Added Parshields on my new floodlights: Worth it!
Posted 04 December 2012 - 08:54 AM
A little weird, to say the least.
Because where that light is located is convenient for lighting up the stairs to our basement door, which is an area that occasionally floods when it rains really hard, my wife and I decided a floodlight fixture, properly shielded and with an actual switch (!), were in order for that location. I had a floodlight fixture laying around, so my dad and I installed it over Thanksgiving.
I thought I had them aimed "down" enough when I set them up in the daytime, but when I checked them at night again a few days later, I realized that they caused serious light trespass into our neighbor's yard. So I aimed them down some more. What I found really interesting was that even though the light's "hot-spot" (brightest portion of the light output) really appears to be facing very much down towards the ground and not out into the yard anymore, there is a lot of light that still escapes outward.
For example, the second light is aimed at our patio/garage area (also downward). Yet the light reflecting off the Parshield and/or bouncing off the patio flagstone still "bounces" up and easily lights up the side of our garage, casting faint shadows higher than I can reach. Given that the fixture itself is only about 78" to 80" high (it was set low in the first place, and is restricted by an overhang), there is clearly some light still going "up" (unfortunately).
A couple things:
1) It is certainly better than it was. The original bulb was a regular incandescent that created both glare and direct uplighting
2) The majority of the light really does go down, and there is zero glare now
3) I've got a lot more wattage on it now than it had before, perhaps explaining some of this; it was 60W, now it has two 90W bulbs (which I will be swapping out for 45W ones!)
4) We almost never use this fixture anyway
5) The light that escapes up is still insignificant compared to what is going down, and there is plenty of light to see out in the yard without creating light trespass
I guess what I'm saying is, even if you aim a light almost all the way down like this, the Parshields deflect enough light you can still easily see in a wide area outside of that "hot spot" of light. This light easily lets me see to the back of my garage to take out trash - and it is a tandem-length garage.
Parshields work. They're only $25. Plus they look nice!
I'll post some pictures in a few days when I get a chance to take it at various angles, as well as with lower wattage floodlamps, and I'll need to buy some 45W ones.
Posted 08 January 2013 - 05:18 PM
Posted 10 January 2013 - 11:27 AM
Like you, I have other ones around me needing shielding / changing, but one step at a time, right?
Posted 11 January 2013 - 01:11 AM
Posted 18 January 2013 - 11:27 PM
They work very well and are reasonable in price. In my opinion they should be the LAW when anyone installs floodlights.