|
|
Softwood Plywood |
Hardwood Plywood |
Oriented Strand Board |
Particleboard |
Medium Density Fibreboard |
|
Raw Material |
Softwood veneer |
hardwood veneer, composite wood cores |
discrete strands, 12 by 150 mm (« by 6 inches) mostly aspen |
discrete wood particles less than 6 mm (¬ inch); wheat straw |
discrete wood fibres and fibre bundles |
|
Typical Adhesive |
Phenol-formaldehyde |
urea-formaldehyde, melamine urea-formaldehyde |
phenol-formaldehyde or isocyanate or both |
urea-formaldehyde, melamine, some isocyanate |
urea-formaldehyde, some isocyanate |
|
Structural versus
Non Structural
|
Structural |
mostly non structural |
structural |
mostly non structural |
non structural |
|
Surface Smoothness |
Smooth when sanded |
smooth when sanded |
smooth when sanded |
very smooth fines on face |
exceptionally smooth |
|
Typical Applications |
roof, floor, wall sheathing, single-layer floor, siding, floor underlayment, preserved wood foundations |
decorative wall panelling, furniture, cabinetry |
roof, floor, wall sheathing, floor underlayment |
furniture, cabinetry, floor underlay, stair treads, counter tops, subflooring in manufactured housing |
furniture, cabinetry, moulding, millwork |
|
Special Applications |
Industrial, laminated veneer lumber, concrete forms, marine plywood |
multiple applications, decorative flooring |
industrial, hybrid products, siding, I-beam web stock |
high density, moisture resistant, fire retardant |
high density, moisture resistant, exterior grade |
Typical Thickness
mm (inches) |
6 to 31.5
(¬ to 1 1/4)
|
6 to 19
(¬ to ó )
|
6 to 32
(¬ to 1 1/8)
|
6 to 38, max. 57
(1/4 to 1«, max. 2 ¬)
|
5 to 38, max. 76 (3/16 to 1 «
max. 3) |
|
Typical Density kg/m3 (lb/ft3) |
450 to 500
(28 to 31)
|
400 to 880
(25 to 55)
|
580 to 700
(36 to 44)
|
640 to 800
(40 to 50) door core 450 (28)
|
640 to 800
(40 to 50) |
