Hello everyone,
Here is the starting situation:
The bathroom ceiling structure from top to bottom is as follows:
Wooden beams
Vapor barrier
Lathing (3 cm / 1.2 inches)
Drywall panels (approx. 1.25 cm / 0.5 inches)
This results in a total thickness of 4.25 cm (1.7 inches).
Does anyone know of recessed downlights that would fit into this space?
I found these:
Recessed downlight Profi Line 58 with IP65 7500888
It says height 2.8 cm (1.1 inches), installation depth 5 cm (2 inches).
Can I install these, or will they overheat?
Or does the height actually not refer to the depth inside the ceiling, but rather to the visible height of the light below the ceiling?
I appreciate any advice!
Best regards
---------------------------------
Hello,
I have removed the link; please follow the forum rules, thank you!
Building expert
Here is the starting situation:
The bathroom ceiling structure from top to bottom is as follows:
Wooden beams
Vapor barrier
Lathing (3 cm / 1.2 inches)
Drywall panels (approx. 1.25 cm / 0.5 inches)
This results in a total thickness of 4.25 cm (1.7 inches).
Does anyone know of recessed downlights that would fit into this space?
I found these:
Recessed downlight Profi Line 58 with IP65 7500888
It says height 2.8 cm (1.1 inches), installation depth 5 cm (2 inches).
Can I install these, or will they overheat?
Or does the height actually not refer to the depth inside the ceiling, but rather to the visible height of the light below the ceiling?
I appreciate any advice!
Best regards
---------------------------------
Hello,
I have removed the link; please follow the forum rules, thank you!
Building expert
Hello Renovierer2013.
Double battens are definitely the best choice!
I haven’t used 6.5 W LEDs yet, but I will (I already have some at home).
The 6.5 W LEDs I have correspond to 50 W halogen spotlights (this is not always the case).
You should be prepared to spend a bit more and focus on quality.
Toshiba and Philips are very good (Note: don’t use Philips with active cooling, you will hear them, especially with low ceiling height and when used in the bathroom!), in a direct light comparison I personally preferred the Philips LEDs because their light seems a bit more natural and also brighter, but that’s subjective. Best to check them out in a lighting showroom!
My LEDs are these: Philips MASTER LED Spot NV 6.5W 827 GU5.3 36G 20
Beam angle shouldn’t be less than 35 degrees or else the light looks like a flashlight.
827 is the color code. That means 2700 K color temperature. There are also 3000 K versions (which lean towards cool white rather than warm white), but in my opinion this is not really necessary as the difference isn’t very noticeable.
Important: "Warm white"! Everything else looks like a lab light!
These deliver about 380 lumens per LED spot.
I also received the following info, which I adjusted here according to our case:
For living areas, approximately 100 lux is recommended. Plus some extra as reserve for losses, etc.
So … the 380 lm of the LEDs (see above) x 4 (that’s how many I have in the bathroom) / 14 m² (floor area of bathroom) = 108.57!
Theoretically, if the spots perfectly and evenly lit the entire room floor area.
As said before, GOOD LEDs do not produce worse light quality than halogen spotlights.
Advantages:
- lower wattage compared to halogen
- longer lifespan
- less heat generation (especially at the housing)
Disadvantage:
- initially around 10-15 times more expensive than comparable halogen spotlights (but cost is recouped quickly through energy savings)
If you compare for example 4 x 6.5 W LEDs (=26 W) against 4 x 50 W halogen (200 W) … I don’t have to think long, especially since in our old bathroom out of 6 halogen spots we had to replace about 2 halogen bulbs every month because they kept failing.
Hope this information helps you.
PS: Make sure the arrangement of the ceiling spots is not too systematic or symmetrical (like in your picture, in rows, at 4 corners, etc.). An irregular pattern is recommended in my opinion (I have seen both variants installed).
PPS: For your 12.x m², 3-4 of the above spots are sufficient.
PPPS: For these spots (since they are GU5.3), you need transformers. 30 W (31€), 35 W (24€), or 60 W (28€) can be found for a good price at, for example, Conrad. You will also need 175 cable.
PPPPS: I wouldn’t recommend using GU10 in your case. Although it saves the transformer, it usually requires at least 10 cm (4 inches) ceiling depth.
Phew, all done!
Double battens are definitely the best choice!
I haven’t used 6.5 W LEDs yet, but I will (I already have some at home).
The 6.5 W LEDs I have correspond to 50 W halogen spotlights (this is not always the case).
You should be prepared to spend a bit more and focus on quality.
Toshiba and Philips are very good (Note: don’t use Philips with active cooling, you will hear them, especially with low ceiling height and when used in the bathroom!), in a direct light comparison I personally preferred the Philips LEDs because their light seems a bit more natural and also brighter, but that’s subjective. Best to check them out in a lighting showroom!
My LEDs are these: Philips MASTER LED Spot NV 6.5W 827 GU5.3 36G 20
Beam angle shouldn’t be less than 35 degrees or else the light looks like a flashlight.
827 is the color code. That means 2700 K color temperature. There are also 3000 K versions (which lean towards cool white rather than warm white), but in my opinion this is not really necessary as the difference isn’t very noticeable.
Important: "Warm white"! Everything else looks like a lab light!
These deliver about 380 lumens per LED spot.
I also received the following info, which I adjusted here according to our case:
For living areas, approximately 100 lux is recommended. Plus some extra as reserve for losses, etc.
So … the 380 lm of the LEDs (see above) x 4 (that’s how many I have in the bathroom) / 14 m² (floor area of bathroom) = 108.57!
Theoretically, if the spots perfectly and evenly lit the entire room floor area.
As said before, GOOD LEDs do not produce worse light quality than halogen spotlights.
Advantages:
- lower wattage compared to halogen
- longer lifespan
- less heat generation (especially at the housing)
Disadvantage:
- initially around 10-15 times more expensive than comparable halogen spotlights (but cost is recouped quickly through energy savings)
If you compare for example 4 x 6.5 W LEDs (=26 W) against 4 x 50 W halogen (200 W) … I don’t have to think long, especially since in our old bathroom out of 6 halogen spots we had to replace about 2 halogen bulbs every month because they kept failing.
Hope this information helps you.
PS: Make sure the arrangement of the ceiling spots is not too systematic or symmetrical (like in your picture, in rows, at 4 corners, etc.). An irregular pattern is recommended in my opinion (I have seen both variants installed).
PPS: For your 12.x m², 3-4 of the above spots are sufficient.
PPPS: For these spots (since they are GU5.3), you need transformers. 30 W (31€), 35 W (24€), or 60 W (28€) can be found for a good price at, for example, Conrad. You will also need 175 cable.
PPPPS: I wouldn’t recommend using GU10 in your case. Although it saves the transformer, it usually requires at least 10 cm (4 inches) ceiling depth.
Phew, all done!
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