab on Grade Vapor Retarders 10.01.01. We invite your comments and questions about the article here.
David Stutzman