German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Painting and coating work
1Key Takeaways
ATV DIN 18363 "Maler- und Lackierarbeiten — Beschichtungen" applies to painting work with paints, varnishes and other coating materials. ATV DIN 18363 is not applicable to: ——Thermal insulation composite systems (see ATV DIN 18345 "Wärmedämm-Verbundsysteme") - Plaster and plaster work (see ATV DIN 18350 "Putz- und Stu…
2Expert Interpretation
This in-depth analysis of the German DIN 18363:2016 coating engineering standard covers coating material selection, construction process requirements, acceptance criteria, and measurement rules. This detailed analysis of the standard's updated content, technical requirements, and practical application cases provides professional guidance for construction coating applications.
DIN 18363:2016 Standard Overview and Technological Evolution
The German standard DIN 18363:2016, "Painting Works — Coatings," as a key component of VOB/C, replaces the 2012 edition and reflects the latest developments in painting engineering technology. This standard applies to painting operations using paints, coatings, and other coating materials, providing detailed technical specifications and quality requirements for construction projects.
Analysis of Major Standard Updates
Compared to the 2012 edition, the 2016 edition of the standard has undergone several significant revisions: first, specialized technical revisions to adapt to technological developments in the construction industry; second, updated references to VOB/A; third, the structure of Chapter 5, "Metrology," has been restructured; and finally, the normative references have been updated to the April 2016 status.
| Version comparison dimensions | DIN 18363:2012 | DIN 18363:2016 |
|---|---|---|
| Normative References | Cited standards up to 2012 | Updated to April 2016 |
| Metrology Chapter Structure | Traditional Structure | Restructured and Optimized |
| Technical Adaptability | Based on current technology | Adaptable to new technological developments |
| Construction Process Requirements | Basic Requirements | More detailed and specific |
Material Technical Requirements and Standard References
Base Treatment Materials
The standard sets clear requirements for base treatment materials. For example, alkaline cleaners must be able to roughen the surface of existing oil-based paint and oil-based paint coatings. This ensures the adhesion of subsequent coatings.
Primer Materials
Primer materials must reduce or equalize the water absorption of the substrate and ensure the adhesion of subsequent coatings. For wood and wood-based materials, the requirements of DIN EN 152, DIN EN 927-1, and DIN EN 927-2 must be met.
Coating Material Classification Requirements
The standard classifies coating materials into three categories: opaque coatings, clear coatings, and colorless coatings. Each category has specific performance requirements and testing standards.
Application Process Technical Requirements
Substrate Preparation Requirements
The substrate must be thoroughly inspected before application, and any unsuitable substrate conditions should be promptly reported. Minor individual damage should be repaired; repairs beyond this scope are considered special services.
Coating Application Process
The coating should be applied evenly without joints or streaks. All coatings should be applied without plastering. If plastering is required, the plaster material should be applied once throughout and smoothed.
Environmental Condition Control
Under unsuitable weather or indoor environmental conditions, such as when using dispersed coatings when relative humidity exceeds 80% or surface temperatures fall below 8°C, special measures should be taken in consultation with the client.
Measurement and Acceptance Standards
Measurement Unit Regulations
The standard specifies detailed measurement units for different project components: area measurement (m²) applies to large areas such as ceilings, walls, and floors; length measurement (m) applies to linear components such as window sidewalls and joints; and quantity measurement (units) applies to individual components such as doors and windows.
Excess Calculation Rules
Openings, joints, and decorative moldings ≤30cm wide with a single dimension ≤2.5m² are not included in the measured area. This regulation ensures fairness and accuracy in measurement.
Measurement of Special Components
For special components such as irregular surfaces, pipes, and radiators, the standard specifies specific measurement methods and conversion factors to ensure standardized project measurement.
Standard Implementation Recommendations and Precautions
Technical Preparation Phase
When compiling the bill of quantities, detailed information should be provided based on the specific circumstances: site conditions, construction requirements, coating material type, color requirements, and construction process. In particular, the substrate conditions, treatment requirements, and acceptance criteria should be clearly defined.
Construction Process Control
During construction, environmental conditions should be strictly controlled to ensure adequate drying time between coats. For multi-layer coating systems, the next coat must be applied only after the previous coat has dried.
Quality Acceptance Key Points
During acceptance, key indicators such as coating uniformity, color consistency, and adhesion should be examined. For special functional coatings, such as fire retardant and anti-corrosion coatings, appropriate functional testing should also be conducted.
Project Application Case Analysis
Case 1: Exterior Wall Renovation Project
In a renovation project for the exterior wall of a historic building, DIN 18363 was used to guide construction. A detailed inspection of the base layer revealed algae growth and chalking. Following standard requirements, a biocidal treatment was performed, followed by high-pressure cleaning to remove the algae and chalking layer. Finally, the coating system was applied according to a standard coating system, ensuring the long-term durability of the project.
Case Study 2: Industrial Plant Anticorrosion Project
In a corrosion protection project for the steel structure of an industrial plant, the three-layer coating system (primer, midcoat, and topcoat) was applied in strict accordance with standard requirements. A zinc powder primer that complies with DIN EN ISO 3549 was selected to ensure long-term protection in corrosive environments.
Standard Development Trends and Outlook
With increasing environmental protection requirements and the development of new technologies, coating standards will continue to evolve. Possible future developments include stricter VOC emission requirements, the use of new environmentally friendly materials, and the integration of digital construction management technologies. As the authoritative standard for coating projects in Germany, DIN 18363 will continue to lead the industry's technological development.
Relevant companies and technicians are advised to pay close attention to standard updates, keep abreast of the latest technical requirements, continuously improve construction quality and technical level, and contribute to the sustainable development of construction projects.