By Véronique Amandine. Bathroom Lighting. Published at Sunday, March 04th, 2018 - 01:45:49 AM.
How much light is needed in the bath? The answer depends on the person and the task they’re performing. For someone just waking up and shuffling in to the water closet, 10 footcandles (fc) might be plenty. After a shower, when it’s time to shave, 100fc is probably needed for better visibility.
This is most easily achieved with a fan/light combination fixture. If the customer wants more light, perhaps to read by, we’ll specify an additional recessed can light in front of the water closet, almost always on a dimmer. Another good trick is to “borrow” daylight via a frosted-glass door or transom windows that allow light but preserve privacy.
Building codes are very strict about lights over tubs and whirlpools. There can be no open or hanging fixtures within 8 feet above the tub, nor for another 3 feet in front of it. Since most bathroom ceilings aren’t more than 8 feet tall, this generally precludes having open or hanging lights above tubs.
People often think one fixture is fine here, but you usually need two. Equal lighting at both ends of a tub is best. With a shower that’s 3×3 ft. or 3×4 ft. you can get away with one fixture, but if it’s larger you’ll need more. And unlike the vanity area, for safety you should place lighting directly over where you stand in the shower.
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