Repair Damaged Windscreen Glass in Vehicles — IMI Awards Ltd Vocationally-Related Qualification Motor Vehicle & Transport Revision
This element covers the knowledge and skills required to assess, repair, and document windscreen damage in vehicles following industry standards. It emphas
Topic Synopsis
This element covers the knowledge and skills required to assess, repair, and document windscreen damage in vehicles following industry standards. It emphasises accurate damage identification, understanding repair feasibility based on damage location, and effective customer communication. Mastery ensures safe, compliant repairs that maintain vehicle integrity and customer satisfaction.
Key Concepts & Core Principles
- Damage Assessment: Evaluating the size, depth, and location of chips or cracks to determine repairability according to industry standards (e.g., BS AU 242).
- Resin Injection: Using a bridge injector to apply low-viscosity resin under pressure, ensuring it fills the break completely and eliminates air pockets.
- Curing Process: Exposing the resin to ultraviolet (UV) light to harden it, restoring the windscreen's strength and clarity.
- Health & Safety: Adhering to COSHH regulations when handling resins and solvents, and using personal protective equipment (PPE) like gloves and safety glasses.
- Quality Control: Inspecting the repair for optical distortion, residual stress, or incomplete filling, and polishing the surface to a clear finish.
Exam Tips & Revision Strategies
- Always reference the IMI National Occupational Standards and relevant vehicle manufacturer service information in your answers.
- When identifying damage, practice describing the type, size, and location using standard terminology to demonstrate competence.
- In practical assessments, vocalise each step and your reasoning to show understanding of why procedures are followed.
- Ensure all repair records are completed in ink, with no gaps—incomplete paperwork is a frequent reason for assessment referrals.
- Use correct technical language (e.g., ‘laminated glass’, ‘PVB interlayer’, ‘star break’, ‘crack propagation’) in written responses.
Common Misconceptions & Mistakes to Avoid
- Assuming all cracks are repairable regardless of size or location within the driver's critical viewing area (Zone A).
- Failing to check the vehicle manufacturer's ADAS recalibration requirements after windscreen repair, potentially affecting safety systems.
- Applying repair resin without properly cleaning and drying the impact point, which can lead to poor adhesion and visible scars.
- Not explaining the limitations of repair (e.g., remaining cosmetic blemish) to the customer, causing dissatisfaction.
- Omitting key details in the repair record, such as the resin batch number, making traceability impossible for quality audits.
Examiner Marking Points
- Award credit for correctly identifying damage type (e.g., bullseye, star, combination) according to glass repair manufacturer guidelines.
- Credit demonstration of using a moisture evaporator to ensure the damaged area is completely dry before resin injection.
- Credit accurate determination of repair feasibility based on the zone of damage (e.g., Zone A in driver’s line of sight) and confirming this with the customer.
- Check that repair resin is applied under vacuum/pressure as required, cured fully, and the final finish is pit-less and smooth.
- Evidence of providing clear verbal and written aftercare instructions to the customer, including curing time and care precautions.
- Credit for completing all sections of the repair record accurately, including vehicle details, damage location codes, repair time, and resin batch number for traceability.