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   Homasote Co.  Recycled Building Products\Roof Deck  

Firestall Roof Decking

 

 


FIRESTALL Roof Decking 


DESCRIPTION


Firestall Roof Decking is a nailable UL Class "A" fire rated structural roof decking. It is made of 1 to 4 plies of Homasote structural board and a face ply of NCFR Homasote.


USES


Firestall Roof Decking is designed for use as a structural load bearing decking in residential and commercial buildings that require a Class A (25 flame spread) rated decking. It can be applied over either steel or wood framing or structural steel deck and provides a nailbase surface to attach additional insulation, shingles and other finish roofing.

Firestall Roof Deck complies with 1993 BOCA National Building Code Section 2310.2, Fire retardant-Treated Wood.

Extended ASTM E-84 Fire Test Method, Factory Mutual Research Report J.1. 1R9Q9.AC.  


SIZES, WEIGHTS & THERMAL RESISTANCE


 

Thickness
Nom.

Size

Weight
(lbs./sq.ft.)

R-Value

1.0"

2' x 8'

(23 x 1/8"  x 95-7/8" actual)

2,63

2.05

1-3/8"

3.48

2.5

1-7/8"

4.63

3.1

2-3/8"

5.78

4.9

2' Edge Square
8' Edge T & G 


LOAD TABLE


 

Load Table

Maximum Rafter Spacing for live loads of:

Panel Thickness

50 PSF

1"

24"

1-3/8"

32"

1-7/8"

48"

2-3/8"

48"

  • Load Table calculations are based on 2 or more continuous spans.
  • 10 PSF dead load assumed 


TYPICAL PHYSICAL PROPERTIES



 

440 Surface

NCFR Surface

Density, lbs./ft.

26-28

34-40

Tensile Strength, PSI

450 - 700

400 - 700

Hardness, lb. (Janka Ball)

230

275

Water Absorption by vol. (Max.)
     (2 hrs. immers.)
     (24 hrs. immers.)


5%
15%


5%
14%

Expansion from 50% - 90%
     Rel. Hum. (Max.)

0.25%

0.30%

Flame Spread (NCFR surface)

Class I (or A)

Noise Reduction Coefficient

20

 


ARCHITECTURAL SPECIFICATION


(Short Form)

All structural Roof Panels shall be_______thick Firestall Roof Decking as manufactured by the Homasote Company, West Trenton, NJ, made of a composition of Homasote structural board and a face ply of UL Class A NCFR Homasote. All panels shall be installed in accordance with current Homasote Company Instructions.

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