Microllam® LVL should only be used in dry (interior use) applications and should not be pressure treated. LVL is not suitable for the pressure treatment process due to material density and glue lines. Also some wood species used in Microllam® LVL production may not be appropriate to absorb the chemicals used in treatment.
The best choice for exterior use is our treated Parallam® Plus PSL. Our treated Parallam® Plus PSL is made from Southern Pine which is a species that can be easily treated.
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