Purpose Of Enmore Roof Inspection

Provide a roof condition report to N.C.C 2019 and complying with AS 2049 (Roof Tiles), must be installed, fixed and flashed in accordance with the relevant provisions of this part. For more information about our West Sydney roof inspection services, click here.

• Cracked hip and ridge capping pointing not repointed with mortar, and repairs with silicone exposed to ultraviolet light in a number of areas on roof.
• Laboratory testing has shown that only a minor deflection of truly adherent mortar will result in a breakage of either or both ridge or tile upon deflection of the roof. In most instances of mortar bedding and pointing, a truly long-term adherent bond does not exist. Experience has shown that roofs in practice deflect and mortar does inevitably break. It is therefore recommended that mortar bonding should not be used as a minimum mechanical fixing.
• Valley tiles were not minimum 180mm away from opposing valley tiles, valley tiles were not cut neatly in areas
• Valley tiles not fitted with clips in valley gutters
• Broken tiles in a number of areas and silicone patches to numerous cracked roof tiles on roof (many silicone repaired)
• Tiles not overhanging into gutters 50mm and tiles overhanging greater than 50mm in a number of areas
• Roof guttering ponding and not falling to outlets
• There was no sarking layer under Building A tiled roof. Roof pitch is approximately 220. AS 2050 Tiled Roofs Table 1 below shows that where a roof pitch is from 220 to 250 the maximum rafter length without sarking is 5500mm. In this case the main roof pitch was approximately 220 in pitch and the common rafter was approximately 4500 mm in length. Note, most roof tile manufacturers would recommend roof tile sarking.
• There were no weather caps to roof flue pipe stacks
• Cracked ridge and hip capping pointing to a number of areas on roof
• Valley tiles were not minimum 180mm away from opposing valley tiles, valley tiles were not cut neatly in areas
• Broken tiles in a number of areas and silicone patches to numerous cracked roof tiles on roof exposed to ultraviolet radiation (many silicone repaired)
• First row of roof tiles on northern elevation of roof were kicking second row of tiles upward and were not stable under foot and some random rows of tiles in the roof were not aligned to the roof plane
• Tiles overhanging guttering greater than 50mm in a number of areas
• Roof guttering ponding in areas, guttering not falling to outlets and face of guttering buckled in areas
• There was no sarking layer under Building B tiled roof
• There were no weather caps to roof flue pipe stacks

AS 2050—1995 – Installation of roof tiles

1.1 SCOPE This Standard sets out requirements for the placement and fixing of concrete and terracotta roof tiles of the types specified in AS 2049. The fixing methods described in this Standard apply only to roofs of buildings which are intended for domestic, commercial or light industrial purposes This Standard applies only to roofs with a pitch of 15° or greater.

2.4 FIXING SYSTEMS

2.4.1 General Fixing systems may comprise, either singly or in a combination, mechanical fastenings such as, clips, nails, screws, adhesives, fillers and cement mortars.

Irrespective of which fixing system and where it is used, the applicable requirements of AS 1170.1, AS 1170.2, AS 1170.3 and AS 4055 shall be satisfied.

3.5.1.2 Roof tiling

(a) Roof tiles, complying with AS 2049, must be installed, fixed and flashed in accordance with the relevant provisions of this Part.
(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.
(c) Fixings for roof battens and batten sizes must comply with Part 3.4.3.
(d) All tiled roof flashings, ridge and hip tiles must be installed in accordance with Figure 3.5.1.2

2.4 FIXING SYSTEMS

2.4.1 General Fixing systems may comprise, either singly or in a combination, mechanical fastenings such as, clips, nails, screws, adhesives, fillers and cement mortars.

Irrespective of which fixing system and where it is used, the applicable requirements of AS 1170.1, AS 1170.2, AS 1170.3 and AS 4055 shall be satisfied.

Roof tiles AS 2050 Installation of roof tiles

3.3.5 Eaves tiles Eaves tiles shall overhang the fascia or tilting batten by an amount sufficient-
(a) to ensure that water discharges into the gutter; and
(b) to permit replacement of the gutter.

NOTE: This will usually mean an overhang of about 50 mm ±15 mm.

AS 3500.3 – 2003 Stormwater drainage

4.8 EAVES GUTTERS

Eaves gutters shall be installed as follows:

(a) Gradients Deviations from nominal gradients shall be smooth and not cause permanent ponding

AS 2050—1995 – Installation of roof tiles

1.1 SCOPE This Standard sets out requirements for the placement and fixing of concrete and terracotta roof tiles of the types specified in AS 2049. The fixing methods described in this Standard apply only to roofs of buildings which are intended for domestic, commercial or light industrial purposes This Standard applies only to roofs with a pitch of 15° or greater.

2.4 FIXING SYSTEMS

2.4.1 General Fixing systems may comprise, either singly or in a combination, mechanical fastenings such as, clips, nails, screws, adhesives, fillers and cement mortars.

Irrespective of which fixing system and where it is used, the applicable requirements of AS 1170.1, AS 1170.2, AS 1170.3 and AS 4055 shall be satisfied.

3.5.1.2 Roof tiling

(a) Roof tiles, complying with AS 2049, must be installed, fixed and flashed in accordance with the relevant provisions of this Part.

(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.
(c) Fixings for roof battens and batten sizes must comply with Part 3.4.3.
(d) All tiled roof flashings, ridge and hip tiles must be installed in accordance with Figure 3.5.1.2