Ask Randall

Randall Whitehead, IALD

Randall Whitehead, IALD, is a professional lighting designer and author. His books include "Residential Lighting, A Practical Guide." Whitehead has worked on projects worldwide, appeared on the Discovery Channel, HGTV and CNN, and he is regular guest on Martha Stewart Living Radio. Visit his website for more information on books, upcoming seminars and the latest lighting trends.

Recent Posts

February 29, 2016
LEDs do very well in cold and freezing temperatures. They are used throughout the United States and other countries for roadway and parking lot...
February 29, 2016
I would say that lumen output is a measurement of the illumination a bulb produces. The wattage is the amount of energy it consumes to produce that...
February 29, 2016
CSA (Canadian Standards Association) is the UL of Canada and just as stringent. They are good to go for installations in the United States.
February 29, 2016
People are always putting high-wattage bulbs in their exterior decorative fixtures. They think it provides more light, but it just produces more...
February 29, 2016
I don’t know why it was not a part of the lighting lexicon earlier, but my guess is that because all incandescents were 100 CRI and all fluorescents...
February 01, 2016
Yes, using just recessed downlights in a room produces harsh shadows on people’s faces and makes the ceiling feel lower. I would recommend dividing...
February 01, 2016
As far as indirect lighting goes, using LEDs, I would recommend 250 lumens per foot. Your pendant fixtures should be in the 36-inch to 42-inch...
February 01, 2016
The short answer is yes, you can get LED that is daylight in color and has full-spectrum quality. I need to put in a qualifier, though. Full-spectrum...
January 05, 2016
I think what you’re doing is absolutely correct. Use two mirrors and position the three sconces so that they are equidistant on either side of the...
January 05, 2016
For pure color rendering, the optimal color would be 3500K, but this color can be a little too cool for skin tones. My recommendation would be to use...

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As technology progresses, so should your business. Many retailers are looking for portable solutions to allow for accessing... read full story
Q:  What’s the size and scope of your collection for Elegant Lighting?A: I’ve designed 40 pieces for them, so it’s... read full story
Residential Lighting: What hats do you wear today that designers didn’t wear in the past? Lisa Kahn: I find that I wear a... read full story
Sponsored by Crypton Home Fabric, this year’s High Point Style Spotters are back to scour the fall market for the latest new... read full story


Wednesday, December 7, 2016 Sponsored by Legrand, Lightovation and Rev-A-Shelf. Register for this webinar here: read full story
This webinar has already taken place, but you can register and watch in on demand here. Sponsored by Legrand. Webinar Overview:Learning units:AIA/CES LU (HSW) 1.0... read full story
This webinar has already taken place, but you can still watch it on demand by registering here. Sponsored by Emerson and Legrand. Webinar Overview: Learning units:AIA/... read full story
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