Lime Mortar Types Explained – Essential Knowledge for Older UK Buildings

11/06/2025 26 min

Listen "Lime Mortar Types Explained – Essential Knowledge for Older UK Buildings"

Episode Synopsis

In this episode of Talking Conservation, we explain the different types of lime used in building and restoration work. If you have ever wondered what the difference is between air lime, natural hydraulic lime (NHL), pozzolans, or hybrid lime mixes, this video will give you a clear introduction.Understanding the types of lime is essential before starting any work on older or historic buildings. Whether you are a homeowner, builder, surveyor or anyone dealing with traditional construction, choosing the right lime can make a big difference to the long-term condition of the building.We cover: What air lime is and how it worksHow pozzolans change lime chemistry and performanceWhat makes a lime hydraulic and how NHLs are classifiedThe role of hybrid mixes, including hot lime and insulating lime plastersThe importance of matching materials to traditional buildingsThis is the second video in our lime series. In the next episode, we will discuss how to select and apply the correct lime type for specific jobs including pointing, rendering, plastering and flooring.👉 Subscribe to our channel for future episodes on building conservation, heritage homes, and expert advice.👉 Book a consultation with us for 1-1 advice on managing your historic home on www.expertible.com👉 Professionals involved in working on or with historic, traditional, or listed buildings may want 1-2-1 mentoring and/or training with Stephen. Visit his website at www.beconservation.com

More episodes of the podcast Talking Conservation