Recessed lighting placement and size


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Old 05-05-14, 07:36 AM
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Recessed lighting placement and size

I have a finished room in my basement which I'd like to upgrade. I'd like to install recessed lighting because the ceiling is pretty low (6'7"-6'8") and I'm 6'5". There is a single fixture in the middle of the room which I have to avoid smashing my head into every time I enter the room. I'm planning on going with a few of these slim recessed LEDs. I'm trying to calculate where I should place the lights and how many I'll need.

Here is a quick diagram of the room:
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You can see the rough size of it as well as the door (on the left) and window (on the right). Additionally, the smaller looking door is actually a crawlspace door which is about 2' tall. Above it, though, the ceiling is angled to accommodate a stairwell for the upstairs so that area isn't very usable.

The square footage is approximately 140 square feet. I found this site which tells you how to estimate the amount of light you need in various types of rooms. Assuming I need 10-20 foot candles needed for this living area, that equates to 1,400-2,800 lumens. The 4' recessed lights I linked above are 700 lumens, so I'm thinking I'll be OK with three. I'm also wiring in a dimmable switch. Will I be OK with 3 or should I go with more?

Assuming 3, I've marked in rough locations in the diagram above where I'm thinking I'll put the lights. Any problems?

Thanks in advance
Mike
 
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Old 05-05-14, 09:48 AM
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It looks like four may cover the area better.

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Old 05-05-14, 09:56 AM
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Thanks for your response, PJmax.

Regarding the light you put in the upper left, the ceiling in front of the crawlspace is angled to accommodate a stairwell for the upstairs. About 3' off the floor, the ceiling begins at a 45 degree angle so that area isn't very usable. The location of the light you placed would be the edge of the angled ceiling. I can take a picture this evening for clarification.
 
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Old 05-05-14, 10:31 AM
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Personally I would error on more cans then less. LED lumen levels tend to be a bit over stated. With that low of ceiling, and 4" cans I would almost double the amount. You can always dim them down, you can't make them more bright.
 
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Old 05-05-14, 12:53 PM
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Thanks Tolyn. I think it would definitely be advisable to error on the side of too bright, given I'll be adding a dimmer. I'd hate to go through everything and have it be too dark.

I'm thinking of going with a setup like this:
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Given that setup, I'm debating on what lights to go with...
- 4" slim LED - 700 lumens each - 3,500 total lumens - $66 each - $330 total
- 4" super thin LED - 550 lumens each - 2,750 total lumens - $56 each - $280 total
- 6" super thin LED - 700 lumens each - 3,500 total lumens - $66 each - $330 total

I'm surprised it's going to cost this much for just the lights. I'm kinda leaning toward the 6" LEDs.
 
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Old 05-05-14, 01:14 PM
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The layout looks good. I think I'd lean towards the 6" fixtures.
I would think they should give a wider beam spread.
 
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Old 05-07-14, 06:33 AM
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With the low ceiling you will not get much beam spread. A rough guide is when using a 6" with an open baffle trim the circle of light is roughly the same as the mounting height.
 
 

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