Introductions and a short presentation showing some examples of plasters and renders and the principles that underpin their use and repair
Introduction to plasters and renders: an overview of the wide range of materials and methods of application used for rendering and plastering in the past, from earthen plaster to early cement stucco
History of plastering
Identification and description of mouldings and enrichments: examples of mouldings and demonstration of how the mould is made and used
Applying base coat plaster to moulding
Preparation of lath panel; applying first coat of plaster to lath; setting up and running the mould in situ
Deterioration of external renderings and walls and ceiling plasters, symptoms and cause
Introduction to and preparation of non-hydraulic lime plasters including hot lime; use of hair and synthetic fibres. Mixing different mixes incorporating different binders, additives, etc.
Setting up and running the mould (finish coat)
Placing external plaster on rubble walls; wall preparation; placing techniques; single and multiple coat; opportunity for participants to apply single coat render using different mixes
Case studies of plasters and renders - failures and application. Introduction to cob and earth plasters
Plaster and render conservation techniques; supporting, grouting, pinning and filling
Applying finish coat; fresco techniques; repairs to decayed plaster
The role of plaster analysis; techniques of sampling and study; uses and limitations.
Specifications for plaster and renders.
Review, discussion, questions and summary.
15.30 Issue of certificates and depart.
Arrival Day - this is the first date listed above
Courses start early evening. Residential students to arrive from 4pm, non-residential students to arrive by 6.45pm.
6.45pm: Welcome, followed by dinner (included).
8 - 9pm: First teaching session, attendance is essential.
Classes 9.15 - 5pm, lunch is included.
From 6.30pm: Dinner (included for residential students).
Evening working - students may have access to workshops, but only with their tutor's permission and provided any health and safety guidelines are observed.
Classes 9.15am - 3pm, lunch is included.
Residential students are to vacate their rooms by 10am please.
(This timetable is for courses of more than one day in length. The tutor may make slight variations)
"I gained an excellent overall appreciation of the challenges involved in traditional plasters and renders. A good balance of practical and theoretical sessions."Andrew, 2019
BCM Course Leader
David is Director of Odgers Conservation Consultants who provide support, advice and training for clients, architects, surveyors, local authorities and others involved in the conservation of historic structures.