Application
This unit supports the attainment of skills and knowledge to repair and replace valley roof sections, including flashings, which includes working with others and as a member of a team. |
Prerequisites
Apply OHS requirements, policies and procedures in the construction industry | ||
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
1. Plan and prepare. | 1.1. Work instructions, including plans, specifications, quality requirements and operational details are obtained from relevant information, confirmed and applied to the scope of work performed. 1.2. Safety (OHS) requirements are followed in accordance with safety plans and policies. 1.3. Signage and barricade requirements are identified and implemented. 1.4. Plant, tools and equipment selected to carry out tasks that are consistent with the requirements of the job, checked for serviceability and any faults are rectified or reported prior to commencement. 1.5. Materials quantity requirements are calculated in accordance with plans, specifications and quality requirements. 1.6. Materials appropriate to the work application are identified, obtained, prepared, safely handled and located ready for use. 1.7. Environmental requirements are identified for the project in accordance with environmental plans and statutory and legislative authority obligations and applied. |
2. Prepare valley section for repair. | 2.1. Damaged area is identified and located in accordance with plans and specifications. 2.2. Fall arrest system is installed to roof perimeter in accordance with regulatory and workplace requirements. 2.3. Tiles to be repaired or replaced are identified from a removed sample. 2.4. Damaged tiles are removed to ensure minimum disturbance to remaining roof tiles. 2.5. Pointing or mortar is removed ensuring no damage to roof tiles. 2.6. Damaged area is left clean and free of loose waste. 2.7. Roof structure valleys and flashing installations are checked for soundness and adequacy according to specifications and manufacturer recommendations. |
3. Repair valley sections. | 3.1. Damaged structural components of valley section of roof are disassembled and repaired or replaced in accordance with job specifications and manufacturer recommendations. 3.2. Roof tie down fixings are replaced or installed to roof structure in accordance with job specifications and manufacturer recommendations. 3.3. Replacement valley flashings are fabricated and installed in accordance with job specifications and manufacturer recommendations. 3.4. Work area and material surface are cleaned free of debris and waste materials in accordance with workplace procedures. 3.5. Replacement and recycled roof tiles are retained and sorted to ensure conformity to requirements in matching original roof tiles to specification. 3.6. Loose mortar is removed from roof tile surface and mortar joints are struck to match existing or specified colour of roof tiles. |
4. Replace roof tiles. | 4.1. Roof tiles are examined individually to ensure conformity to requirements in matching original tiles. 4.2. Mortar is mixed to required composition to match original specifications. 4.3. Roof tiles are laid to maintain conformity to original gauge and alignment, while maintaining bond to specifications. 4.4. Roof tiles are laid to produce designed features in accordance with original design and specifications. |
5. Replace pointing material. | 5.1. Pointing material is prepared and distributed for use to design specifications. 5.2. Pointing material is applied to ridge tile joints to specification. 5.3. Joints are pointed to produce matching finish to existing surrounds, and loose material is removed from roof tile surface. |
6. Clean up. | 6.1. Work area is cleared and materials disposed of, reused or recycled in accordance with legislation, regulations, codes of practice and job specification. 6.2. Plant, tools and equipment are cleaned, checked, maintained and stored in accordance with manufacturer recommendations and standard work practices. |
Required Skills
Required skills |
Required skills for this unit are: communication skills to: determine requirements follow instructions read and interpret: documentation from a variety of sources drawings and specifications report faults use language and concepts appropriate to cultural differences use and interpret non-verbal communication, such as hand signals identifying and accurately reporting to appropriate personnel any faults in tools, equipment or materials numeracy skills to apply measurements and calculations organisational skills, including the ability to plan and set out work teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities technological skills to: use a range of mobile technology, such as two-way radio and mobile phones voice and hand signals to access and understand site-specific instructions. |
Required knowledge |
Required knowledge for this unit is: characteristics and applications of materials used in repairing tiled roof valleys, valley irons and flashings general construction terminology installation of roof battens, sarking and flashing job safety analysis (JSA) and safe work method statements material safety data sheets (MSDS) materials storage and environmentally friendly waste management measuring and marking plans, drawings and specifications plant, tools and equipment types, characteristics, uses and limitations processes for the calculation of material requirements quality requirements roof construction systems and structures and tiling considerations techniques and procedures for repairing tiled roof valleys, valley irons and flashings working on roof structures workplace and equipment safety requirements. |
Evidence Required
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. | |
Overview of assessment | This unit of competency could be assessed in the workplace or a close simulation of the workplace environment, provided that simulated or project-based assessment techniques fully replicate construction workplace conditions, materials, activities, responsibilities and procedures. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit | A person who demonstrates competency in this unit must be able to provide evidence of the ability to: locate, interpret and apply of relevant information, standards and specifications comply with site safety plan and OHS legislation, regulations and codes of practice applicable to workplace operations comply with organisational policies and procedures, including quality requirements safely and effectively use tools, plant and equipment communicate and work effectively and safely with others as a minimum, remove and replace 1.5 lineal metres of a tiled roof and damaged roof valley iron, ensuring: correct identification of requirement and completion of repairs and replacement correct selection and use of appropriate processes, tools and equipment completing all work to specification compliance with regulations, standards and organisational quality procedures and processes. |
Context of and specific resources for assessment | This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints. Assessment of essential underpinning knowledge will usually be conducted in an off-site context. Assessment is to comply with relevant regulatory or Australian standards' requirements. Resource implications for assessment include: an induction procedure and requirement realistic tasks or simulated tasks covering the mandatory task requirements relevant specifications and work instructions tools and equipment appropriate to applying safe work practices support materials appropriate to activity workplace instructions relating to safe work practices and addressing hazards and emergencies material safety data sheets research resources, including industry related systems information. Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support. |
Method of assessment | Assessment methods must: satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Training Package include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application reinforce the integration of employability skills with workplace tasks and job roles confirm that competency is verified and able to be transferred to other circumstances and environments. Validity and sufficiency of evidence requires that: competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence. Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed. Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff. |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. | |
Information includes: | diagrams or sketches instructions issued by authorised organisational or external personnel manufacturer specifications and instructions, where specified MSDS memos regulatory and legislative requirements pertaining to repairing and replacing valleys, valley irons and flashings relevant Australian standards safe work procedures relating to repairing and replacing valleys, valley irons and flashings signage verbal, written and graphical instructions work bulletins work schedules, plans and specifications. |
Scope of work: | includes repairing or replacing valley sections and valley irons, replacing tiles and repointing a repaired roof specifications include tile colour, tile profile, type of bond, nailing sequence and wind category tiles may be interlocking (terracotta) or non-interlocking (concrete) and conform to standards pointing material may be flexible pointing material or its equivalent. |
Safety (OHS) is to be in accordance with state and territory legislation and regulations and project safety plan and may include: | emergency procedures, including extinguishing fires, organisational first aid requirements and evacuation handling activities that may require the assistance of others or the use of manual or mechanical lifting devices where size, weight or other issues, such as a disability are a factor hazard control hazardous materials and substances, including cement and curing agents organisational first aid PPE prescribed under legislation, regulations and workplace policies and practices safe operating procedures, including the conduct of operational risk assessment and treatments associated with: earth leakage boxes lighting power cables, including overhead service trays, cables and conduits restricted access barriers surrounding structures traffic control trip hazards working at heights work site visitors and the public working in proximity to others working safely on roofs use of firefighting equipment use of tools and equipment workplace environmental requirements and safety. |
Tools and equipment: | include: air compressors and hoses bedding frames blowers brooms buckets calculators chalk lines chisels concrete mixers elevators fall safety devices gutter protectors hammers hand saws high pressure water cleaners ladders measuring tapes and rules nail bags nail guns pincers power drills power leads power saws shovels squares string lines tile cutters trowels may include: blocks breaks or cutting irons guillotines rippers scaffolds slate cutters slate reefers slater's hammers slating knives small compressors small petrol or diesel engines. |
Materials: | include: adhesives concrete and terracotta tiles fastenings and other mechanical fixings flashings mortar sarking materials timber and metal battens may include: flexible pointing material lead shingles slate other hand manufactured products. |
Quality requirements include relevant regulations, including: | Australian standards internal company quality policy and standards manufacturer specifications workplace operations and procedures. |
Environmental requirements include: | clean-up management dust and noise stormwater management vibration waste management. |
Statutory and regulatory authorities include: | federal, state and local authorities administering the applicable Acts, regulations and codes of practice. |
Sectors
Unit sector | Construction |
Employability Skills
This unit contains employability skills. |
Licensing Information
Not Applicable