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| Armstrong Ceilings Performance Criteria Durability |
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Impact Resistance
Falling Ball Impact Test - Modified ASTM D-1037 Procedure
Ceilings in areas like school corridors or gymnasiums need to withstand abuse, including surface impact. The Falling Ball
impact Test evaluates a ceiling’s impact resistance.
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Washability
Washability Test (ASTM D 4828)
Ceilings installed in laboratories, clean rooms, food preparation areas, and other sanitary applications are required to meet
washability standards. The Washability Test evaluates a ceiling’s ability to withstand washing.
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Scrubbability
Scrubbability Test (ASTM D 2486)
Ceilings installed in laboratories, clean rooms and food preparation areas are required to meet scrubbability standards -
and, sometimes, other specific criteria. The Scrubbability test evaluates a ceiling’s ability to withstand scrubbing.
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Soil Resistance
Simulated Supply Air Diffuser Soiling Test
Dirt accumulation not only detracts from a ceiling’s appearance, but can cost money by requiring painting or replacement of
the ceiling. In addition to reducing acoustical efficiency, soiling can cause a substantial reduction in light reflectance.
Most Armstrong Hi-LR ceilings provide excellent soil resistance for lasting value and performance.
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Scratch Resistance
Hess Rake Test
In any areas where lay-in ceiling panels frequently need to be removed for plenum access, surface scratch resistance is highly
desirable. The Hess Rake Test evaluated surface scratch resistance.
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