Timber Seal Plus 5 LitreHeavy duty lanolin based timber treatment for extreme weather and outdoor environments LANOTEC TIMBER SEAL PLUS penetrates deep into rough sawn timber to help prevent cracking, splitting and wood rot in high exposure conditions. It nourishes and protects the surface while providing long lasting water resistance and UV protection for timber exposed to sun, rain and salt air. Global GreenTag Platinum PHD Certified their highest product health rating