General requirements

075347 Wall panels

Unless indicated in drawings, panels shall be produced from the biggest size of timber or panel board manageable for handling. Wall panels for external use may be produced out of specified milled timber capable of resisting weather changes and not absorbing moisture.

The details of construction of external wall panels shall be such that, panels are securely and tightly fixed to supports and each other.

Water drips shall be provided on panel leaves to ensure that no leakage or accumulation of water is formed.

Wall panels for internal use may be free standing panels or panels fixed against other walls.
Panels for interior use may be produced from any one of the following as specified in schedule and shown in detail drawings.

• 
  Tongued and grooved milled timber boards of not less than 80mm width and 15mm thickness.
  
• 
  Open jointed milled timber boards of not less than 100mm width and 15mm thickness.
  
• 
  Block boards with specified plywood veneer exposed surface of less than 20mm thickness.
  
• 
  Flush panel core construction in specified veneer plywood on both faces. The construction of the panel shall comply with the requirements of door construction.
  
• 
  Any of the other joinery construction products dealt with under Specification 074.
  

Panels against walls shall be securely screwed to grounds embedded in walls or backings in sawn or milled timber frames.

Free standing panels shall be erected and securely fixed in accordance with approved shop drawings. Frames and braces not exposed to view shall be sawn straight edge timber frames.
Frames partially exposed to view shall be milled timber finished smooth.
Panel joints against each other or walls shall be covered with milled and molded timber architrave not less than 50mm wide.
Where panels are left open jointed, the joints shall be uniform in width through out the length or height of the panel.