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Fibrous plasterwork conservation

Overview

The purpose of this standard is to provide the delegate with the knowledge to support the use and application of the underpinning historical, technological and theoretical knowledge and requisite practical skills to undertake the correct evaluation and selection of materials, tools, equipment and craft practices relevant to fibrous plasterwork conservation.

Duration

Minimum 3 days of 6 learning hours per day

Purpose/scope

The purpose of this standard is to provide the delegate with the knowledge to support the use and application of the underpinning historical, technological and theoretical knowledge and requisite practical skills to undertake the correct evaluation and selection of materials, tools, equipment and craft practices relevant to fibrous plasterwork conservation.

Scope:

  • interpret information
  • working on period properties
  • legislation regarding period properties
  • safe working practices
  • removal of existing decorative plasterwork
  • written and photographic records
  • prepare backgrounds
  • conserve existing fibrous work
  • stabilising, repairing and re-fixing
  • plasterwork through the ages
  • conservation, restoration, maintenance, conversion and alteration
  • planning regulations and listed building work
  • statute governing bodies for conservation
  • defective fibrous work
  • produce and cast enrichments
  • produce curved surface mouldings
  • moulding shapes of the Greek and Roman style
  • basic principles of minimal intervention
  • salvage of reusable materials
  • resources
  • roles and responsibilities

Occupational relevance

Training delivered against this standard would be relevant to the following occupational groups:

  • operative and craft
  • supervision
  • management and leadership

Delegate pre-requisites

There are no delegate pre-requisites as part of this standard.

Instruction/supervision

As a minimum, course trainers must be able to demonstrate that, in relation to this standard, they have:

  • an award in education and training (or equivalent, as per requirements for approved training organisations)
  • successfully completed training to this standard
  • at least 5 years relevant industrial experience
  • a verifiable CV

Delivery

Delivery may be in an on or off the job environment.

All materials and equipment must be of a suitable quality and quantity for delegates to achieve learning outcomes and must comply with relevant legislation.

The class size and delegate/trainer ratio must allow training to be delivered in a safe manner and enable delegates to achieve the learning outcomes.

The following delivery methods may be used in the delivery of this standard:

  • classroom
  • a blend of classroom and remote

This standard is considered to contain 51% or more practical training.

This standard is considered to be set at an intermediate/advanced level.

Assessment

For the successful completion of training, delegates must complete an end of course practical assessment or knowledge test that measures all learning outcomes and has a pass or fail criteria.

Where this training is assessed using multiple-choice questions, a minimum of 10 questions must be asked and delegates are required to achieve an overall pass mark of at least 80%.

Quality assurance

Assured

Quality assurance against this standard will require initial approval of the training organisation and their content mapped to the standard.

CITB will also conduct an approval intervention, either desk-based or centre visit, to ensure the training organisation can meet the requirements of the training standard.

Approved training organisations (ATOs) will be required to present information on records of training and assessment upon request to CITB for desk-based analysis. They will also be visited annually by the CITB quality assurance team.

Renewal

There are no mandatory renewal or recommended refresher requirements for this standard.

Classification

Lifetime

Please note standards using this classification will only be grant aided once per delegate

Approval date

February 2022

Review cycle

On request or 3 years from approval date

Learning outcomes

Learning outcomes
The delegate will be able to: Additional guidance to support learning outcome

interpret information and guidance

to include:

ABTT Guidance note 20

explain the principles of working on period properties

 

identify the relevant legislation regarding period properties

 

carry out safe working practices

 

remove existing decorative plasterwork, either fibrous or in situ lime work

 

record through written or photographic means condition of plasterwork

 

prepare backgrounds for remedial work

 

explain the methods used to conserve existing fibrous work

 

demonstrate the methods used for conserving existing decorative plasterwork either fibrous or in situ lime work

 

demonstrate the methods of stabilising, repairing and re fixing decorative plasterwork, either fibrous or in situ lime work

to include:

  • screw and washers

  • lightweight suspension

  • wadding and wiring

  • lamination

  • the significances of node points

briefly describe plasterwork through the ages

 

identify the following:

  • plain face cast work

  • panel moulding styles

  • cornice mould work

  • curved cast work

  • fibrous or in situ lime work.

  • how to produce cast enrichments

  • methods used for taking a squeeze

 

explain the differences between:

  • conservation

  • restoration

  • maintenance

  • conversion

  • alteration

 

describe the planning regulations governing buildings and listed building work regulations

 

list the statute governing bodies for conservation and the environment

 

carefully remove and record defective fibrous work

 

explain the methods used to stabilise/restore defective fibrous work

to include:

  • remove defective plasterwork

  • prepare background surface

  • ensure paint is removed from the area

  • stabilise fibrous work including rear face where existing hessian reinforcement has rotted due to early hessian not being treated to resist deterioration

  • repair existing decorative plasterwork using materials to match existing

  • re install conserved fibrous or in situ decorative lime plasterwork

  • methods for securing existing decorative mouldings to avoid need for removing and replacing

  • methods for re fixing loose enrichment

explain how to prepare backgrounds for fibrous work

 

explain how to produce and cast enrichments to conserve original style

 

explain how to produce curved surface mouldings to conserve original style

 

explain how to set out and develop moulding shapes of the Greek and Roman style

 

explain how to validate ways in which the work is to be carried out

 

explain how to maintain the basic principles of minimal intervention

 

explain the purpose of stopping work where conjecture begins

 

explain the purpose of salvage of reusable materials

 

select a range of resources and their sustainability

to include:

plasters

timber

reinforcements

metal

flexible mould compounds

release agents

retardants

accelerators

modelling clays

explain the following roles and responsibilities:

the client

the principal designer

the conservation architect

the main contractor

 

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