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Introduction to sealant application gunning techniques


The purpose of this standard is to provide the candidate with the initial knowledge and skills to develop their gunning techniques for applying sealants.

CITB has developed this standard in discussion with industry


Minimum 2 days of 6 learning hours per day.


The purpose of this standard is to provide the candidate with the initial knowledge and skills to develop their gunning techniques for applying sealants.

The scope of this standard covers:

  • safety measures and personal protective equipment (PPE)
  • gun types
  • apply and gun sealant to joints
  • mix multi-part sealant
  • clean tools and disposal of waste
  • manufacturer’s specifications
  • defects and reporting
  • measuring tools
  • regulations
  • locations for sealant use
  • substrates
  • uses/applications, coverage, technical data
  • advantages, colours, method of use
  • gun types, nozzle preparation.

Occupational relevance

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

  • operative and craft
  • supervision.

Candidate pre-requisites

The candidate pre-requisite for this course are successful completion of the following courses:-

  • BS8000 part 16 code of practice
  • Introduction to sealant application, preparation.


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

  • a train the trainer or instructional techniques course certificate
  • successfully completed training to this standard
  • achieved the NVQ Level 2 Certificate in joint sealant application
  • a verifiable CV.


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

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

The class size and candidate/instructor ratio must allow training to be delivered in a safe manner and enable candidates to achieve the learning outcomes.

The following delivery methods may/may not be used in the delivery of this standard:

  • classroom
  • workshop.

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

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


Methods of assessment considered appropriate for training delivered against this standard are:

For the successful completion of training, candidates must complete a practical assessment.

Quality assurance

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.


No renewal/refreshment requirements - There are no mandatory renewal or recommended refreshment requirements for this standard.

Approval date


Review cycle

Either on request or in 3 years from approval date.

Learning outcomes

The candidate will be able to:

  • Select and fit appropriate PPE

  • Explain safety measures and safe working environments

  • Recognise and select various gun types

  • Identify nozzles used:
    • types
    • size
    • shape.
  • Apply and gun sealant using appropriate methods

  • Mix multi-part sealant:
    • tools/equipment
    • mixing times
    • gun loading.

  • Utilise appropriate methods to clean tools/equipment correctly and dispose of waste in an environmentally safe way

  • Check equipment before use to manufacturer’s specifications

  • Interpret COSHH information from manufacturer spec. sheets, and other sources of information to assist in choice of PPE, emergency actions in case of accident and environmentally safe means of disposal

  • Identify the importance of method statements & risk assessment in the safety process

  • Read and interpret job sheets to identify correct tools and materials, and will understand company stock record systems

  • Identify defects and report appropriately

  • Use measuring tools

  • List the regulations affecting the sealant industry

  • List appropriate PPE

  • Identify locations for sealant use, including:
    • concrete floors
    • masonry
    • soffits
    • window/door frames
    • work surfaces/sanitary ware
    • flashings.

  • Identify different substrates for application of sealants, including:
    • concrete
    • UPVC
    • stone
    • tile
    • brick
    • glass
    • aluminium
    • paint surfaces.

  • Explain the following with regards to sealants:
    • uses and applications
    • protection times
    • coverage
    • technical data
    • advantages
    • colours
    • method of use.

  • Interpret information from specification sheets as to:
    • material active life
    • curing times
    • technical data (including any relevant H&S information and emergency procedures in case of accidental spillage, inhalation or ingestion)
    • expiry dates – their significance
    • method of use – including any PPE
    • mixing techniques – including whether ventilated areas are required and why)
    • masking
    • storage requirements.

Additional information about this standard

Additional information is available from manufacturers' literature.