How much screen is needed per kilowatt?
Physical dimensions, rather than system output, is the best way to measure
your needs. The geometric shape of the system layout, and if the array is split into separate pieces, are the true determinants. This,
of course, varies greatly from installation to installation. Therefore, we recommended that you calculate a precise number before ordering, as we've seen a single roll be sufficient for an 8+ kW system and yet not enough for a 4 kW. To get this figure, simply calculate a lineal foot measure of the entire system perimeter.
How many clips will I need?
Ordering one box of clips per single roll of screen will almost always
suffice. On average, 50 to 75 are needed per 100 lineal feet, but no two
systems are the same. We sell the two products separately, and not as a kit, to
allow you to order precisely what you need. Long straight runs require fewer clips, while corners require more. The
type of racking used can make a difference as well, most often requiring fewer,
other times requiring more. An experienced installer, looking at the schematic,
can count almost exactly the number of clips needed on a particular
system.
Why is the screen 8 inches high?
This height works on all but the most extremely elevated systems. If you
find that this is too tall, we recommend folding the screen to the height
needed. Folding adds rigidity to the screen — a good thing. Folding also saves
a lot of time and reduces the risk of module damage if trimming after
installation.
Why do you only sell black?
It’s all about aesthetics. We want your systems to look good. And a product
such as this looks best if not seen at all. Black, even when paired with silver
colored modules, is the least visible screen. It blends into the shadows
beneath the modules. It blends in with the roofing material as well, which is
usually dark. Beyond how it looks, the alternative (galvanized screen alone) has no protective
coating and is therefore less durable. The PVC coating gives added corrosion
resistance for extremely harsh locations such as seaside installations.
Does the system work with any module? The system works with framed modules from almost any manufacturer. What is needed is a frame with a lip around the entire bottom edge, where it rests on the racking. There are a few modules which do not have this lip, such as some from Kyocera. These modules do, however, have mounting holes upon which the hook can catch. Frameless, or all glass modules, are not appropriate for this system.
Will it really keep them out?
Our experience shows that the sooner the system is protected the better. If
there is a pre-existing population, it may be difficult to get vermin to move
on. If other nesting spots exist they may choose to stay. Our system does keep
them out from beneath the modules as intended. Most animals will not expend a
lot of energy to find habitat. Once deterrent is in place, they will move on to
more accessible areas.
Why do pigeons like solar roofs?
Pigeons seem to like the shade and, more importantly, it protects them from
exposure to predators. Composition shingles are the perfect texture to keep
nest building material in place and the stand-off posts make a perfect anchor.
In areas with little other protection, solar modules make a great home while
the rooftop ridges are perfect perches.
Why do squirrels chew the PV wires?
All rodent’s teeth grow continuously, therefore they must chew, chew, chew,
to keep them the proper length. We believe that certain materials or textures
are irresistible. Residential PV puts a bunch of chewy stuff in the shade, up
high where squirrels like to go. You might as well have given them a written
invitation! We hear stories about soy-based wire insulation or tasty oils in it as
well. We’ve never seen any evidence of this and see this idea as speculation
and anthropomorphizing.
How prevalent is the problem?
As the industry and our company continues to grow, we should get a precise
picture of where the problem does and doesn’t exist. We expect that it is
widespread, but in pockets. Newer developments, with fewer trees, next to older
ones with active wild animal populations, are most likely the worst off. Of
course, the more solar a state or region gets, the more likely that a pest
problem will develop.
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