Fire Retardant Plywood

Fire Retardant Plywood

Aditya Densified Fire Retardant Marine Plywood a.k.a. 4-in-1 plywood

Aditya Densified Fire Retardant Marine Plywood is a unique hardwood ply which exceeds four ISI standards(IS: 710, IS:303, IS:3513, IS:5509), hence the name 4-in-1 plywood. This plywood is manufactured with veneers from hardwood plantation timber and impregnated with a special combination of highly effective fire retardant chemicals prior to bonding providing uniform fire retardant characteristics not only on the surface but to the very core of each veneer. The plywood is also treated with thermosetting resins and micro organism resistant chemicals and finally densified under high pressure and temperature. There can be simply no comparison between Aditya Densified Fire Retardant Marine Plywood and any other ordinary pressure treatment plywood.

Advantages of 4-in-1 plywood

Aditya Densified Fire Retardant Marine Plywood is a unique and exceptional plywood that provides boiling water resistance for 250 hours. It also provides resistance to ignition surface flammability and flame penetration.

The plywood is treated with thermosetting resins and micro organism resistant chemicals. This treatment protects the board from chips, cracks, warps, twists, termite, fungus, rot and abrasive action of mud, water, sand and extreme weather conditions. The chemicals impregnated are non-corrosive to aluminium and steel.

Applications of 4-in-1 plywood
  • Making Door Frames or chowkhats (35 mm)
  • Ship / boat building
  • Flooring of tempos / Mini Trucks
  • Conatiner Flooring
  • Walls of cold storage halls
  • Alternative to metals particularly for tooling, jigs and moulds
Comparison between 4 ISI standards with 4-in-1 Fire Retardant Plywood
PROPERTIES 4-in-1 IS:3513 IS:710 IS:5509 IS:303
Density (Kg/cm3) 850 850 0.8
Glue shear strength(kg)
Dry state 150 135 9%
wet state 135 100  
Mycological state 130 100  
Tensile strength (kg/cm2)
Along the grain 600 567 420 1.56%
Across the grain 300 250  
Static bending strength (kg/cm2)
Along the grain 650 567 98
Across the grain 500  
Compressive strength 1300 1250 9000
Flamability 30 mins 30mins 45, 160 
Retardation of Preservatives(kg/cm2) 16 12 15 8, 12

SIZES THICKNESS
Length up to 10ft. 35 mm, 60 mm
Width up to 21t. 155 kg