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Firewall System

The Litecrete Firewall system consists of Litecrete 150mm thick solid walls, with tongue and groove vertical joints and also includes a specific proprietary sealant for both the exterior and interior sides of the joints, thereby allowing it to be used in applications where a demonstrated fire performance is required.

The fire-rated system can also be used as a complete and finished wall system in its own right. A BRANZ test (FR 3524) using 150mm thick Litecrete panels achieved a 240 minute fire-resistance rating. 

Key Features

Standard 150mm thick Litecrete Firewalls offer:

  • Fire-resistance rating of 240/240/240.
  • Associated acoustic systems from STC 47 to STC 60.
  • Standard panels up to 7-8 metres high x 3.5 metres wide (other sizes based on design parameters).
  • Rapid installation.
  • Half the weight of normal concrete.
  • Safer environment; Litecrete is fire resistant, non-toxic, mould and mildew resistant.  
  • Rot-proof, strong, permanent. 
  • Built-in insulation provided by the pumice aggregate provides a low humidity environment and ensures energy savings; warm in winter, cool in summer. 
Scope of Use

Suitable for applications where a demonstrated fire performance is required. The fire-rated system can also be used as a complete and finished wall system in its own right. 

All Litecrete applications are subject to specific engineering design by a registered structural engineer (not by Litecrete) prior to lodging a Building Consent application.

Statement of Building Code Compliance

The Litecrete Construction System, which is subject to specific engineering design, meets the following performance requirements of the building code:

  • Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4 for the relevant conditions in B1.3.3. a,b,f,g,h,i,j
  • Clause B2 DURABILITY: Performance B2.3.1, 50 years
  • Clause C3 SPREAD OF FIRE: Performance C3.3.5
  • Clause E2 EXTERNAL MOISTURE: Performance E2.3.2, E2.3.3, E2.3.6
  • Clause E3 INTERNAL MOISTURE: Performance E3.3.1
  • Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1
  • Clause G6 AIR & IMPACT SOUND: Performance G6.3.1
  • Clause H1 ENERGY EFFICIENCY: Performance H1.3.1, H1.3.2 
In-Service History

Litecrete (NZ) Ltd is a wholly owned subsidiary of Wilco Precast Ltd, Papakura, a premier precast concrete manufacturer, which has been manufacturing precast concrete for over 50 years. 

Other Performance Attributes
  • Litecrete can offer cast-in surface textures and rebates similar to standard precast concrete. These can range from simple diagonal and vertical lines up to intricate patterns using rubber formliners. Rough-sawn timber textures are currently in vogue, however there is panel width limitations due to the extra suction experienced when de-moulding the panels off the timber planks.
B1 Structure compliant
B2 Durability compliant
C Protection from Fire compliant
Protection from Fire
E2 External Moisture compliant
External Moisture
E3 Internal Moisture compliant
Internal Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
G6 Airborne and Impact Sound compliant
Airborne and Impact Sound
H1 Energy Efficiency compliant
Energy Efficiency
BRANZ Appraised
BRANZ Appraised
Test Results
Test Results
CAD/PDF (link to page on supplier website)
Acoustic Design Brochure
Building Code Compliance
Material Safety Data Sheet
Product Properties
Test Results
Architectural Design Catalogue


Firewall Design Brochure

Litecrete is a lightweight precast concrete system which can be used for commercial and residential construction.

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