Home / Knowledge library / Common mistake
Common mistake
Matte Diffuser fixtures in offices
“Installed a light with a matte white cover in your home office? That’s where your headache comes from!”
The problem
A white diffuser spreads light in all directions and causes glare that reflects on the laptop screen
Technical explanation
“Deep reflector” fixtures have a cut-off angle that blocks the uncomfortable light and reduces glare (UGR < 19), making them ideal for work
The result
Better focus, higher productivity and comfort for your eyes while working
Related to
Similar entries
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 mistakeAiming light at glass and mirrors
“Got a spotlight hitting the windows at night? You're blinding your guests!”
- The problem
- Aiming lights at reflective surfaces such as glass creates distracting glare that blocks the view outside.
- Technical explanation
- Light should be aimed at walkways and opaque walls. Avoid aiming lights at windows at night entirely, so you can enjoy the view of the garden.
- The result
- A comfortable evening sitting and a clear view of the villa's garden without distraction.
Common mistakeThe Kelvin crisis on facades
“Your villa has a modern white design, and it's lit in 2700K yellow? That's the biggest architectural mistake!”
- The problem
- Choosing a very warm (heritage-style) light colour on a modern, clean facade makes it look old and yellowed.
- Technical explanation
- Modern facades and gardens suit 4000K (natural white) lighting, while classic designs suit 3000K, and heritage designs 2700K.
- The result
- Bringing out the villa's architectural identity and making it look its finest and most elegant to anyone viewing it from outside.
Common mistakeLighting windows and mirrors
“Lighting your mirrors and windows to make your home look luxurious? You're blinding yourself!”
- The problem
- Aiming lights directly at glass and mirrors bounces the light back as very uncomfortable glare.
- Technical explanation
- Glass doesn't reflect light softly like painted walls do, so lighting should be from the side or hidden behind the mirror (Backlit) to avoid discomfort.
- The result
- Hotel-style bathrooms and corridors, without visual discomfort.
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 mistakeModern façades and yellow light (2700K)
“A modern villa with a clean design, lit with traditional yellow? Biggest mistake!”
- The problem
- Choosing a very warm Kelvin for modern façades makes them look gloomy and yellow.
- Technical explanation
- Modern façades suit 4000K (natural white) for its clean look, while 3000K suits classic and 2700K suits traditional styles.
- The result
- Presents the villa's architectural identity in its truest form.
Guide values; the final decision rests with a qualified engineer under the applicable code.