Attic Trusses Site Infill Detail

Infill in attic trusses is required in areas where a staircase, dormer or Velux window are positioned and these features are greater than 600mm wide.

Included in this guide:

• Typical details for infill timbers to be used in attic trusses
• Positioning of purlin and roof support timbers
• Typical support detailing for purlins and ridges
• Section sketches showing loose timber construction

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