This apprenticeship has been retired

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Overview of the role

Applying insulation and cladding materials.

Commercial thermal insulation operative

Reference Number: ST0333

Details of standard


Thermal Insulation Operatives apply insulation materials and pre-formed cladding for the prevention of heat loss, heat gain, energy efficiency and personnel protection either on a construction site or within a workshop.

Depending upon the industry sector, Thermal Insulation Operatives may work on a diverse range of sites including:

  • Process Plants
  • Commercial Construction sites

Thermal Insulation Operatives can expect to work under supervision, or where appropriate, on their own initiative. The role of a Thermal Insulation Operative involves the installation and application of appropriate thermal insulation materials, identifying the specific surface types and the changing temperature and site conditions. The Operative will apply pre-formed cladding or weatherproofing materials in line with the job specification and site instructions. When in a refurbishment environment, additional preparation tasks may be required e.g. removal of existing materials, cleaning down of and appropriate preparation of surfaces.


Apprentices without Level 1 English and maths will need to achieve this level and take the test for Level 2 English and maths prior to taking the end-point assessment.

Knowledge: Thermal Insulation Operatives need to understand:

  • the varying weather conditions of the site and how this can affect the working environment and the working conditions of all co-workers on the site, safe working and other relevant legislation
  • how to communicate accurately/effectively with others and comply with
  • how to interpret and use relevant product information and design specifications
  • how to calculate quantity, length and area of materials to be used in order to minimise wastage of resources
  • the characteristics, qualities, uses, sustainability, limitations and defects associated with different types of insulation materials such as mineral wool, glass fibre, cellular glass, nitrile rubber
  • how to joint, seal, weatherproof and fit materials in accordance with BS 5970:2012. Thermal insulation of pipework, ductwork, associated equipment and other industrial installations in the temperature range of -100°C to +870°C.
  • the importance of, and need for, the correct use of Personal Protective Equipment (PPE)
  • basic risks in a refurbishment environment and in particular the risks associated with the handling of asbestos

Skills: Thermal Insulation Operatives are able to:

  • identify and correctly use tools and equipment including: Dividers, Mole grips, Drills and Safe blades
  • comply with all organizational security, safety arrangements and procedures
  • apply insulation materials to cylindrical and flat surfaces
  • fit pre-formed metal cladding/and or other finishes for insulation protection
  • work reliably and safely, sometimes without close supervision, to approved industry standards and safe working practices
  • work effectively and efficiently, both individually and as part of a team, maintaining effective relationships with colleagues and the public
  • safely move, handle and store resources
  • competently erect and dismantle portable scaffold towers and work safely at heights to comply with The Work at Height Regulations which requires all persons working at height to be competent using the relevant equipment and correct personal safety

Behaviours: All Thermal Insulation Operatives are expected to demonstrate the following behaviours:

  • act professionally demonstrating a positive, dependable and responsible attitude
  • be risk aware and help reduce risks by checking information
  • display a self-disciplined, self-motivated, proactive approach to work understanding individual personal limitations
  • be receptive to feedback, willing to learn new skills
  • be adaptable and able to adjust to change as required
  • be prepared to make a personal commitment and be able to commit to the objectives of the employer and to the wider professional standards of the industry

Level: This is a Level 2 Apprenticeship.

Duration of Apprenticeship: The Apprenticeship will typically be completed in 18 months

Review: The Apprenticeship Standard will be reviewed after 3 years.

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Status: Retired
Level: 2
Reference: ST0333
Version: 1.0
Date updated: 23/10/2023
Approved for delivery: 21 February 2018
Route: Construction and the built environment
Typical duration to gateway : 18 months (this does not include EPA period)
Maximum funding: £9000
LARS Code: 234
EQA Provider: Ofqual
Employers involved in creating the standard: Western Thermal Ltd, Severn Insulation Ltd, JS Miller Contracts Ltd, Ticon Insulation Ltd, Hertel Ltd, Rainham Industrial Services, Kaefer C&D Ltd, Cape Insulation Ltd, Excel Insulation Ltd, CGB Humbertherm, Consolidated Insulation Services Ltd, RDA Insulation Ltd, SHS Integrated services Ltd, Lagwell Insulation Company Ltd, Darroch Insulation Services Ltd, Thermal Insulation Contractors Association

Version log

Version Change detail Earliest start date Latest start date Latest end date
1.1 Occupational standard, end-point assessment plan and funding band revised. 12/10/2023 Not set Not set
1.0 Approved for delivery 21/02/2018 11/10/2023 Not set

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