By Jean Mathys. Bathroom Lighting. Published at Thursday, January 25th, 2018 - 13:45:31 PM.
Downlights are perhaps the worst type to use for task lighting in the bath, although they are fine for ambient or accent lighting. Also, downlights are usually incandescent, which is the least energy-efficient form of lighting-—only 10% of the energy used by a typical incandescent bulb comes out as light, the other 90% is wasted heat.
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.
High-end hotels sometimes feature LED tape lighting under a vanity or a countertop edge for this purpose. In most of our higher-end work, we provide an electrical outlet behind the toilet for a bidet seat, and this is a perfect place to plug in one of these lights. Recently, several manufacturers have started offering LED lighting in the toilet seat for wayfinding.
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.
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