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Originally Posted by poppa smurf
sorry to throw another piece of confusion into the mix.......to try and explain racking I'll put it like this.....
ideally your roof that you are planning to place your panels on should be as close as possible to 32 degs in order to gain the most from your panels
if your roof is flat or even facing the opposite direction then a set of racks (a frame designed to hold the panel to the correct angle and orientation) will be employed
the usual construction is of aluminium and one set of racks per panel.........I have however started to see steel racks being employed that can hold two or more but as the racks get bigger they are harder for the installers to handle
most standard houses do not need racks as the angle is acceptable
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Ok i thought you were reffering to landscaping or angling of panels.
My roof is an optimal slope tile roof but there is still racks involved to mount the panels to. In this day and age there should be no one installing without as the kits are actually very cheap $12000 on average or a quarter the price of panels installed.
Tilting and landscaping arrays im sure would at the most double the price.