Main Information

SLCT Principal Trainer, Timeserved Stonemason, Stan Stenhouse
Charlestown Workshops, KY11 3EN
Start Time
9:30 a.m.
End Time
4:30 p.m.
£492.90 + VAT
(£591.48 incl VAT)

Technical Details

Individual Learning Accounts (ILA)
Requires C1 & C2?
Technical Level
Practical Level


This course provides confidence in the repair principles, materials and techniques for traditional masonry buildings, covering mortar manufacture, practical repair methods and techniques, and aftercare of lime based materials.

Aimed at building professionals who have completed 'P1 Traditional Masonry Repair', this 3 day workshop is tought through a programme of classroom and practical activities.

The course provides sufficient underpinning and practical knowledge of materials to enable effective development of specifications, supervision and snagging of the conservation works including repointing, stone indents, surface repair of stone, grouting, renders and harls and limewash.

Click here to download a PDF copy of the course description

Course Suitability

Attendees who have completed ‘Repairing Traditional Masonry P1 – Professional Level 1’

This course follows on from P1 course and is aimed at those who work with, own or are responsible for traditional buildings.

Suitable for building and heritage professionals such as architects, surveyors or planners. The course would also be of interest to homeowners, those responsible for maintenance works to buildings such as churches or those considering a renovation or conversion project.

We are always happy to help learners choose the right course. Please contact us if you would like to discuss which course is suitable for you.

Learning Outcomes:

  • Understanding of building conservation philosophy and best practice;
  • Development of repair strategies including consideration of their cost effectiveness;
  • Understanding traditional mortars, how to specify and replicate them;
  • Understanding advanced mortar manufacture;
  • Ability to understand considerations in relation to matching and specifying natural stone replacements;
  • Understanding of conditions where specification of surface repair of stone is suitable.

Topics include

Conservation Principles, Advanced Lime Technology and Science

  • Condition survey and recording of masonry;
  • Setting characteristics, pore structure and permeability issues of mortars;
  • Materials for repairs including sampling and analysis of mortars;
  • Gauged mixes, ‘hot’ lime mixes and gauged ‘hot’ lime mixes;
  • Specification and manufacture assessment process.

Principles and Techniques for Masonry Conservation

  • Obtrusive tile/stone repairs and stitching techniques;
  • Surface repairs to ashlar and profiled stone;
  • Renders & Harls - suction bonds, designing mortars and application of base coats;
  • Repointing ashlar masonry;
  • Second coats for mortar repairs;
  • Natural stone replacement including full and partial indents;
  • Manufacture of grouts and methods of grouting including hot mixed lime grouts.

Principles and Techniques for Masonry Conservation

  • Advanced surface repairs of stone including final coat mortars and replicating tooled surfaces;
  • Materials for consolidating delaminating stone;
  • Render & Harls – application of finish coats;
  • Lime wash and paint finishes.

Please note: The Scottish Lime Centre Trust reserves the right to withdraw or modify any course being offered. In the event of a programme being withdrawn, we will try to find suitable alternatives.

£492.90 + VAT
(£591.48 incl VAT)

Starting on: Sept. 10, 2024:

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