Reply by Rob

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Posted on Vaulted Ceiling - Fluorescent Lights

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704 posts in 4357 days

#1 posted 11-03-2014 05:45 PM

It will be easier to get a consistent, even light dispersal pattern if all the fixtures are coplanar and evenly-spaced. But if the ceiling has only a slight slope, maybe it won’t make much difference. If you have any ceiling joists running horizontally below the lights, keep in mind that those will cast shadows. Also, the higher you hang the lights, generally the more light you’ll need in order to get the same level of illumination at the floor and your work areas. If you’re putting up the lights yourself and if you get the type of fixture that can be hung by a chain, you can always try hanging them both ways to see which one you like best.

As far as your choice of fixtures and bulbs, consider getting T8 or T5 instead of T12; they produce more light per watt than T12. Typically you replace a 4-bulb T12 fixture with a 3-bulb T8 fixture. T8 will give you the most bang for your buck, and you can run a comparison here:

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