The Correct Way to Install Bondek for Maximum Concrete Results

Bondek is a modern material widely used in construction projects, particularly for concrete slabs. Its function as both formwork and positive reinforcement allows Bondek to speed up the construction process while increasing cost efficiency. However, to ensure strong and even concrete casting, Bondek installation must be carried out correctly. Here's a guide.

1. Surface and Material Preparation
Before beginning installation, ensure the substructure, such as steel beams, WF, or reinforced concrete, is level and strong. Clean the area of ​​dust, oil, or dirt that could interfere with the Bondek's adhesion.
Use Bondek with a thickness appropriate to the structural load requirements, generally between 0.75 mm and 1 mm for light to medium-rise buildings.

2. Install Bondek in the Correct Direction
Place the Bondek sheets perpendicular to the direction of the main support beams. This ensures the Bondek optimally transfers the concrete load to the substructure.
Each joint between Bondek sheets should be overlapped by at least 50 mm to prevent leaks during casting.

3. Secure the Bondek with Bolts or Screws
Use self-drilling screws or special metal deck nails to fasten the Bondek to the steel frame.
Ensure each joint is tight and level to avoid gaps. The ideal screw spacing is 300–400 mm, especially at edges or joints.

4. Add Reinforcement Above the Bondek
Although the Bondek already serves as reinforcement, for structures bearing heavy loads, additional reinforcement (wire mesh or threaded iron) is still necessary.
Position the reinforcement with spacers so that it is not directly attached to the Bondek, allowing the concrete to completely envelop the iron.

5. Pour Carefully
Before pouring, ensure there are no leaks at the Bondek joints. Use concrete with the specified slump to prevent it from becoming too runny.
Pouring should be done evenly from one side to the other, while leveling with a concrete vibrator to avoid air pockets.

6. Post-Casting Maintenance
After the concrete hardens, leave the Bondek formwork in place for at least 7–14 days to allow the structure to reach optimal initial strength.
The Bondek does not need to be removed because it serves as a permanent layer supporting the concrete and enhances the appearance of the lower ceiling.

Conclusion
Proper Bondek installation not only affects the strength of the structure but also the time and cost efficiency of the project.
Ensure all stages—from preparation, installation, locking, to casting—are carried out according to procedures to ensure the concrete slab is even, sturdy, and durable.

PT Intisumber Bajasakti (ISBS) provides various sizes of high-quality Bondek suitable for homes, buildings, and large infrastructure projects. All products meet quality standards and are ready to be shipped according to your needs.