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OpenUV Knowledge Base

Collection of useful tips and articles about Sun Safety and Ultraviolet Radiation Index for Developers


Ultraviolet Radiation Reflection from Surfaces

Highly reflective surfaces can increase surrounding levels of solar UV including concrete, snow, glass, water and polished metals *.

MaterialLevel of reflected solar UV Rays (%)
AsphaltNew black roadway 4.1
Old grey roadway 8.9
ConcreteFootpath 8.2 – 12.0
GrassGrasslands 0.8 – 1.6
Lawn 2.0 – 5.0
FiberglassFiberglass boat deck 9.1
PaintWhite house paint 22.0
SandWet beach sand 7.1
Dry beach sand 15.0 – 18.0
SoilClay/humus 4.0 – 6.0
WaterOpen water 3.3
Open ocean 8.0
Sea surf/white foam 25.0 – 30.0
Snow old/new 50.0 – 88.0
WoodWood boat deck 6.6