Plywood - is used in many applications that need high-quality, high-strength sheet material. Quality in this context means resistance to cracking, breaking, shrinkage, twisting and warping.Exterior glued plywood is suitable for outdoor use, but because moisture affects on the strength of wood, optimal performance is achieved in end uses where woods moisture content remains relatively low. On the other hand subzero conditions don't affect on plywood's dimensional or strength properties which opens some special application possibilities.
OSB - or (Oriented Sheet Board) is manufactured in sheets that are 4 x 8 and 5 x 10, rectangular wooden strips compressed and bonded together with wax and resin adhesives. The sheets can vary in thickness. Different qualities in terms of thickness, panel size, strength, and rigidity can be imparted to the OSB by changes in the manufacturing process. OSB panels have no internal gaps or voids, and are water-resistant, although they do require additional membranes to achieve impermeability to water and are not recommended for exterior use. The finished product has similar properties to plywood, but is uniform and economical. It has replaced plywood in many environments, especially the North American structural panel market.
Lumber - ruff/dimensional wood cut to standardized width and depth specified in inches.
- Softwood - (pine, spruce, fur) in most cases it is less dense than hardwood but still very strong and more economical.
- Hardwood -(oak, maple) in more cases is more dense than softwood but very rigid.
LJM is an IPPC-certified company using materials that are compliant with ISPM 15 standards.