Purpose Of Ryde Roof Inspection

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 and Manufacturer’s Instructions. Provide recommendations to extend longevity. For more information about our Northern Sydney roof inspection services, please click here.

• Roof sheeting needing cutting back and a lot of debris, off cuts, insulation etc to be cleaned out
• A lot of swarf in this area where roof sheets have been cold cut. As per Hb 39 3.6 this needs rectification
• AS3500.3 – 4.4.3 – Due to roof design the stramit Farlap system is causing the roof sheet at the expansion to slightly raise bringing it under the recommended 1 degree minimum pitch for speed deck ultra. This is resulting in debris / dirt accumulating at the end of the roof sheet which may lead to ponding and accelerated corrosion.
• Swarf evident in sections of the eaves gutter as per Hb 39 3.6 this needs rectification
• There is a 45 metre run of eaves gutter without the provision of an expansion joint which is non compliant to HB39 5.6
• Ponding evident in a number of locations of the eaves gutter, non-compliant to AS 3500 refer 4.5.3.
• A number of downpipe droppers are yet to be installed
• Roof sheets are not folded down in some locations as per Manufacturer’s Instructions
• General note safety wire is installed correctly and in good order
• Roof screw installed through pan for an unknown reason.
• Roof sheet overhang is straight and compliant
• From this photo it appears that the correct installation procedure has taken place with the Stramit Far Lap/ Skylap seal, however, the cut out at of sheet as per process number 3 was not identified. This will be assessed on re inspection.
• Photo to the left shows 500mm from the bottom of the overlap sheet to the top of the underlap sheet . Ampelite typical end detail as per next page showing 200 – 300mm and 75mm Advice sought from Manufacturer as per below correspondence:Unfortunately I can’t predict if this installation will manifest itself into issues down the track, but the probability of leaking at the end lap is increased. I can comment however on the reduction in wind load uplift resistance due to the excessive overhang and overlapping of the translucent sheets. Wind load calculations are made assuming the recommended overhangs will be provided.Regards,
  Andrew Hill
  Ampelite Australia Pty Ltd.
• As per above Ampelite recommendation the bottom row of lap seal tape should be installed 25mm from bottom of the sheet with the second row of tape 150mm away on the upper side of the screw line.
• On the picture opposite the upper tape should be on the other side of the screw line
• It appears that silicon sealant is used in places. It would be more prudent to use lap seal tape as silicone sealants can harden and cure due to exposure to sunlight.
• Oversized holes on bottom sheets evident where full length fiberglass sheets have been installed. Recommended over size rivet with silicone sealant to plug hole.
• Evidence of plastic remaining on ribs. Be sure to remove before signing off.
• Incorrect turn up tool being used resulting in inadequate turn ups / stop ends
• all purlins have been afforded protective purlin strips in accordance with manufacturers recommendations