LVL should be preservative treated to ensure it lasts its full service life as it is manufactured from a range of hardwood and softwood timber species. For termite and rot resistance, LVL can be treated to H2 standards. For a lower cost alternative can be manufactured with a bifenthrin glue line additive which provides termite resistance but is only suitable for use south of the tropic of Capricorn.

The difference of F grade and MGP grade in LVL lumber.

Structural gradingStructural grading is the process by which timber is sorted into groups - or stress grades - with ideally, similar structural properties in each group. Inevitably there is a very substantial range of properties within a group and significant overlap in properties between the groups