What it includes
Risk assessment, protection level, air-termination system, mesh or rods, down conductors, test joints, earth electrodes, equipotential bonding, surge protection, plans, sections and details.
Interception, conduction and dissipation
Lightning protection design in Lisbon (SPDA)
Lightning protection designed as a complete system: roof protection, down conductors, earthing, equipotential bonding and internal protection.
Risk assessmentExternal protectionInternal protection and earthing
Coordinated protection
From roof to ground, every path matters
A lightning protection system (SPDA) aims to intercept a strike, conduct it along defined paths and dissipate the current into the ground, reducing risks to people, the structure, installations and equipment. Design starts with assessment of the risk and building characteristics.
External protection must be coordinated with earthing, equipotential bonding and surge protection measures. Metalwork, rooftop equipment and separation distances are part of the analysis.
Key benefits
- A solution matched to the building's actual risk
- Defined, accessible down-conductor routes
- Earthing coordinated with construction
- Reduced dangerous potential differences
- Internal protection coordinated with switchboards and services
Where it applies
- Commercial and retail buildings
- Multi-unit residential buildings
- Warehouses and industrial premises
- Buildings with rooftop equipment
- Sensitive or isolated installations
Technical overview
Design considers air-termination geometry, number and distribution of down conductors, electrical continuity, separation distances, conductor sizes and materials, earthing resistance and layout, equipotential bonding and surge protective device coordination.
A complete system
Air terminals, down conductors and earthing work together
Roof protection alone is insufficient without continuous down-conductor paths and an earth system capable of dissipating current. The design locates test joints, connection points and inspection pits to allow installation, verification and maintenance.
Air terminationDown conductorsTest jointsRing earth electrodeSurge protective devices
Frequently asked questions
Before specifying protection
Does every building need lightning protection?
The need and level of protection must be assessed under the applicable framework and risk assessment, considering use, construction, contents, location and consequences.
Is earthing included in the design?
Yes. The solution must coordinate air termination, down conductors, earth electrodes, equipotential bonding and inspection points.
Does the design include surge protection?
It can include coordination of surge protective devices in relevant switchboards and services, aligned with the electrical design.
Initial assessment
Assess the risk before construction.
Send us the location, plans, sections, roof layouts and intended use of the building.