Subfloor preparation for textile and impervious flooring (domestic)


The purpose of training delivered against this standard is to provide delegates with an introduction to the technical aspects of subfloor preparation using approved methods in domestic environments.

CITB has developed this standard in discussion with industry


Minimum 1 day of 6 learning hours


The purpose of training delivered against this standard is to provide delegates with an introduction to the technical aspects of subfloor preparation using approved methods in domestic environments.

The scope includes:

  • Hazards, risks and controls associated with sub-floor preparation
  • Relevant standards, to include:
    • BS 5325 – Installation of textile floor coverings
    • BS 8201 – Code of practice for installation of flooring of wood and wood-based panels
    • BS 8203 – Code of practice for installation of resilient floor coverings
    • BS 8204 – Concrete bases and cementitious levelling screeds to receive floorings
  • Working with customers
  • Site preparation
  • Subfloor types, to include:
    • solid
    • wood
    • combination
    • characteristics
    • common problems
    • recommended approaches
  • Subfloor moisture testing, to include:
    • equipment
    • non-invasive test methods
    • invasive test methods
    • recording and evaluating results
  • Subfloor preparation, to include:
    • plywood
    • subfloor renovation systems
    • laitance
    • damp proof membranes (DPM)
    • smoothing compounds
    • selection and application
  • Underfloor heating

Occupational relevance

Training delivered against this standard would be relevant to the following occupational group(s):

  • operative and craft
  • supervision
  • management and leadership.

Candidate pre-requisites

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


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
  • at least 2 years relevant industrial experience
  • 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 not be used in the delivery of this standard:

  • e-learning

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


For the successful completion of training, the trainer will be required to make a declaration of the learner’s contribution during the course and that they are confident the learner has understood the content of the course.

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

January 2019

Review cycle

Either on request or in 3 years from approval date.

Learning outcomes

The candidate will be able to: Additional guidance to support learning outcome
Identify the hazards, risks and controls associated with subfloor preparation
Identify the key requirements of relevant standards
Work with clients to ensure their requirements are met
Identify site specific constraints that may impact subfloor preparation
Identify subfloor types
Test subfloor moisture levels  
Prepare subfloors  
Prepare subfloors for underfloor heating systems