ᐅ Lighting Design for Spotlights on Exposed Beams / Sloped Ceilings

Created on: 30 Dec 2018 12:10
M
matrixx88
Hello everyone,

We will start building our new single-family home next March.
At the moment, I am working on the lighting design. Here are the conditions and preferences:

- Recessed spotlights/downlights should be used throughout for general lighting
- In the dining/living/kitchen area, we will have a white-washed exposed beam/board ceiling (the purlin runs along the length of the room)
- In the rest of the house, there is also a sloped ceiling up to the roof. It will not be suspended.

I have already prepared a rough first lighting plan. Due to the limited installation depth, my current favorite are the new Paulmann coins with 110° beam angle and 460lm (white, matte), requiring a 68mm (2.7 inches) cutout.

Question to experienced lighting planners and experts: What do you think about this plan?
The yellow dots indicate the spotlights, the orange ones are additional pendant lights.
Regarding the light output, I aimed for about 300lm in the bathroom and kitchen, and 100-150lm elsewhere.
Since the ceiling is higher and angled at 20°, I expect somewhat less light compared to a standard 2.5m (8 ft) ceiling height. That’s why I chose adjustable beam angles for the fixtures. Is that necessary?

Finally, as a supplement and to illuminate the beam ceiling, I plan to install LED strips of 7m (23 ft) and 5m (16 ft) along the purlin, hidden from view. What do you think about this? Would it be a good addition or part of the general lighting, or rather choose either downlights or the purlin lighting? For example, dimmed to about 25% in the evening while watching TV.

I look forward to your tips and opinions.

Good luck

Konstantin

Grundriss eines offenen Wohn- und Essbereichs mit Küche, Esstisch, Sofa, TV.


Grundriss eines Flurs mit Treppe, WC, Möbeln und gelben Lampenpunkten.


Grundriss eines Badezimmers (10,53 m2) mit Badewanne, Toilette, zwei Waschbecken und Tür.


Grundriss zweier Kinderzimmer mit Bett, Schreibtisch, Stuhl, Kleiderschrank und Türen.


Grundriss eines Schlafzimmers mit Doppelbett links und kleinem Zimmer mit Einzelbett rechts.


Schnittzeichnung eines Hauses mit Rohbau, Fundament, Keller und Dach


Querschnitt durch ein Haus mit Dachstuhl, Wänden, Fundament und Keller.
S
Snowy36
1 Jan 2019 20:30
matrixx88 schrieb:
Hello everyone,

I will definitely reduce the number of recessed spotlights. However, these spots are not intended for ambient lighting but rather for general lighting, discreetly installed in the ceiling. In the living room, I have reduced the number from 8-9 spots next to the kitchen. Since the spots have a 110° beam angle and diffuse glass, they don’t look like the halogen spots we have at my parents’ house.

I’ve already ordered a set for testing purposes, and these can be dimmed in three steps without a flush-mounted dimmer. Each lamp costs about 20 EUR (roughly $22). Matte white, good quality, with a low installation depth in the ceiling cavity. I really like them.

For ambient and reading lighting, floor and pendant lamps will be used. Unfortunately, my wife doesn’t like wall lamps, so these are completely excluded (only for outdoor use). So, by the sofa, there will be a floor lamp; in the bay window, a small table lamp or, at Christmas, a string of lights controlled via a switched outlet. Above the dining table, there will be three pendant lamps, and the same setup as task lighting above the kitchen counter.

I have followed lighting levels of at least 300 lumens per square meter (about 28 lumens per square foot) in the bathroom and kitchen, and 100 lumens per square meter (about 9 lumens per square foot) in the living areas. This means I will reduce to 2 lights in the bedroom. In the children’s room, I will use 3 spots, removing the one above the bed.

Two-way switches with push buttons will be used almost everywhere, including at the bedside tables.

I will upload the updated plans tomorrow.

What do you think about the 100 lumens per square meter? If I stick to that, shouldn’t the spotlight setup be manageable?

Thanks and good luck.
How are you handling the construction? Will you be installing the spotlights yourself?
When I worked with the general contractor on a concrete ceiling, I always budgeted about 150 EUR (about $165) per spot, since it’s not just the fixture itself.
M
matrixx88
1 Jan 2019 22:00
Hello Snowy,

We will handle the electrical work and lighting ourselves (I have an electrician in the family). I have already ordered three of these spotlights and tested them in the attic/studio of my current apartment.

The room is 18 m² (about 193.75 sq ft), including the sloped ceiling (so the floor area is around 25 m² (about 269 sq ft)). In that space, you need about six spotlights to avoid lighting the room too brightly. Therefore, 8–9 spotlights should be sufficient for 40 m² (about 430 sq ft).

However, I’m still not entirely sure about all of this :/