EASY WOOD APPLICATION – Prepare wood surface by making sure it’s clean, dry and frost free. Sand surfaces, then apply the first coat. Specially formulated for exterior wood, this clear satin/matt finish resists UV rays, reduces greying, and protects against mould and algae. New... This wood preservative offers excellent coverage of approx., 18㎡/L with one coat This wood preserver outdoor oil has been developed to slow the greying process and enhance the natural character of your outdoor wooden surfaces Osmo UV Protection Oil Extra Clear Matt 1420 Osmo UV-Protection Oil Extra (420) – Ltd NATURAL FORMULA WITH BIOCIDES – Formulated from vegetable oils and waxes, the Osmo UV-Protection Oil Extra contains biocides to protect against algae, mildew and fungal attack. The wood preserver is safe to use while offering long-term wood protection. Dry for 12 hours, and apply the second coat thinly. Decking Paint Osmo UV Protection Oil Extra 420 Clear Satin 2.5L Leaf Blower And Vacuum Fresh wood containing natural wood ingredients need to weather off first before applying the product