Petrapanel® AAC Cladding System

The Petrapanel® Cladding System is a cavity-based external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The system consists of autoclaved aerated concrete (AAC) panels (Petrapanels) fixed over extruded polystyrene battens to form a 20 mm cavity. The coating system consists of a minimum 5-10 mm thickness of fibreglass mesh reinforced synthetic resin renders and synthetic resin finishing renders applied to the AAC panels. The render system is finished with an exterior paint system. The plaster finish can be applied to give different texture appearances.

The Petrapanel® Cladding System has been appraised as an external wall cladding system for buildings within the following scope:

• The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1
• With a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
• Situated in NZS 3604 wind zones up to and including extra high.

The Petrapanel® Cladding System has also been appraised for weathertightness and structural wind loading when used as an external wall cladding for buildings within the following scope:

• The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1 with regards to building height and floor plan area.
• Constructed with timber and steel framing subject to specific engineering design.
• Situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

The Petrapanel® Cladding System must only be installed on vertical surfaces (except for tops of parapets, sills and balustrades, which must have a minimum 10° slope and be waterproofed in accordance with the technical literature).

The system is appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills. (The Appraisal of the Petrapanel® Cladding System relies on the joinery meeting the requirements of NZS 4211 for the relevant wind zone or wind pressure.)

Installation of components and accessories supplied by Petros Holdings Ltd must be carried out only by Petros Holdings Ltd approved applicators.

MPT Petrapanel AAC Exterior Plaster System Manual, version 1.1, January 2020

Architectural details

• A_A000 Sheet List 2
• A_A001 AAC Clad System 2
• A_B001 Foundation - Timber Floor 2
• A_B002 Foundation - Timber Floor- Option 2 2
• A_B004 Foundation - Rebated Concrete Slab - Vented 2
• A_B005 Foundation - Bottom Plate 2
• A_C001 Wall - Batten Layout Around Windows 2
• A_C002 Wall - Framing Layout Timber Framing With Battens 2
• A_D001 Junction - Window Head to Jamb - Preparation 2
• A_D002 Junction - Window Head to Jamb 2
• A_D003 Junction - Window Head to Jamb 2
• A_D004 Window - Aluminium Head Detail 2
• A_D005 Window- Aluminium Jamb Detail 2
• A_D006 Window - Aluminium Sill Detail - 2
• A_D007 Window - Jamb/Sill Junction with Corner Soaker 1
• A_D008 Window - Sill Trim - Bottom Corner Detail 2
• A_D009 Window- Flexible Air Seal Detail 2
• A_E001 Soffit - Flush Eaves Gutter 2
• A_E003 Soffit - Slope Soffit with Concealed Flashing 2
• A_E004 Soffit - Reverse Raked - Option 2 2
• A_E005 Soffit - Metal Profile Barge Flashing 2
• A_E006 Soffit - Edge Detail 2
• A_F001 External Corner - Square 2
• A_F002 External Corner - Round 2
• A_F003 External Corner - Junction 2
• A_F004 External Corner - External Corner with Stone Veneer 2
• A_F005 External Corner - External Corner with Vertical Metal Cladding 2
• A_F006 External Corner - Weatherboard Junction 2
• A_G001 Internal Corner - Square 2
• A_G002 Internal Corner- Junction 2
• A_G003 Internal Corner - Internal Corner with NV" Flashing and Weatherboard 2
• A_G004 Internal Corner- Internal Corner with Vertical Metal Flashing 2
• A_G005 Internal Corner - Junction to Concrete Block 2
• A_G006 Internal Corner - AAC to Weatherboard Junction 2
• A_H001 Vertical Expansion Joint 2
• A_H002 Vertical Expansion Joint to Brick 2
• A_H003 Vertical Expansion Joint to Weatherboard 2
• A_H004 Vertical Expansion Joint to Concrete Block 2
• A_H005 Vertical Expansion Joint to Stone Veneer 2
• A_J001 Horizontal Expansion Joint - 2 Storeys or less 2
• A_J002 Horizontal Expansion Joint to Stone Veneer 2
• A_J003 Horizontal Expansion Joint - Inter-storey Drained Cavity - 2 Storeys or greater 2
• A_J004 Horizontal Expansion Joint to Weatherboard 2
• A_J005 Horizontal Expansion Joint to Metal Profile 2
• A_J006 Horizontal Expansion Joint - AAC to Brick Junction 2
• A_J007 Horizontal Expansion Joint - Meshclad Overlap to Masonry 2
• A_K001 Parapet/Capping - Enclosed Desk Balustrade to Wall Junction 2
• A_K002 Parapet/Capping - Capped Flashing Cavity System 2
• A_K003 Parapet/Capping - Parapet Balustrade Wall Timber Framing 2
• A_K004 Parapet/Capping - Parapet Balustrade Wall Batten Layout 2
• A_K005 Parapet/Capping - Parapet Balustrade Wall Primary Flashing 2
• A_K006 Parapet/Capping - Parapet Balustrade Wall Secondary Flashing 2
• A_K007 Parapet/Capping - Parapet Balustrade Wall Secondary Flashing 2
• A_K008 Parapet/Capping - Sloped Flashing Cavity System 2
• A_K009 Parapet/Capping - Plastered Capping to Parapets or Balustrades CW Handrail 2
• A_K010 Parapet/Capping - Plastered Capping to Parapets or Balustrades 2
• A_L001 Roof - Wall Junction- Sloped 2
• A_L002 Roof - Wall Junction - Flat 2
• A_L003 Roof - Stopend Flashing Junction - Roof to Wall 2
• A_M001 Deck - Cantilevered Joists Detail 2
• A_M002 Deck_ Pergola and Deck wall plate 3
• A_M003 Deck - Cantilevered Deck Joist 2
• A_N001 Meter Box - Typical Meter Box Installation Setup 2
• A_N002 Meter Box - Typical Meter Box Installation 2
• A_N003 Meter Box - Meter Box 3D View 2
• A_N004 Meter Box - Wall Section 2
• A_P001 Pipe Penetration - Pipe Penetration Cavity 2
• A_P002 Pipe Penetration - Typical Pipe Penetration 2
• A_O001 Fixing Blocks - For Down Pipes, etc. 2

Always refer to the Appraisal in full and the technical literature.