The PSL manufacturing process includes tight controls on the raw material inputs, product assembly, and finished product properties to ensure a consistent, high quality, reliable product. Because the process involves the removal of strength reducing defects from the wood strands, the main quality control procedure is the checking for consistent density in the finished product.
PSL is a proprietary product which has been evaluated and accepted for use by the Canadian Construction Materials Centre (CCMC) and by the Council of American Building Officials (CABO).
A standard for the evaluation of PSL (and other structural composite lumber products such as laminated veneer lumber (LVL)) has been developed by ASTM. This standard covers initial qualification sampling, mechanical and physical tests, design value assignments, and requirements for a quality-control program.