What is the Thai Industrial Standard (TIS) 77-2565 for clay bricks? Why does the government specify this specification?
Red brick TIS 77-2565 These are ordinary construction bricks that have been certified according to the latest Thai Industrial Standard (replacing the old TIS 77-2545). They undergo stricter quality control than typical red bricks on the market in three main areas: Accurate dimensions, Compressive Strength and Water absorption rate
These properties have made this brick a key material specified in the Terms of Reference (TOR) of government projects, Department of Public Works projects, and private sector projects requiring higher-than-normal wall strength to reduce the risk of future cracking.
What is TIS 77-2565 standard?
- product: Ordinary building bricks (according to TIS 77-2565)
- standard: TIS 77-2565 (Latest version, effective March 30, 2023)
- Dimensions (W x D x H): 4 x 6.5 x 14 cm.
- Quality level: Grade B quality.
- Amount used (for a 6.5 cm thick wall): ~85-90 blocks per square meter
- Amount used (for a 4 cm thick wall): ~120-130 blocks per square meter
Key features of the Thai Industrial Standard (TIS) 77-2565 brick (size 4x6.5x14 cm).
1. Project Approved.
These bricks are manufactured according to the Thai Industrial Standard (TIS) 77-2565 (new version), ensuring they meet the TIS (Thai Industrial Standards Institute) criteria for compressive strength and water absorption. They are suitable for submitting specifications for government projects and other government works.
2. Precise dimensions for exposed masonry work.
With dimensions of 4x6.5x14 cm and minimal deviation (according to Thai Industrial Standards), it is ideal for exposed masonry work requiring precision and beautiful, consistent mortar grooves.
3. Strong and capable of withstanding real compressive forces.
These bricks have undergone lab testing to ensure they are strong and durable according to the specified quality class (Class B) and safe for wall structures.
Applications
- Exposed wall construction requiring aesthetic appeal and high standards.
- Public and private construction projects that specify specifications according to TIS 77-2565.
- Partition walls that require strength and precise dimensions.
- Construction work requiring exceptional precision.
Frequently Asked Questions (FAQ)
reply: TIS 77-2565 is a revised standard that replaces the 2002 version. It updates testing methods and quality criteria to align with current manufacturing technologies, resulting in bricks that are more durable, stronger, and safer.
reply: Depending on the method of construction:
Construct a 6.5 cm thick wall (exposed seams): Use an approximation. 85-90 blocks per square meter.
Construct a 4 cm thick wall (exposed seams): Use an approximation. 120-135 blocks per square meter. (Calculated including standard mortar joint width of 1-1.5 cm.)
reply: TIS 77-2565 This is the latest Thai Industrial Standard (TIS) for "ordinary building bricks," which... This replaces TIS 77-2545 (old version). Effective March 30, 2023, the testing criteria have been updated to be more current.
reply: We have everything you need. We can prepare product manufacturing license documents (TIS standard), test results from reputable institutions, and product catalogs so that contractors can immediately submit them for approval to the project owner or site supervisor.
reply: These 4x6.5x14 cm bricks, certified with the Thai Industrial Standards Institute (TIS), are designed for applications requiring high precision and standards, such as exposed masonry in projects or walls with specific specifications. They are not designed for fast construction like larger bricks.
Comparison Table: Traditional Thai Bricks (TIS 77-2565) (AY Contento) vs. General Bricks
Comparison topics | Traditional Thai bricks (TIS 77-2565) (AY Contento) | Common red clay bricks (as found in the market) |
Reference standards | TIS 77-2565 (Latest Version) | Most of them do not have Thai Industrial Standards (TIS) certification. |
Compressive strength | High (meets standard test criteria) | Not specified / Below standard |
Water absorption | Keep within acceptable limits (walls don't get easily damp). | No control (risk of paint peeling/mold). |
Size and shape | Minimal error, perfect alignment, easy to set up. | Uneven size, difficult to build, wastes cement. |
Certification document | Licensed to do so + test results. | Usually no attachments are included. |
Usage | Government offices, schools, high-rise buildings | Typical residential house, fence. |
Transportation
- 6 wheel truck
- 10 wheel truck
- 18-wheel truck (trailer)
Please inquire about the price of clay bricks conforming to Thai Industrial Standard (TIS) 77-2565.
For customers who want special prices for projects, please contact us through the following channels:
- Phone number: 083-024-3351
- LINE: @aycon
- Website www.aycontento.com
Red Brick calculation program







chic –
Quality grade B is hard to find. Free shipping for orders of 10,000 pieces.