Selection and mixing of materials for internal and external plastering work

Tywi Centre



The use of lime plasters and renders is central to successful maintenance and repair of traditional buildings. An understanding of lime essential is to anyone working on historic buildings. With a wide range of lime products available on the market, this training course will provide a solid understanding of different types of lime. It will also cover the selection of appropriate aggregates as this is vital in determining the appearance and performance of lime plasters. This course will also help you to determine the appropriate mix of lime binders and additives and assessing the appropriate combination to suit the task. The course will include:

  • Understanding lime – lime science and the lime cycle, types of lime
  • Health and safety specific to lime
  • Additives – hair, pozzolans, mesh/ scrim
  • Aggregates
  • Analysis of mortars
  • Mixing methods
  • Application to different backgrounds- laths, stone, brick
  • Practical sessions


3 days

Who should attend?

This course is suitable for candidates who have completed NVQ2 in plastering or have equivalent experience of working within the plastering trade.

CITB Training standards and grants

This course is a CITB training standard. CITB registered companies may be eligible to apply for funding from CITB to cover the cost of this course and to receive a short course grant. For full details of available grants and funding please visit or speak with your CITB local adviser.

CITB GET code and grant tier

GET0536 - grant tier 2

Selection and mixing of materials for internal and external plastering work

Register interest for this course

Register interest for this course