Brightness and quality of light play an important role in the illumination of institutional, commercial and industrial facilities. The light reflectivity ratings of resilient floors are important when taking the complete interior environment into consideration. Since a majority of resilient floors are made of combinations of different colors, these light reflectance figures are average values based on a large area of the pattern. (Light reflectivity values are determined by measuring the percentage of light directed at any surface that is then reflected under standardised test conditions.) The Illuminating Engineering Society of North America recommends that floors have a reflectance factor of 20% to 40% for optimal seeing areas in offices, 30% to 50% for school classrooms, and 20% to 30% for hospital operating rooms. Light reflectance should not be confused with gloss. Gloss can result in reflected glare from highly polished surfaces in the field of view. While gloss level depends primaril