Avoiding Glare & Reflection: Optimal Sign Placement Guide
Glare and reflection can render even the best-designed signs unreadable. This technical guide covers the science of glare in care environments, the impact of different lighting types, and practical placement strategies to ensure signs remain visible in all conditions.
A dementia-friendly sign that ticks every box for colour contrast, typography, and imagery can still fail if glare renders it unreadable. Glare occurs when light from windows or artificial sources reflects off a sign's surface directly into the viewer's eyes, washing out the printed content. For people with dementia, who typically have reduced glare tolerance due to age-related changes in the lens and cornea, even moderate glare can make a sign completely illegible. Eliminating glare is not an aesthetic concern -- it is a functional requirement.
How Lighting Creates Glare on Signage#
Glare on signage results from specular reflection -- light bouncing off a smooth surface at a predictable angle. The three main sources in care homes are overhead fluorescent or LED panel lights, directional spotlights or downlights, and natural light from windows. Each creates different glare patterns. Overhead panels create a broad wash of reflected light on signs mounted on perpendicular walls. Downlights create concentrated hotspots. Windows create changing glare patterns throughout the day as the sun moves. Understanding these patterns enables precise sign placement that avoids the worst glare zones.
Practical strategies to eliminate sign glare:
- Specify matt or satin finish signs -- gloss surfaces reflect 4-10x more specular light
- Avoid mounting signs directly below overhead light fittings where reflection angle equals viewing angle
- Tilt signs forward by 5-10 degrees on corridor walls to redirect overhead light downward rather than into the viewer's eyes
- Position signs on walls perpendicular to windows rather than directly opposite them
- Use recessed sign mounting to create a slight shadow that reduces surface glare
- Replace fluorescent tubes near critical signage with diffused LED panels that spread light more evenly
- Avoid laminating signs -- lamination creates a gloss layer that increases specular reflection
Pro Tip
Test for glare at the time of day when lighting is most problematic. Walk the corridor at the height of a resident (many are shorter than maintenance staff) and look at each sign from 2-3 metres. If you see any bright reflection on the sign face, adjust the mounting position or angle.
DSDC Glare Assessment#
The DSDC evaluates glare resistance as part of its product accreditation process. Products with high-gloss or reflective surfaces are unlikely to achieve the 1A rating. The accreditation assessment includes testing under both artificial and natural lighting conditions. Care homes installing non-accredited signs should conduct their own glare assessment, but this adds complexity that specifying DSDC 1A-accredited products avoids from the outset.
Age-related lens changes increase sensitivity to glare by 2-3 times compared to younger adults. Cataracts, which affect over 30% of people aged 80+, further increase glare sensitivity. A sign that appears glare-free to a 40-year-old installer may be severely affected for an 85-year-old resident.
Recommended Products
Our signs are manufactured with a satin finish on 5mm solid white acrylic, providing the ideal balance between visual clarity and glare resistance. The textured 3D print further breaks up specular reflection across the sign face.
Glare is a solvable problem. By specifying matt or satin finish signs, positioning them away from direct light sources, and testing from the resident's perspective, care homes can ensure that every sign remains legible throughout the day and under all lighting conditions.
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