Auchenflower Roof Inspection Report Purpose:

Provide a roof condition report following a Auchenflower roof inspection. References are made to several Australian building standards including N.C.C 2016 Vol.2, AS 1562.1, AS 1562.3 & SA HB 39 2015: The Installation Code for Metal Roofing and Walling. For more information on these building codes, click here. Manufacturer’s Instructions that are referenced are attached to the report. We also provide recommendations to extend longevity.

Findings & Recommendations In Auchenflower Roof Inspection

The roof has reached the end of its serviceable lifespan. Deterioration and corrosion is evident throughout the roof. Evidence of the roof having been resprayed in various areas, which is a temporary repair that traps in moisture, which will lead to more corrosion and future ingress.
Due to previous repairs, roof sheets in various areas throughout the roof are heavily reliant on Wetseal, which is a temporary repair that traps in moisture which will lead to more corrosion and
future ingress.
Evidence of ponding occurring to the roof sheets in various areas, non-compliant to AS 3500.3 refer 4.4.3 as shown. Total drainage required of roof components.
Evidence of a previous repair using silicone and Wetseal to seal the roof flashings to the roof sheets, which does not comply with the manufacturer’s instructions. Wetseal is a temporary repair and tends to trap moisture in, increasing the risk of corrosion. Silicone has no longevity and breaks down under the sun’s UV rays, this is likely to trap in water and lead to ingress.
Cover flashings are noticeably lightweight and are likely to blow up in heavy wind conditions leading to ingress. Also, flashing and cover flashing has insufficient upstand and coverage, noncompliant to SA HB39 refer 5.5 as shown.
Apron flashings have not been provided with a full tray of effective coverage, noncompliant to SA HB39 refer 8.1.4 as shown. Rectifying this issue will stop future ingress and will increase longevity.
Dissimilar metal water runoff through the aircon is evident. If not rectified this will lead to possible failure of the roofing materials, and could lead to corrosion and future ingress.
Apron flashings have not been provided with a full tray of effective coverage, noncompliant to SA HB39 refer 8.1.4 as shown above.
Evidence of barge cap flashings which have not achieved the 150mm of effective coverage, non-compliant to SA HB39 refer table 8.1.4 as shown above.
Evidence of all pipe penetrations which have been previously repaired using Wetseal, lapped against the flow of water, are heavily reliant on silicone and are showing signs of deterioration, noncompliant to SA HB 39 refer 8.2 and 8.6 as shown. All penetrations must be fitted with a synthetic Dektite as per manufacturer’s instructions. Also potential for future ponding, corrosion, and ingress, given the low pitch of approximately 0.3 to 1.3 degrees. It would be beneficial to install a tray flashing with the Dektites in diamond formation on top to allow total drainage.
Exposed copper piping and dissimilar metal water runoff is evident. If not rectified this will lead to possible failure of the roofing materials, and could lead to ingress. Copper piping needs to be taped/ covered to prevent corrosion from occurring.
Electrical conduit cable has been previously repaired using Wetseal and silicone and is showing signs of deterioration, also potential for future ponding, corrosion, and ingress, given the low pitch of approximately 0.3 to 1.3 degrees. It would be beneficial to install a tray flashing with the electrical conduit cables on top to allow total drainage.
The roof pitch varies from 0.3 degrees to 1.3 degrees, however this design of roof sheet minimum roof pitch is 1 degree.

Conculsion Outlined In Auchenflower Roof Condition Report

Deterioration and corrosion is evident across the whole of the roof. Numerous attempts at repairs to the roof are widespread and have only provided temporary fixes. The roof and its components have reached the end of their serviceable lifespan and the most feasible option in this case is a full replacement.