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Kalzip® Overclad Roofing Systems

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OVERCLAD ROOFING SYSTEM

With the Kalzip standing seam system acting as the waterproof layer

Kalzip overclad systems enhance building aesthetics by integrating various cladding materials—such as slate, wood, or large-format composite panels—with the Kalzip standing seam system serving as the waterproof layer. This combination allows for diverse and durable design possibilities.

The advantages of overclad roof systems:

Versatile design options leveraging the benefits of Kalzip roof structures
Non-penetrative installation maintains roof integrity
Third party DIBt approval Ref Z-14.4-560-Fastening-clips-for-Kalzip-standing-seam-profiles ensures system compatibility and safety
Can be dismantled at any time to change or modernise the appearance according to our installation guidelines

Being “on request” ensures we provide the correct document version relative to the project timeline – completed, in process or prospective. Contact Us

Overclad construction

WITH COMPOSITE PANELS

1. Kalzip aluminium profile panel, 2. Composite panels, 3. Kalzip composite clip, 4. Fastening clamp, 5. Thermal insulation, 6. Vapour barrier, 7. Trapezoidal profile, 8. Fastening of composite panels

Architecture for the entire building envelope

The advantages of the overclad roof structure:

Separation of Function as the waterproofing and aesthetics work independently
Design Flexibility as any visual finish can be achieved without compromising performance
Long-Term Durability as the Kalzip outer sheet delivers a 40+ year lifespan as per the Kalzip BBA certificate Ref 98/3481 Product sheets 1 & 2
Planning Compliance as it satisfies heritage and conservation requirements
Lightweight Construction as it keeps overall roof loads manageable
Low Maintenance as the decorative layer sits under no water pressure reducing leak risk
The following documents are available on request for the Kalzip system
- Declaration of Performance (DoPs)
- EPD’s
- BBA Agrément® Certificates.
- Product Safety & Handling Information
- DIBt Approvals

Being “on request” ensures we provide the correct document version relative to the project timeline – completed, in process or prospective. Contact Us

Applications of overclad roof Structures:

Hotels: The system is ideal for hotels where a premium aesthetic such as stone or composite panels is required to match the buildings character while the Kalzip ensures a reliable and long lasting waterproofing layer.
Industrial and Commercial Buildings: Warehouses, factories and retail centres benefit from the system as the decorative layer upgrades the visual appearance while the Kalzip ensures long term weathertightness.
Residential Developments: The system can be applied to apartment blocks and housing developments where a traditional roof appearance such as tiles or stone is desired alongside modern waterproofing performance.
Sports and Leisure Facilities: Swimming pools, sports halls and leisure centres benefit from the low maintenance nature of the system as the Kalzip layer handles all waterproofing demands regardless of the decorative finish above.
Museums: Museums benefit from the system as it allows a high quality and architecturally distinctive finish while the Kalzip layer provides the long term protection that sensitive collections and exhibitions demand.