Prefabricated hollow walls
Hollow walls are lightweight precast concrete walls constructed from two pre-cast walls, each ±6 cm thick. On site, these walls are filled with fresh concrete and provided with joint reinforcement to form one solid, watertight structure. These walls combine efficiency, strength and insulating properties and are ideal where full walls are impractical due to weight or lifting capacity, such as in basements or certain floors.
Hollow walls: construction and properties
The structure consists of two predals placed on top of each other. The reinforcement of the first predal is embedded in the fresh concrete of the second predal, creating a strong, one-piece structure. This system provides:
In the heart of Zwijndrecht, the Binnenplein is undergoing a major redevelopment into a green and accessible urban area with a distinct social function.
The Ensemble is a large-scale multifunctional building project in Amsterdam-Zuidoost. Within this iconic project, C-concrete realized precast concrete elements that contribute to an efficient construction process.
The expansion of Campus Drie Eiken in Wilrijk, home to 10,000 students, researchers and staff, includes new infrastructure for the University of Antwerp.
Brussels Airport's new P30 parking tower has been built on Ringlaan in Zaventem. With its 8 levels and capacity for 2,500 cars, this project is an important link in the further development of the airport infrastructure.
On the Havanas site in the north of Antwerp, Cordeel Belgium and Van Roey nv are building Technical Cluster North: an innovative, sustainable and efficient base of operations for city services.
The company known for "the crane that can do everything" continues to grow rapidly, and on May 13, 2025, we celebrated the start of construction of a brand new high-rise warehouse.
On behalf of SPIE, we are supplying prefab sandwich panels for TenneT for two GIS halls with basement and coupling building.
Amid green, gently sloping surroundings, the new AZ Jan Portaels forms a natural connection between city and landscape.
C-concrete, commissioned by Cordeel Belgium, on behalf of the ROCO consortium, is collaborating on the "Yard of the Century" in Antwerp for the Oosterweel connection.
Some projects require solutions that are fully compatible with the design. With precast customization, we create concrete elements that meet your exact requirements.
Solid walls are the solid foundation of many building projects. Extreme precision, tailored to the technical requirements of each building.
A warm look, a robust skeleton, one smart solution. With hybrid floor slabs, C-concrete combines the best of both worlds.
Our precast exposed concrete sandwich panels combine concrete and insulation in one seamless unit.
When you are looking for sturdy and reliable flooring solutions, predallen are the perfect choice.
Hollow concrete walls are lightweight, self-supporting precast elements that offer excellent insulation and sound absorption properties.
Frequently asked questions
about hollow walls
Do you have questions about hollow walls? Here you will find answers to the most common questions that can help you make the right choice for your construction project.
