Installation Guide / SolarRoof Tilt Legs
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Code-Compliant Planning and Installation Guide V 1.0 (New Zealand) - Complying with AS/NZS 1170.2-2021 -
- Planning -
Determine Roof slope and Tilt Leg Angle
The PV-ezRack® SolarRoof Tilt Legs system is suitable for rails running perpendicular to the roof slope (including
standard and reverse tilt), and slope up to 10° for rails running parallel to the roof slope.
Determine the Installation Area of Roof
There are 4 different roof zones for tilt leg installation: Internal Zone, Intermediate Zone, Edge Zone and Corner Zone.
Please see diagrams and steps below to define area of each zone.
Step 1. Determine building height (h), width (b) and length (d) – see diagram above;
Step 2. The lowest value between "b x 0.2" and "d x 0.2 is “a” if h/b or h/d ≥0.2;
Step 3. “a” equates to 2h, If both h/b and h/d < 0.2,
Verify Purlin Properties of Building
Please verify purlin properties of building, which could affect the interface spacing. Tilt legs spacing on in the
certification letter is based on steel purlin G450 1.5 mm thick or 35 mm Timber F7 (Pine). For example, if the steel purlin
is less than 1.5 mm thick, the corresponding reduction factor of interface spacing could be applied. Please refer to
generic note 22 of engineering letter for details.
Roof Zones Definition
