Southport 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 and Manufacturer’s Instructions. Provide recommendations to extend longevity.

Key Points: Class 1 &10 Buildings BCA Volume 2 – 2010 3.5.1.2 Roof tiling
(a) Roof tiles, complying with AS 2049 (Roof Tiles), must be installed, fixed and flashed in accordance with the relevant provisions of this part

Inspection Site Gallery

Findings & Recommendations In Southport Roof Inspection Report

Area 1

On inspection of the roof the concrete roof tiles appeared to be in good condition however on inspection of the solar panel frame the following was observed:

  1. Where all solar panel frame brackets penetrated through roof tiles there was peeling/breakdown to sealant detail and no rubber bracket boot/s or flashing/s barrier covering were protecting the brackets and sealant detail from direct ultraviolet light and weathering
  2. It was observed the sealant that had cracked around the solar panel frame bracket detailing had been resealed with black coloured sealant in most areas

Normative/Informative provisions

AS 3500.3 Stormwater drainage 2.8.1.2 Sealants
Sealants, including caulking compounds and tapes, shall:
(a) be neutral cure;
(b) where exposed above ground, be resistant to ultraviolet radiation;
(c) have the appropriate range of service temperatures for the location;
(d) have positive adhesion to and compatibility with the materials being jointed; and
(e) where applicable, retain flexibility throughout the service life.

4.13.2.2 Sealant
Sealant joints shall be used in conjunction with mechanical connections or fasteners as specified in AS/NZS 2179.1, spaced at not more than 40 mm centres.

The sealant shall be sandwiched between clean surfaces of the components of the joint to ensure a positive seal and to protect the sealant from exposure to ultraviolet radiation. To ensure complete cure of silicone rubber sealants, the width of sealant bead, when compressed, should not exceed 25 mm.

AS2904 1995 Damp proof courses and Flashings
4.5 Flashing
Barrier of impervious material, built-in to prevent moisture movement to any part of a
building requiring protection (usually the part below it). It includes a waterproof strip
barrier around an opening in a wall or, at a roof junction, or at a roof penetration to prevent the ingress of water to the inner parts of a building

Area 2

On inspection of all solar panel PVC conduit penetrated through roof tiles the following was observed:

  1. Where all solar panel PVC conduit penetrated through roof tiles there was peeling/breakdown to sealant detail and no rubber bracket boot/s or flashing/s barrier covering were protecting the brackets and sealant detail from direct ultraviolet light and weathering
  2. It was observed the sealant that had cracked around the solar panel PVC conduit roof penetrations and most other PVC conduit roof penetrations had been resealed with black colored sealant in most areas

Normative/Informative provisions

AS 3500.3 Stormwater drainage 2.8.1.2 Sealants
Sealants, including caulking compounds and tapes, shall:
(a) be neutral cure;
(b) where exposed above ground, be resistant to ultraviolet radiation;
(c) have the appropriate range of service temperatures for the location;
(d) have positive adhesion to and compatibility with the materials being jointed; and
(e) where applicable, retain flexibility throughout the service life.

4.13.2.2 Sealant
Sealant joints shall be used in conjunction with mechanical connections or fasteners as specified in AS/NZS 2179.1, spaced at not more than 40 mm centres.
The sealant shall be sandwiched between clean surfaces of the components of the joint to ensure a positive seal and to protect the sealant from exposure to ultraviolet radiation. To ensure complete cure of silicone rubber sealants, the width of sealant bead, when compressed, should not exceed 25 mm.

AS2904 1995 Damp proof courses and Flashings
4.5 Flashing
Barrier of impervious material, built-in to prevent moisture movement to any part of a
building requiring protection (usually the part below it). It includes a waterproof strip
barrier around an opening in a wall or, at a roof junction, or at a roof penetration to prevent the ingress of water to the inner parts of a building

Area 3

On inspection of the roof space the following was observed:

  1. There was a bucket set directly below the western roof solar panel PVC conduit penetrating the roof tile and sarking to catch roof storm water migrating into the roof space
  2. Silicone and tape had been adhered to the sarking at the PVC pipe penetration above bucket into the roof

Note: the western roof solar panel PVC conduit roof penetration is directly in line with water flowing from the western valley guttering

Area 4

On inspection of the ceiling (below item 3 above) the following was observed:

  1. The ceiling plasterboard was water marked/stained and paint bubbling

Southport Roof Inspection Conclusion & Recommendations

Conclusion:

  1. There was peeling/breakdown to sealant detail of the bracket/tile detail to the roof solar system and there were no rubber boots or flashing barrier covering protecting the bracket/tile detail and sealant from ultraviolet light and direct weathering
  2. There was peeling/breakdown to sealant detail of the PVC conduit/roof tile detail and there were no rubber boots or flashing barrier covering protecting the PVC conduit roof / tile penetration detail from ultraviolet light and direct weathering
  3. There was a bucket set directly below the western roof solar panel PVC conduit penetrating the roof tile and sarking to catch roof storm water migrating into the roof space
  4. There was paint bubbling marking/staining to the plasterboard ceiling directly below the bucket placed in the roof space and the western roof solar panel PVC conduit penetrating the roof surface above

Recommendation:

All solar panel roof frame brackets and conduit penetration sealant detailing to the roof are subject decomposition and breakdown as described and all solar panel roof penetrations should be suitably detailed with rubber boots or flashings and sealant having positive adhesion to and compatibility with the materials being jointed sandwiched under the flashings to protect all roof solar panel roof tile penetrations and sealant from ultra-violet/weathering breakdown.

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