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Test standard for impact resistance testing of rigid roofing materials by impacting with freezer ice balls

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Abstract
This test standard states the test requirements and procedures for the assessment of impact resistance of new rigid roofing materials. Rigid roofing materials are manufactured in a rigid configuration and reamin rigid during usage. These roof materils are manufacturered as tiles or planks from materials such as slate, concrete or clay. This test standard provides a procedure for determining the impact resistance performance of new prepared rigid roofing materials which are intended for use mainly on, but not restricted to, steep-slope roof systems. The test uses the impact forces of freezer ice balls propelled to develop free-fall kinetic energies of the same size hail.
Date
1/2011
Author(s)
ANSI / FM
Page(s)
Keyword(s)
ANSI FM 4473; impact resistance; ice impact; freezer ice balls; rigid roofing


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