Blacktown Roof Inspection Report Purpose:

Provide a roof condition report to N.C.C 2016 Vol.2, AS 1562.1, AS 1562.3, SA HB 39 2015: The Installation Code for Metal Roofing and Walling as well as manufacturer’s instructions. Provide recommendations to extend longevity.

Inspection Site Gallery

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Findings & Recommendations In Blacktown Roof Inspection Report

  • Roof sheet length has exceeded Manufacturer’s Instructions for the given roof pitch. Corrugated sheet length greater than 10m requires a minimum pitch of 12 degrees. Roof pitch shown at 10 degrees. Trimdek / Monoclad sheeting required.
  • Several flashing connections have been identified with minor swarf staining. Non-compliant to SA HB39 refer 3.6. Localised cleaning required.
  • Insulated panels have not been provided fasteners at 1000mm centres to the sheet laps. Refer to manufacturer’s instructions attached. 7000m sheet length shown.
  • Roof sheet underlaps have not been cut back in isolated areas. Potential for drawback due to anti capillary.
  • Fasteners to the ridge capping of the rear shed have been installed from underneath and are reliant on silicone.Recommend providing a 14g screw installed from above.
  • Barge cap flashing to the insulated panel roof has not covered the receiver channel and the timber remains exposed.

Building Code References In Blacktown Roof Inspection Report


3.6 Cleaning Up

Normal installation practices such as drilling and cutting usually leave offcuts and metallic swarf on or around the roof area. These materials and all other debris, including blind rivet shanks, nails and screws are to be cleaned from the roof area and gutter regularly during the installation process as unsightly staining of the surface due to oxidation of the metal particles will result, leading to corrosion and possible failure of the roofing material or futtering. Where practicable, the entire installation should be cleaned down with a blower vax, swept or, alternatively, if a water supply is available, hosed down at the completion of work.

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