What are glazed ceramic roof tiles?

Glazed ceramic roof tiles are manufactured primarily from clay through complex processing stages such as clay aging, rolling, kneading, and extrusion. After shaping, the raw products are dried, glazed, and fired at temperatures between 1,000 and 1,150°C. These tiles are highly durable, strong, and available in various elegant colors, harmonizing traditional and modern architectural styles.

On June 30, 2023, Deputy Minister Nguyễn Văn Sinh signed Circular No. 04/2023/TT-BXD promulgating QCVN 16:2023/BXD. The regulation officially took effect on January 1, 2024, replacing the previous version QCVN 16:2019/BXD. In the 2023 version, glazed ceramic roof tiles were added to the list of products required to undergo conformity certification, quality declaration, and CR marking before being placed on the market. According to this regulation, glazed ceramic roof tiles must obtain conformity certification and conformity declaration prior to market circulation.

Applicable subjects

The regulation applies to:

• Organizations and individuals involved in manufacturing, importing, trading, and using construction material products and goods

• Testing organizations and conformity certification bodies performing assessment and certification of construction materials

• Relevant state management authorities responsible for construction material quality

Technical requirements for glazed ceramic roof tiles

• Water absorption (%)

• Breaking load in bending for roofing tiles (N/cm of tile width)

• Glaze crack resistance determined by the appearance of cracks after testing

Benefits of conformity certification for glazed tiles under QCVN 16:2023/BXD

• Improving product quality, attracting customers, increasing revenue and competitiveness, and enhancing the ability to participate in bidding packages

• Compliance with quality management regulations of the Ministry of Construction and the Directorate for Standards, Metrology and Quality; products are affixed with the CR mark and properly labeled to meet conformity requirements, reducing inspection risks

• Establishing clear and effective quality management processes, improving internal management, minimizing errors, and enhancing organizational performance; supporting access to international markets and business expansion with foreign partners and customers

• Preventing substandard products, ensuring durability and reputation, and meeting increasingly high safety and convenience demands of customers

ISSQ Institute for Standards and Quality Development Studies is a certification body designated by the Ministry of Construction, with a team of highly experienced experts.

Conformity certification process at ISSQ

1. Receive application dossier for certification

2. Sign a science and technology service contract

3. Conduct on-site survey and assessment at the enterprise

4. Complete post-assessment documentation

5. Review dossier and issue certificate (if compliant)

6. Perform surveillance assessment every 12 months

7. Conduct recertification assessment (certificate validity: 3 years)

After receiving the assessment results and Certificate of Conformity, enterprises must prepare documentation and submit the conformity declaration dossier to the designated specialized authority (Department of Construction in the province/city where the enterprise is registered).

Basic dossier includes:

• Conformity declaration form (Form No. 2 – CBHC/HQ, Appendix III of Circular 28/2012/TT-BKHCN)

• Certified copy of the Certificate of Conformity, including the CR mark sample issued by the certification body

• Certified copy of documents proving production and business activities (Enterprise Registration Certificate / Business Registration Certificate / Investment Certificate / Establishment Decision or equivalent)

ISSQ is always ready to accompany enterprises during integration and development.

Please contact hotline: (+84) 981 851 111 or email: vienchatluong@issq.org.vn | tcvn@issq.org.vn for support.

Published date: 24/01/2024