IS 5437 covers marine grade plywood — the highest quality plywood. Must survive 72 hours boiling (vs 8h for BWP IS 303). Used for boats and extreme moisture applications.
Specification for marine grade plywood requiring extreme moisture resistance for boats, ships, and marine environments.
Key Values
Boiling water test72 hours
AdhesivePhenol formaldehyde only
SpeciesGurjan, Keruing and other durable hardwoods
Practical Notes
! Marine plywood is 3-4x the price of commercial plywood.
! Only specific hardwoods approved — check ISI mark for genuine IS 5437.
! 72-hour boiling test vs 8-hour for BWP grade IS 303.