If required in your area our ICBO number is: ICBO ES ER 5327
 Identification - The CERTI-GUARD label identifies cedar
shakes and shingles which have been pressure-impregnated with
fire-retardant polymers to provide permanent fire protection. Class C
shakes and shingles are identified by their blue Certi-Guard label.
Class B shakes and shingles are identified by their red Certi-Guard
label. Class C and B labels must identify the treating company, the
independent testing laboratory, and the building code research number.
Material - Certi-Guard is manufactured from #1
grade Certi-Split cedar shakes, #1 grade Certigrade cedar shingles, or
#1 grade Certi-Sawn cedar shakes.
Application - Class C Rated Roof: Class C rated shakes
or shingles shall be placed over spaced or solid sheathing.
Class
B Rated Roof: Class B
rated shakes or shingles shall be placed over a minimum ½" solid
sheathing.
Class
A Rated Roof: Class B
rated shakes shall be applied over a roof deck assembly consisting of a
minimum ½" thick water-resistant gypsum board, applied to spaced or ½"
solid sheathing. A layer of spaced or ½" solid sheathing is
then applied over the gypsum sheathing, to which the Class B shakes are
applied.
Test
Standards: ASTM E-108,
UL-790, NFPA-256, UBC Standard 32-7
| Intermittent-Flame Test |
| Class
|
Flame
Temperature |
Flame
on Minutes |
Flame
Off Minutes |
Number
of Test Cycles |
| A
|
1400
± 50°F |
2
|
2
|
15
|
| B
|
1400
± 50°F |
2
|
2
|
8
|
| C
|
1300
± 50°F |
1
|
2
|
3
|
|
Spread-Of-Flame Test
|
| Class |
Flame Temperature |
Flame Application |
| A |
1400 ± 50°F |
10 |
| B |
1400 ± 50°F |
10 |
| C |
1300 ± 50°F |
4 |
|
Spread-Of-Flame
Test
|
| Class |
Flame Temperature |
Flame Application |
| A |
1400 ± 50°F |
10 |
| B |
1400 ± 50°F |
10 |
| C |
1300 ± 50°F |
4 |
|
Burning
Brand Test
|
| Class |
Brand Size |
Brand Wood |
No. of Brands |
| A |
12 by 12 inches
2¼" inches thick |
Douglas Fir |
1 |
| B |
6 by 6 inches
2¼" inches thick |
Douglas Fir |
2 |
| C |
1½" by 1½" inches
25/32 inches thick |
White Pine |
20 |
|
Flying Brand Test
|
| Class |
Flame Temperature |
Flame Application |
| A |
1400 ± 50°F |
10 |
| B |
1400 ± 50°F |
10 |
| C |
1300 ± 50°F |
4 |
|
Rain Test
|
|
Class
|
Exposure
|
|
A,B,C
|
Twelve
one week conditioning cycles of 96 hours of water exposure at a rate of
0.7 inches of water per hour, followed by 72 hours of drying time at
140°F. This equates to 20 to 30 years of actual outdoor rain
and wear. |
| Weathering Test* |
|
Class
|
Exposure
|
Test Years
|
|
A,B,C
|
Actual outdoor weathering
|
1,2,3,5 and 10
|
*After the rain
test and each weathering test period, the shakes and shingles are again
subjected to the Intermittent Flame, Burning-Brand and Flying Brand
tests. |
