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Fact
The d=h rule fails in high ceilings
In double-height spaces, the spacing between spots should shrink as the beam angle narrows, to make sure the light reaches the floor.
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Common mistakeFacade lighting and windows
“You installed powerful floodlights on your villa facade, but the light hits the windows and keeps you up at night?”
- The problem
- Aiming facade lights at a wide, random angle lets light spill into the bedrooms.
- Technical explanation
- Exterior lighting needs a very narrow beam and precise aiming (Narrow beam) so it lights only the architectural details without causing disturbance.
- The result
- An eye-catching, elegant facade, with complete calm and comfortable darkness inside the bedrooms.
Common mistakeThe facade-lighting mistake of mounting flush to the wall
“Want your facade light to throw a stunning beam? Don't mount it flush against the wall!”
- The problem
- Mounting wall lights flush against the wall creates a harsh, very distracting Hotspot that spoils the facade.
- Technical explanation
- Moving the fitting slightly away from the wall and choosing the correct aiming angle gives a long, ideal beam that highlights the villa's height up to 16 m.
- The result
- A facade that catches the eye of the whole neighbourhood, at low cost and with smart installation.
Common mistakeOverdoing outdoor lighting (Floodlights)
“Installed stadium floodlights on your villa facade? You haven't lit it up, you've washed out its features!”
- The problem
- Flooding the facade with wide light erases the architectural details and creates light pollution.
- Technical explanation
- Highlighting a facade needs a well-planned layout of upward and downward Spotlights with narrow beams to create “contrast” between light and shadow, because shadow is what reveals the beauty.
- The result
- A palace-like facade with a far smaller electricity and installation budget.
Common mistakeLight pollution and disturbing the neighbours
“Installed lights on your home's facade, but the light reaches your neighbour's bedroom?”
- The problem
- Aiming outdoor lights at wide, random angles causes light pollution and disturbs the surroundings.
- Technical explanation
- Using outdoor lights with a narrow beam (Narrow Beam <15°) keeps the light on the facade column only, without spilling into windows.
- The result
- An elegant, well-defined facade, and complete comfort for your family and neighbours.
Common mistakeRandomly placed bollard lights
“Has your garden turned into an airport runway because of your path lights?”
- The problem
- Placing bollard lights too close together, randomly and excessively
- Technical explanation
- The ideal path bollard is spaced every 4 to 5 metres, and its height should ideally be half the width of the area being lit
- The result
- Elegant, calm garden paths with no extra fixture costs
Common mistakeChoosing the wrong wattage for façades
“Want your villa façade to stand out from afar? Don't fit it with a 5 W light!”
- The problem
- Using very weak Grazer fittings for tall façades.
- Technical explanation
- A tall façade needs a 36 W fitting (about 2300 lm) to reach the top of the building, while 5 W (300 lm) is left for soft lighting of lower walkways.
- The result
- A palace façade that catches the eye of the whole neighbourhood.
Spec explainedLighting plants (Spike & Up-light)
“You spent a fortune landscaping your garden... and at night it looks like a graveyard?”
- The problem
- Failing to bring out the beautiful texture of tree trunks and leaves
- Technical explanation
- Using a 3000K Spike light with a narrow angle (Up-light) that shines from the trunk upward brings out the tree’s colour and creates wonderful dramatic shadows on the villa walls
- The result
- A garden full of life that invites you to sit outside at night
Comparison5° ground Up-light
“Lit up your façade and all the light shot off into the sky?”
- The problem
- Using wide ground lights for tall columns
- Technical explanation
- Tall, slim columns need a very narrow Beam Angle (5°–10°), almost like a laser, to focus on the architecture without polluting the sky
- The result
- Clearly showcasing the height and grandeur of the villa
Guide values; the final decision rests with a qualified engineer under the applicable code.