Banora Point Roof Inspection Report Purpose:

A roof inspection was requested after extreme weather passed over the area. Owner was concerned about the state of their tiled roofing.  We provided a roof condition report to N.C.C 2016 Vol.2, AS 1562.1, AS 1562.3, SA HB 39 2015. We are also referencing the building code 3.5.1.2: Roof tiling. Where possible, we are also providing recommendations to extend longevity.

Findings & Recommendations In Banora Point Roof Inspection Report

• Water ingress is event related due to the recent weather events. Hallway and lounge have suffered water ingress resulting in damage to the internal ceiling linings. This may be more extensive on the upper side of the ceiling.
• Evidence of deteriorating and loose ridge caps are consistent throughout, which are producing gaps and further failures causing ingress likely.
• Evidence of numerous slipped, damaged roof tiles to all valleys, resulting from lack of tile clips being installed. Valley roof tiles have not been cut to leave 100mm to 150mm channels as per manufacturer’s instructions.
• Debris build-up under the roof tiles and valley, blocking water flow, if not rectified this will lead to ingress. Information regarding installation of roof tile valley is shown below.
• Evidence of damaged roof tiles, which have been previously repaired using silicone, which has no longevity. If not rectified this will lead to future ingress.
• Evidence of previous repairs to the roof due to different coloured tiles.
• Evidence that some valleys and gutters are full of debris and need to be cleaned out to increase longevity.
• There is no sarking present, and the pitch of the roof is approximately 26.2-degrees, as shown. The minimum roof pitch for this design of tile is 20-degree pitch without sarking and 15- degree with sarking.

Conculsion Outlined In Banora Point Roof Condition Report

There are issues highlighted in this report caused by lack of maintenance, repairs, and faults. These issues have been aggravated by extreme recent weather events. There may have been some debris maintenance conducted however more is required. There is no evidence of repointing to the ridge caps. Numerous attempts at repairs to the roof are evident that have only provided a temporary fix. It would be beneficial to have these issues rectified to increase longevity.

Reference Images Used In Roof Condition Report

« ‹ of 2 › »

Building Code References

One of the key tasks of this Banora Point roof inspection was to check compliance with 3.5.1.2, Roof Tiling:

1. (a) Roof tiles, complying with AS 2049, must be installed, fixed and flashed in accordance with the relevant provisions of this Part.
2. (b) Roof tiles on roofs with a pitch of not less than 15 degrees and not more than 35 degrees must be fixed in accordance with Figure 3.5.1.1.
3. (c) Fixings for roof battens and batten sizes must comply with Part 3.4.3.
4. (d) All tiled roof flashings, ridge and hip tiles must be installed in accordance with Figure 3.5.1.2
5. (e) Lead flashings must not be used on any roof that is part of a potable water catchment area.
6. (f) Sarking must be installed under tiled roofs in accordance with Table 3.5.1.1b
7. (g) Where sarking is installed, an anti-ponding device/board must-
   1. Be provided-
      1. On roofs with pitches of less than 20°; and
      2. On all roof pitches where they are no eaces overhand; and
   2. be fixed along the eaves line from the top of the fascia back up the rafter with a clearance of approximately 50mm below the first batten
8. (h) All water discharged from a gutter valley or downpipe onto a tiled roof must be prevented from inundating or penetrating the tiling by the provision of-
   1. a spreader pipe; or
   2. a flashing; or
   3. sarking installed with a minimum width of 1800mm either side from the point of discharge and extended down to the eaves gutter

References were also made to the following building standards:

3.6 Workmanship

The cutting of tiles at ridges, hips, verges and valleys shall be neat and shall present a straight line. Cut tiles at ridges and hips shall be supported in the same plan as adjacent tiling and shall be secured.

NOTES:

1. The pointing should be regular in appearance, and should have uniform colour and texture
2. The pointing should be trowelled off to provide a neat appearance
3. Due to the composition of flexible pointing, some minor surface imperfections are acceptable