fire retardant shakes, fire retardant shingles, fire treated wood shingles  
 
 
 


 
  Certi-Guard™ Fire Retardant Cedar Shakes and Shingles
If required in your area our ICBO number is: ICBO ES ER  5327

Certi-Guard


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.
 
E-Mail us for exact specifications and descriptions.

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