Exterior (WBP) Plywood


Exterior Birch Plywood maintains its performance characteristics under conditions of high humidity and does not deform or soak. WBP exterior plywood can be used in both interior and exterior finish.

Key benefits

  • Higher water resistance
  • Durable and wear resistant
  • Hard surface
  • Resistance to temperature variation: through a range of -40°C to +50°C (-40°F to +122°F)
  • WBP exterior plywood Comes in a variety of thicknesses and sizes


Profile Detail
Standard sizes, length x width, mm (ft) 1525”1525 (5”5) 1220”2440”1220 (4”8”4) 1250”2500”1250 (4”8”4) 1500/1525×2440/2500 (5×8) 2440/2500”1500/1525 (8×5) 1500/1525”3000/3050 (5”10)
Thickness, mm 4-40
Plywood grade I (B, S), II (BB), III (CP), IV (C)
Surface type Outer layers sanded (S2S), one side sanded (S1S), unsanded (NS)
Formaldehyde emission class ‡E1
Waterproofness Higher
Density, kg/m3 640-700
Moisture content, % 5-14
Edge sealing
Plywood is produced under STO 00255177-001-2013 “General purpose plywood with birch face veneers.”*

Strength Specification

Subject Thickness,mm Index
Static bending strength, N/mm2, not less along the outer layer grain 9-40 60
across the outer layer grain 30
Strength in tension along the grain, N/mm2, not less 4-8 30
Modulus of elasticity in static bending, N/mm2, not less along the grain 9-40 6000
across the grain 3000