Shake Roof Certifications and Test Results

A roof covering material must meet the following conditions when subjected to the particular class of fire tests:

At no time during or after the Intermittent Flame, Spread of Flame or Burning Brand tests shall:

Any portion of the roof covering material be blown or fall off the test deck in the form of flaming or glowing brands that continue to glow after reaching the floor, or
The roof deck be exposed, or
Portions of the roof deck fall away in the form of particles that continue to glow after reaching the floor.

The system was subjected to the Class C test exposure at a slope of 5:12 over conbustible decking. Based on the results obtained, the "EnduraShake" roofing system described herein passed the Class C acceptance criteria for roof covering systems in accordance with the requirements of ASTM E 109-00, Standard Test Method for Fire Tests of Roof Coverage."

-All tests & studies performed by the Southwest Research Institute™

"The 2 inch diamter stainless steel ball was dropped from a height of 20 ft. on to joints, edges, seams, overlapping edges, and at the center of the tiles. No damage (such as tearing, fracturing, cracking, splitting, rupture, or other evidence of damage) could be noted using a Bausch and Lomb 5x magnification lense during post-test evaluation. However, slight surface crazing could be noticed at each impact point. No evidence of damage could be noted on the underside of each impact point, felt paper or to the plywood substrate. Based on this evaluation, the material identified as "EnduraShake - Roof and Siding Wood Shake" natural wood shake roof tiles passed the Class IV criteria of the US2218 test Standard."

	Steel Ball Diameter and Weight				Drop Height
Class	Inches @ lb		(mm) @ (g)		Feet	(M)
I	1 1/4	.28	31.8	127	12	3.7
II	1 1/2	.48	38.1	218	15	4.6
III	1 3/4	.79	44.5	358	17	6.1
IV	2	1.15	50.8	521	20	6.1

-All tests & studies performed by the Southwest Research Institute™

The shakes were secured to the deck with 0.056" x 2" staples per shingle as follows: The first course was laid and secured with two staples approximately 8" from the bottom edge of the shingle. The next course was laid, leaving approximately 6-1/2" of the previous course exposed, and secured in the same manner. The staples securing the second course also penetrated the first course. A third course was then laid, with the staples penetrating the first and second course. It is important to note that each shingle had a total of six staples securing it to the decking.

TEST RESULTS:
Title of Test:	Results	Allowed
(Loads were held for 15 seconds)
@155.0 psf (positive)	No damage	No damage
@155.0 psf (negative)	No damage	No damage

-All tests & studies performed by the Architectural Testing Institute™