There have been a series of tests performed on the Skylight Protector to demonstrate its defensive value versus the high velocity impact of hailstones. Details of these tests are as follows.

Hail Testing

Tests performed by:
James A. Henderson, Senior Applications Engineer
College of Engineering, Architecture and Technology
Oklahoma State University

in cooperation with:
The Division of Agricultural Sciences and Natural Resources, and
The Oklahoma Alliance for Manufacturing Excellence

The official report follows -

From August thru October of 2000, drop test were conducted to establish the ability of the 2' x 2' protective screen developed by CCobb, Inc. to protect a raised skylight against moderate and severe hail damage. The tests included drops of a 2" diameter steel ball from heights up to 10' 9" (simulate moderate hail) and drops of a 1 ¾" steel ball from height of 18' 0" (simulate severe hail). These tests were successful, in that they demonstrated the ability of the screen to protect the skylight from damage.

Tests with severe hail simulation used a design that included heavier frame construction and ¾ inch greater height of the screen above the skylight, to prevent deflection of the screen that would allow impact to the skylight. This design modification was found to be necessary through prior testing.

The tests clearly demonstrated the ability of the latest design to protect the skylight.

Note: The apparatus used to orient and release the ball was constructed of 3 inch diameter plastic pipe, suspended vertically above the screen. This setup allowed for precise targeting of the test drop. The screen was repeatedly resistant to impacts from frame edge to center.