![]() In both cases, they overlap each other so that water does not penetrate the building as rain falls. Shingles and slates, on the other hand, typically have holes in them and are nailed onto the roof substrate. It is possible to take broken tiles out to replace them, sometimes without any special tools. Tiles are hard and held together by a combination of mounting hooks and gravity–like a jigsaw puzzle. If you have a house in Australia, you probably have either a tile roof, a slate or shingle roof, or a corrugated metal roof. What kind of roof materials are there and how are they different for mounting solar panels? Closeness of the panels to your home is not an absolute requirement: the roofs of sheds, garages, and balconies that stand slightly apart from your house may also provide options for placement. A typical polycrystalline or monocrystalline panelmeasures about 1.6m x 1m, and depending on the capacity (size in watts) of your system, for an average 2 or 3-bedroom home, you should be able to fit enough panels to significantly offset your electricity costs on one, or in a stretch, two parts of your roof. One obvious factor to be taken into consideration when mounting panels on a roof is the amount of space available on it. (Please see this previous entry about tilt and orientation for solar panels in Australia for more information.) Roof space available for solar panels ![]() Many roofs fit this description, but if your roof is less than 20 °, you might need to consider using mounting brackets. Outside the tropics, including through most of Australia, an angle of about 32 ° is ideal, but anywhere between 20 ° and 40 ° should be sufficient for up to 90% operational efficiency. Likewise, the tilt angle of your roof will have a major impact on the amount of solar rays collected by your solar power system. If your array faces due east or west, you will never see more than 85% performance from your panels–not that this should prevent you from going ahead with an install, but it is something that needs to be considered. Anything further south than these will result in a severe reduction in efficiency to your panels. Northeast and northwest-facing roofs are second best orientations after due north, followed by east and west. In the southern hemisphere, due north is the best option, but obviously, not all homes were designed with solar power in mind, and as a result, roof orientations differ drastically from home to home. The orientation of your roof is the first thing to consider when considering whether you want to install a system. Roof orientation and tilt angle for solar panels: In such a case, deciding where to locate and how to arrange your solar panels is a bit easier (provided you have the space, which is probably the case if you’ve got the option for a ground-mounted system) than working around the inherent limitations of your roof’s orientation, tilt angle, material, and available space. ![]() Ordinarily, if you have decided to install a solar power system, it will most likely be mounted on your roof unless you have perhaps become a solar farmer, in which case your system may be ground-mounted. Solar panels on my roof: what to consider (Get a free comparison of solar quotes of the installers who operate in your area!) – Read about Solar Panel Tilt and Orientation in Australia– ![]() This short entry explains the basics of what needs to be taken into consideration when putting a solar array on your roof. For most people who decide to mount solar panels on their roof, a mounting system is necessary. ![]()
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