Traditional screeds - Refresher

Last updated: 6 September 2021
Grant rate/tier: £70 (Tier 2 - refresher)
Grant code: GET3066

Overview

The purpose of the Traditional screeds – Refresher course is for delegates who have previously passed the full Traditional screeds course or subsequent refresher course and can provide proof of attendance.

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Duration

2 days of 6 learning hours. If e-learning only, the duration is to be at least 50% of this.

Purpose/scope

Occupational relevance

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

operative and craft.

Delegates pre-requisites

Delegates must have successfully completed training to the Traditional screeds standard 3 years prior to attending this refresher.

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 2 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 / practical learning
e-learning
a blend of classroom and e-learning.

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

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

Assessment

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

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

Renewal every 3 years.

Classification

Mandatory Renewal.

Buffer / grace period

3 months.

Approval date

May 2021

Review cycle

On request or 3 years from approval date.

Learning outcomes to be refreshed

Learning outcomes to be refreshed
The delegate will be able to:	Additional guidance to support learning outcome
interpret and understand guidance and information relating to the work specification	Contract information: job sheet, method statement and risk assessment site induction company policies Product/system information: product datasheets (store materials on site in a secure location to meet manufacturer’s specified storage conditions) safety (COSHH) datasheets delivery notes (check material type, quantity and batch numbers) Legislation: roles and responsibilities legal obligation to protect yourself, the area and members of the public.
select and use appropriate PPE for the work	Function of PPE Correct fit Storage, maintenance and cleaning Replacement Equipment manufacturers’ operator’s manual Including: eye protection, head protection, safety footwear, gloves, ear defenders, respiratory protective equipment, high visibility clothing
describe the legal obligations to protect themselves, the area and members of the public	Establish a safe area of work Use of barriers and signage Provision of suitable ventilation if required
identify the generic types of cementitious floor screeds, their uses, and limitations	Types of screed: screeds as underlayments wearing screeds bonded screeds unbonded screeds floating screeds Screed selection: thermal and acoustic insulation requirements weight limitations drying time requirements/programme limitations requirements for underfloor heating
explain screed delivery and installation methods	Site mixed or ready mixed Site delivery of ready mixed screeds
describe composition and equipment used for site mixed screed installations	Mixing equipment i.e. forced action mixer and mixer pumps BS 8204-1 Screeds, bases and in situ floorings. Concrete bases and cementitious levelling screeds to receive floorings. Code of practice Cement types Aggregates Admixtures - plasticisers and super plasticisers and their role Reinforcement fibres Water requirements
describe the importance of subfloor quality and be aware of common preparation methods	Mechanical removal of laitance Scabbling of in situ concrete Shot blasting pre-cast units Coarse aggregate exposure Vacuum removal of dust and debris Primers and bonding slurries (including polymer and epoxy primers
explain the importance of priming the substrate	Bonding agents Separating membranes Thermal and acoustic insulation Preventing out-gassing/pin-holing from the substrate Mitigating the effects of moisture in the substrate Consider whether the substrate is warming or cooling during application of primer
describe methods used to install traditional cementitious screeds	Manual installation Automatic screeding machines Use of screed rails/battens and laser levels Compaction techniques Finishing methods Number of layers i.e. multiple layers > 50 mm Typical thicknesses Curing
describe curing and drying requirements for newly installed screeds	Curing membranes Drying out periods
explain the use of reinforcement within cementitious screeds	Reinforcement fibres Steel reinforcement Importance for unbonded/floating screeds
list common screed repair methods	Crack repairs (static and live cracks) Weak screeds/areas Debonding (stitch pinning/resin injection)
explain factors to be considered when planning an installation	Layout including: starting point and how to progress daywork joints, terminations and continuing from previous day’s work establishing, setting out and achieving correct surface regularity and deviation from datum level. number and position of mixing stations lighting disposal of waste protection
mix sand/cement screeds using appropriate mixing equipment under supervision	Following manufacturer’s recommendations Mixing methods and equipment Ambient temperature requirements Forced action mixers Use of appropriate or specified admixtures Dust extraction requirements Hazards associate with mixing (dust, noise, splashing, fatigue)
apply screeding materials (including primers/bonding agents) using appropriate equipment and method of application to achieve required coverage rates, thickness, and surface finish under supervision	Following manufacturer’s recommendations Check thickness achieved Use of laser levels
describe inspection and testing methods during and after application	Quality and preparation of base Priming of the base Ambient conditions during application and cure Mixing of materials Applied thickness Levels and surface regularity (SR1, SR2, SR3 etc.) Departure from datum Screed workability (“snowball”) test Compressive strength In situ crushing resistance Hollowness Moisture testing Curing
recall how to achieve joint and edge details	Movement joints Daywork joints Bay size Edges and drain details Crack control joints (door thresholds, constrictions, corridors, corners etc.) Terminations
protect floor area following installation	Manufacturer’s recommendations Signage Barriers
clean tools and equipment and understand the safe use of solvents and other cleaning materials in line with health & safety guidelines	Manufacturer’s data sheets Control of Substances Hazardous to Health (COSHH) Risk assessments
interpret guidance and information relating to planning for the installation of screed flooring materials.	British Standards: BS 8204 parts 1, 2, 3 & 7 FeRFA guidance notes Contract information: job sheet, method statement and risk assessment. Product/System information: product technical datasheets & safety datasheets.
dispose of waste in a responsible manner	hazardous and non-hazardous waste disposal handling of waste material handing of waste packaging