ᐅ Basement Lighting Design for Prefabricated Concrete Slab Ceiling

Hello everyone,

I am currently planning the lighting arrangement for the basement ceiling.

In the hallway, surface-mounted spotlights are planned; in storage room III, recessed spotlights; and the rest will have standard ceiling lights or moisture-resistant fixtures. The number of spotlights seems quite high to me (although I have no experience). What do you think about this? Smaller spotlights with a beam angle of 30-40° are planned. Does that make sense, or would larger ones be better?

Thanks in advance and best regards,

PMW

P.S.: Each of the two hallways is planned to have a ceiling motion sensor

For the 180mm (7 inch) junction boxes, I would recommend using 150/155mm (6/6.1 inch) panel lights. Choose any brand you prefer (Osram, Philips, etc. all come from China anyway :-)) and check the illuminance values to determine how many you need for the desired brightness in the room. Then distribute them evenly throughout the space and select the edge distance based on the beam angle and ceiling height. To answer your question—if you plan with the 150mm (6 inch) panel lights, you can probably reduce the number of fixtures somewhat, based on my intuition. There are quite a lot of them otherwise.

Are we talking about a standard utility basement? In that case, I would save every euro on spotlights, especially recessed lights. In the hallway, reduce them by at least half.

Thank you for your opinion.
It is half utility basement, half living basement.

I wouldn’t even want such a cluster of spotlights in a hallway on the upper floor. Personally, I don’t even see the cost-benefit ratio here. That may also be because I don’t like them. I find something like (just quickly googled) “ceiling spotlight Ronka, 49.5cm (19.5 inches), 3-arm, white” positioned centrally in a hallway or living spaces not only sufficient but also simply stylish and easy to update with changing trends—much less intrusive, allowing other interior styles to stand out.

Here, it’s just a basement, not a showcase stage. Only one room, storage room III, has a window and can therefore be used as a living space, presumably as an office.
That room might actually benefit from more cozy lighting instead of these overhead spotlights. Along with a desk lamp, a floor lamp in the corner would be nice—I work in a government office, and everyone has brought their own floor or desk lamp because ceiling lights are simply unbearable. They are fine when tidying up.

If you really like the spotlights, go ahead—just install half as many as planned everywhere. But don’t overestimate this kind of lighting setup.

Such an effort for lighting (though not using spotlights in our case) in the living area is understandable. However, in the basement, the goal is simply to have the maximum brightness to clearly see whatever is stored there. In this respect, I find the expenditure to be a waste, especially given the weaker result in the end. I would rather invest in quality lighting in the living area, where lighting should not only provide brightness but also fulfill many other functions.