The Natural Building Centre

Y Ganolfan Adeiladu Naturiol.

Course now full

Working with Hot Mixed Mortars – Current thinking and best practice. -

One-day seminar - 16th February 2018 | £85.00 per person

Please contact us directly if you would like to be put on a the waiting list of any places become available.

Location: The Natural Building Centre Ltd, Llanrwst, Conwy. LL26 0PU

A fantastic opportunity to hear three of the leading experts speak about traditional hot-mixed mortars, with plenty of time for questions and discussion, and practical sessions in the afternoon. Suitable for those who have a keen interest in specifying and using the most appropriate building limes, for the repair of traditional buildings.

Some key questions answered...

  • How to mix safely.
  • Different pozzolanic additives.
  • Why are NHL’s less breathable?
  • Should hot mixes be used hot?
  • How to mix in bulk.
  • Shrinkage and aftercare.
  • Health and safety.
  • Comparisons with NHL and premixed mortars.
  • Mix ratios.
  • Performance and durability.
  • Cost.


Morning session – 9.30 – 12.30

  • Nigel Copsey, Conservator and Stonemason – Old Texts, Traditional Mortars, Modern Practice.
  • David Wiggins, Structural Engineer, Curtins - The Functional Behavior of Traditional Lime Mortar.
  • Alison Henry, Senior Architectural Conservator, Historic England - Lime mortars: Current Perspectives

Afternoon Session 1.30 – 5.00pm

Practical demonstrations showing different methods of mixing hot lime mortars, plasters and limewashes, with the opportunity to have a go at applying different mixes.

Lunch and refreshments will be provided. Please book early as we anticipate this event booking up quickly.

Download English Course Flyer Download Welsh Course Flyer