Level 3 NVQ Diploma in Heritage Skills (Construction)—Mason

This qualification is aimed at practising masons whose day-to-day work involves stone on historic and traditional buildings, monuments, churches, boundary and retaining structures, and other structures of special interest. Learners are expected to work with a degree of independence at advanced craft level: interpreting drawings, schedules and method statements, planning their own sequence of work, judging when specialist input is required, and taking responsibility for the quality and integrity of what they build or repair. Employment, self-employment or another genuine working arrangement giving regular access to live conservation and restoration contracts is normally necessary, because the evidence cannot be produced anywhere else.

Masons working on historic and traditional structures

Suited to those who cut, fit, lay and secure prepared complex stone components on pre-1919 and other traditionally built structures, and who repair, replicate and stabilise existing masonry as part of conservation contracts.

Masons moving from new-build into conservation work

Appropriate for experienced stonemasons whose skills were developed on modern construction and who are now working regularly with lime-based mortars, salvaged and matched materials, and repair rather than replacement. Access to genuine heritage projects, not modern equivalents, is essential.

Self-employed and subcontract masons

Suitable for sole traders and subcontractors engaged on conservation and restoration projects, provided they can arrange assessor access to their working sites and produce contract-related evidence such as specifications, conservation plans, records of work and client or main-contractor confirmation.

The Mason route is one of several occupational routes within the Heritage Skills (Construction) qualification, each covering a different traditional building craft. Within the Mason structure itself, individual units are not optional, but two of them carry endorsements that must be selected to reflect the work the learner genuinely performs. Endorsement options and the exact wording used to record them can vary between approved versions, so the specific endorsement claimed should be agreed with the assessment centre at the start of the programme.

Conservation and restoration endorsement

The conservation and restoration unit is shared across the Heritage Skills routes and is endorsed against a particular craft area. For a mason, the endorsement is taken in the stonemasonry field of work, and evidence must show sampling, selection, preparation, matching, maintenance and repair carried out on stone fabric rather than on another trade's materials.

Lime mortar endorsement

The lime mortar unit is endorsed against the type of mix the learner prepares — for example mixes involving additives, or mixes incorporating natural or synthetic fibres. Learners are expected to demonstrate the preparation and mixing of both non-hydraulic (lime putty) and hydraulic lime mortars as coarse and fine stuff, with the endorsement recording the particular specialism evidenced.

Assessment for this qualification takes place in a real working environment, so access to suitable heritage masonry work is the single most important requirement. A learner needs live projects that generate the full range of activity described in the units, and an employer or client willing to allow an assessor on site to observe work, review documentation and speak to colleagues.

Realistic access should include:

• Live conservation, restoration or repair contracts involving stone structures, ideally including structures of special interest, traditional construction or historical significance

• Setting out work on level and sloping surfaces, including regular and irregular shapes and walls with curves, splays and angles

• Erection work using prepared complex stone components, including at least some arch, tracery, projecting course, pilaster or buttress work, and temporary support using centring, props or struts

• Facilities and materials for preparing and mixing lime mortars by hand and by machine, including aggregates, hydraulic and non-hydraulic limes, pozzolans, fibres and additives, with protected, well-ventilated space for mixing, storage and control samples

• Hand tools, power tools, setting out equipment, ancillary and safety equipment, access equipment and arrangements for mechanical lifting of stone components

• Project documentation such as drawings, specifications, schedules, method statements, risk assessments, conservation reports and plans, and permits associated with listed buildings or scheduled monuments

• Contact with other occupations, supervisors, clients or conservation specialists, so that communication and coordination can be evidenced

Training-centre exercises and workshop practice may support underpinning knowledge, but they do not replace the workplace performance evidence this qualification requires.

The qualification confirms that a successful learner can carry out advanced heritage masonry work safely, accurately and sympathetically to the existing structure. On completion, a learner can:

• Interpret and extract information from drawings, specifications, schedules, method statements, risk assessments, conservation reports and plans, and manufacturers' and suppliers' information

• Comply with current legislation, official guidance and permit requirements, including those applying to listed buildings and scheduled monuments

• Plan a sequence of work, assess resource requirements and identify how work activities influence one another

• Select stone components, aggregates, limes, additives, fixings, fittings and equipment of the right quality and quantity, and confirm that they conform to specification

• Calculate distances, levels, quantities, areas, volumes and wastage relevant to setting out and erecting stonemasonry

• Set out regular and irregular stonemasonry structures on level and sloping surfaces, including curved, splayed and angled walls, using profiles, datums and setting out equipment

• Erect complex stone structures, forming arches and tracery, installing projecting courses, pilasters and buttresses, and using temporary centring, props and struts

• Prepare and mix non-hydraulic and hydraulic lime mortars as coarse and fine stuff, create control samples, and protect stored mortars from frost, rain and heat

• Conserve, repair, replicate and stabilise existing stonemasonry, brickwork or earthen structures, preparing compatible mortars, forming joint finishes and integrating surface finishes

• Apply conservation principles including minimum intervention, reversibility, honest repair and stopping work at the point where guesswork would begin

• Identify and report hazards, deteriorated or inappropriate materials, hazardous substances, and endangered or protected flora and fauna

• Use health and safety control equipment appropriately, including collective measures, PPE, RPE and local exhaust ventilation, and work safely at height and around plant and machinery

• Protect the work and surrounding area, maintain a tidy workspace and control and dispose of waste in line with environmental responsibilities

• Record work carried out in written or digital formats and communicate effectively with colleagues, clients, contractors and other occupations

• Complete work within the programme and report circumstances likely to affect deadlines

Competence is assessed by an occupationally competent assessor against the performance and knowledge requirements of each unit, and evidence is collected into a portfolio as the learner carries out genuine heritage masonry work. Assessment is graded on a pass or fail basis and is internally quality assured within the centre and externally verified by the awarding organisation. Assessors are expected to hold current, verifiable industry experience in the relevant occupational area and to use a combination of methods rather than relying on any single source of evidence.

Workplace observation

Direct observation of masonry work is the primary evidence source. An assessor watches the learner setting out, erecting, repairing or conserving stonework, mixing lime mortars, using access equipment and working safely around plant, and records what was seen against the relevant assessment criteria.

Portfolio evidence

The learner compiles a portfolio containing observation records, evidence of the completed work, and supporting documentation from live contracts such as drawings, specifications, schedules, method statements, risk assessments and conservation plans. Photographic and written records of repairs, replicated details, mortar mixes and control samples are particularly valuable for conservation work, where much of the finished result is deliberately unobtrusive.

Professional discussion

Structured discussion with the assessor is used to explore judgement and reasoning that observation alone cannot capture — for example why a particular mortar mix was specified, how significance was assessed before intervention, or why work was halted and reported rather than continued.

Oral and written questioning

Questioning confirms the underpinning knowledge attached to each unit, including the lime cycle, protection of mortars from frost and heat, temporary support to structures, hazardous materials such as asbestos and lead carbonate, calculation of quantities and wastage, and legal controls affecting listed buildings and scheduled monuments.

Witness testimony and work products

Statements from supervisors, employers, clients or conservation professionals can corroborate performance where the assessor was not present. Work products — completed arches, tracery, repointing, joint finishes, control samples, records of work and handover documentation — provide tangible evidence of the standard achieved.

Recognition of Prior Learning

Prior learning and experience relevant to the units may be considered as part of the evidence base, subject to the awarding organisation's recognition of prior learning policy and to the evidence being current, authentic and sufficient. Recognition of prior learning does not remove the requirement for workplace performance evidence.

Simulation

Simulation is not permitted for this qualification. Workplace evidence of skills cannot be simulated, which means the practical elements — setting out, erecting, conserving, repairing and mortar preparation — must be demonstrated on real work in a real working environment. Consistent performance is established by gathering evidence across a range of activities and occasions rather than from one task. The qualification is achieved only when every mandatory unit, with its applicable endorsements, has been fully evidenced and verified.

Achieving this qualification confirms advanced craft competence in heritage masonry and supports continued work on conservation, restoration and repair contracts. Progression depends on the learner's experience, the type of work available in their region and, in some cases, on further qualifications or licences; the routes below are typical rather than guaranteed.

Craft and specialist masonry roles

Continued work as a heritage or conservation mason on listed buildings, scheduled monuments, ecclesiastical buildings, monuments and traditional structures. Some masons specialise further in areas such as stone carving, banker masonry, fixing, or the repair of particular building types or stone geologies, usually through additional experience and specialist training.

Related heritage crafts

Experience gained through the conservation and lime mortar units can support broadening into adjacent traditional building skills, such as lime plastering, earthen construction or brickwork conservation. Where a separate occupational competence is required, a corresponding qualification route within the Heritage Skills family would normally be needed.

Supervisory and site roles

With further training and experience, masons may move into charge-hand, foreman or occupational supervision roles on conservation projects. Progression of this kind typically requires a supervisory qualification in addition to craft competence.

Higher-level qualifications

The qualification provides a basis for progression to higher-level study in the same or a related occupational area, including construction site supervision, conservation-related technical qualifications and specialist conservation courses. Entry requirements for these routes are set by the relevant provider or awarding organisation.

Achievement of this qualification can support an application for a CSCS card in a heritage craft occupation. Card requirements are set by the scheme rather than by the qualification, so the position below should always be confirmed before applying.

The relevant card is the Gold Skilled Worker card, which is available to those who have achieved a construction-related NVQ at Level 3. Heritage craft occupations, including masonry-related traditional building skills, are carded at gold because the heritage competence qualification is currently offered at Level 3. The occupational mapping for this qualification is to heritage masonry work rather than to general new-build masonry, and the occupation selected on the application should reflect the work actually carried out and the endorsements evidenced within the qualification.

Holding this qualification does not automatically issue or guarantee a card. A separate application must be made to the card scheme, supported by evidence of certification, and applicants must also have passed the appropriate CITB Health, Safety and Environment test within the last two years, at the level specified for the occupation being applied for. Cards of this type are issued for five years and must then be renewed, subject to the scheme's requirements at that time.

Because occupations, accepted qualifications and test levels are periodically reviewed, applicants should confirm the current position using the official Card Finder before applying, and should check that the occupation they intend to apply under matches the endorsements recorded on their certificate.