A building system designed around how buildings come together.
ISB® is an integrated building system that brings structure, insulation and construction logic into one coordinated approach — designed to support efficient, adaptable building projects.
Wall and floor elements designed as part of one coordinated system.
Adaptable to different architectural concepts and project requirements.
Architecture, engineering and system planning can develop together.
Built for the realities of Spain.
Building performance is more than structure alone. Heat, fire, acoustic comfort, seismic conditions and long-term durability all influence how a building performs in the Mediterranean environment. ISB® brings these considerations together within one integrated building system.
Thermal performance
The wall and floor system can be configured as part of the building envelope to support thermal performance appropriate to local project and climate requirements.
Acoustic comfort
Wall and floor assemblies allow acoustic performance to be addressed as part of the complete building design — including airborne and impact-noise considerations.
Fire-conscious construction
Material selection and the reinforced structural concept provide a strong basis for fire-performance design — increasingly relevant in Mediterranean building environments.
Structural resilience
ISB® combines permanent formwork elements with a designed reinforced concrete structure, allowing structural requirements — including seismic and wind actions — to be considered within the engineering design.
Moisture management
The building envelope must manage heat and moisture together. Vapour behaviour and compatible layer build-ups are considered as part of the complete wall and floor specification.
Integrated building system
Walls, floors, reinforcement and structural connections are developed as parts of one coordinated system rather than isolated construction components.
ISB-PHC-250 is supported by technical documentation covering wall and floor elements, reinforcement and key structural connection details. Project-specific performance and structural requirements are defined during engineering and specification.
What ISB® actually is.
ISB® is not a catalogue of predefined houses. It is a coordinated building system based on compatible wall and floor elements that become part of the structural concept of an individual building.
Architecture defines the project. ISB® provides the building logic behind it.
Wall elements form the vertical structure.
The ISB® wall element provides a defined structural geometry that can be integrated into the architectural and engineering design of the building.
Standardised element logic provides a clear basis for system planning and detailing.
Elements are coordinated according to the architecture, openings and structural requirements of the project.
The wall is not treated as an isolated component, but as part of the complete building system.
Floor elements continue the system horizontally.
The floor element extends the same coordinated building logic into horizontal structures, allowing wall and floor geometry to be considered together during system planning.
Wall and floor components are considered together rather than as unrelated construction layers.
Junctions between vertical and horizontal elements form part of the technical design of the system.
The system develops from individual elements into the coordinated structure of the complete building.
One system. One coordinated structural logic.
The system supports the architecture — not the other way around.
ISB® is designed to work behind the architectural concept. The system provides structural logic and coordinated building elements, while the final form, proportions and visual character of the building remain project-specific.
This allows architects and developers to work with different design languages without reducing the project to a predefined building type.
Architecture comes first
The design concept, spatial organisation and architectural expression define the project.
The system adapts
ISB® elements and structural planning are coordinated around the requirements of the building rather than forcing a fixed layout.
Different styles, one system
Contemporary, Mediterranean and more traditional architectural approaches can all be developed with the same underlying system logic.
Design and engineering connect
Architectural decisions and structural requirements can be coordinated early, helping create a clearer route from concept to construction.
ISB® provides the construction logic behind the project. The architecture gives the building its identity.
A building system becomes valuable when it works within the project.
Applying ISB® in Spain means more than supplying structural elements. Each project must connect architecture, engineering, system planning and construction within its specific location and project requirements.
The objective is a coordinated route from the first design decisions to a buildable structural solution.
Designed for the project.
Coordinated for Spain.
ISB® does not replace the architect, engineer or contractor. It provides a structural system around which the relevant professional disciplines can coordinate their work.
Multiple professional disciplines.
One coordinated building route.
Start with the building and its location.
The project begins with its architectural brief, site, intended use, scale and local requirements — not with a predefined ISB® building.
Develop the architectural concept.
Layout, form, openings and architectural expression remain project-specific. The building system is coordinated around the design as it develops.
Translate design into structural logic.
Architectural requirements are connected with engineering, element planning and the technical interfaces required for the ISB® structure.
Connect planning with execution.
The coordinated system information provides the basis for production, project preparation and integration with the construction process in Spain.
Catral brings the system into a real Spanish project context.
The Catral project demonstrates how architecture, site conditions and ISB® system planning can be brought together within a residential project in Spain.
It is not a standard house model. It is a project-specific application of the building system.
10+1 advantages of an integrated building system.
The value of ISB® lies not in one isolated feature, but in the way structure, planning, construction logic and architectural flexibility can work together within the same project.
The result is a system that can support very different building concepts while keeping the underlying structural logic coordinated.
Integrated wall + floor system
Vertical and horizontal structural elements form part of one coordinated building system rather than separate construction concepts.
Architectural flexibility
Contemporary, Mediterranean and more traditional architectural expressions can be developed around the same system logic.
Project-specific engineering
Structural requirements can be designed around the actual building, site conditions, intended use and project-specific loads.
Thermal performance by design
Thermal performance can be considered as part of the wall, floor and envelope specification from the early design stage.
Fire-performance potential
The system materials and reinforced structural concept provide a strong basis for project-specific fire-performance design and specification.
Seismic & wind design
The reinforced concrete structural concept allows seismic and wind actions to be considered as part of the engineering design for each project.
Compact structural wall
The 250 mm structural system can help reduce overall wall thickness compared with thicker conventional build-ups, supporting efficient use of internal floor area.
Extensions & additional floors
The system can be relevant not only for new buildings, but also for extensions, additions and selected redevelopment scenarios.
Coordinated construction process
Architecture, engineering, system planning, production and construction can be connected within one structured project route.
Repeatable system logic
Element geometry and connection principles can be standardised and repeated, while the final building remains project-specific.
Efficiency can create value beyond construction cost alone.
Reduced structural complexity, compact wall construction and a coordinated project process can create economic advantages through material use, construction planning and usable floor area.
The actual economic result remains project-specific and depends on design, specification, location and construction conditions.
Detailed system components, connection principles, structural documentation and project-specific technical performance belong in the Building System and Technical sections, where each topic can be supported by the relevant design and technical information.
Explore the Building System