By Muriel Sylvestre. Bathroom Lighting. Published at Wednesday, February 14th, 2018 - 08:24:58 AM.
our bath should be bright and clean, so ample overhead and task lighting are key. But bathrooms are now a room in the house where people are spending a lot more time, so you’ll also want the ability to create an atmosphere that’s relaxing and spa–like. Having flexibility to adjust the lighting is really important, which is why I put dimmers here just like I do throughout the house.
But as the bathroom increasingly becomes a place to relax and recharge, complete with steam shower and spa tub, the lighting requires extra thought. And when it's done right, the payoff is great. After all, this is the room where you start and end your day.
For effective bath lighting of any sort, it’s smart to pay attention to the CRI (color rendering index). A number of 100 is ideal but hard to find. Anything over 80 will allow people to see colors fairly accurately. Finally, don’t forget to specify the color temperature, expressed in degrees Kelvin (K). A 2,700K lamp is about the same warm yellow light as an incandescent bulb, and many clients prefer them. Jumping up to a 3,000K lamp makes a whiter light, still warm, that’s a good compromise. For residential use, 3,500K is about as cool a color as I’d recommend—it’s particularly good in closets, where you need accuracy for color matching when choosing clothing. Many clothing stores use 3,500K lighting for that reason.
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.
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