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Home > Products > Fire Safe Plywood (IS : 5509)

 


Century Plyboards (I) Limited may fairly claim to be the pioneer in introducing "Firesafe" - a fire-retardant plywood. "Firesafe" is not just a fire-retardant plywood but it also a leach resistant, flame retardant material. Besides being boiling water resistant "Firesafe" also resists fungi, insects and more importantly pin hole borers. The most unique feature of the FIRESAFE is that it is non-leachable: i.e. the fire retardant chemical will not wash out with water or moisture over a period or during the fire fighting.

 

What makes it 'FIRESAFE"

Selected hardwood panels undergo vacuum-cum-pressure impregnation as per IS: 5509 of a special chemical composition that helps to form a protective char, in case of fire. Since plywood is an organic material it cannot be absolutely fire-proof. "Firesafe" however, resists immediate ignition/burning, surface spread of flame and flame penetration. Consequently, the panels maintain their structural integrity for longer periods in comparison with other building materials.


Other additional features

۰   Unlike other brands of fire-retardant plywood, "Firesafe" is non-hygroscopic in nature. Hence it does not corrode the hardware elements like screws, nails, etc. Besides it is dimensionally stable under adverse environment.

۰   It does not hinder overlaying / lamination operations.

۰   Unlike other FR plywood, Centuryply FIRE SAFE PLYWOOD can be easily painted

۰   "Firesafe" can be machine-cut and worked at with ordinary carpentry tools.

۰   "Firesafe" is available in large panels, saving the cost and time of using joints while working with it.

۰   Smoke generation of "Firesafe" in flames is contained due to its lower 'flammability', and lower 'rate of burning'.

Hence "Firesafe" is a fire-retardant plywood panel with a difference.
 

Suggested end uses:

۰   It can be used both for interior and exterior applications- for room and wall linings, vehicle bodies, exhibition stalls, in boiler houses, auditoriums etc.
 
۰   Building : The ceiling of rail coaches, subway cars and buses, ship interiors, motorcar and container construction, etc. where resistance to  flame        spread & penetration is required

۰   Partitions paneling, ceiling, cubicles, door in-fills etc.

۰   Kitchen and public area, food stalls

 

             Technical Data

 
 
 

Fire Retardant Plywood IS 5509

1. Moisture Content (%) 10 - 12
2. Glue Shear Strength (kg) > 140
3. Water Resistance test (kg) > 115 (when tested after 8 hours boiling)
4. Mycological Test (kg) > 120
5. Adhesion of plies (kg) Excellent
6. Preservative Treatment non-leachable glue line poisoning
7. Bending strength (kg/cm2) > 475
8. Tensile strength (kg/cm2) > 650
9. Flammability test > 40 min *
10. Flame penetration test > 35 min *
11. Rate of Burning > 40 min *
12. *: When tested for standard 12-mm thick plywood
Specific gravity
0.8 - 0.85
13. Hygroscopicity
(kept at about 90% Relative Humidity for a Fortnight)
12-14%
14.Screw holding strength (kg) > 200
15.  Nail holding strength (kg) > 50
16.  Retention of fire-retardant chemicals (kg/m3) 70 - 80
 
 
 
 

Century "Firesafe" vs. other types of panels - a comparative study.
  

Properties

Century
Fire safe Ply

* * Untreated
Plywood

* * Solid lumber Requirement
as per IS:5509 * *
Specific gravity 0.8 - 0.85 0.7 0.6  
Moisture content (%) 8-12 10-12 12  
Flammability (as per IS-1734-Part 3) 40 min 12 min 7 min 30 min
Flame penetration (as per IS-1734 - Part 3) 45 min 16 min 5 min 30 min
Rate of burning (as per IS -1734 - Part 3 ) 34 min 10 min 3 min 20 min
Test of leachability - Flame penetration after keeping under constant flow of water for 24-hours 33 min     30 min
 
 
    **: When tested for standard 12-mm thick plywood

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