To help protect the colour of the timber by slowing down the natural greying process caused by UV exposure, we recommend using Osmo UV Protection Oil Extra. this product offers superb durability against weathering including the greying effects of the sun. It also contains biocides to protect the wood against mould, algae and fungal attack.
One thing to bare in mind is that cedar is naturally prone to silvering quickly. Although this is often a reason it is chosen, many customers prefer to retain the natural warm colour of the cedar. Although a clear UV protection Oil will slow down the silvering effects of the sun, it cannot stop it all together and regular maintenance is required to upkeep the level of protection.
An alternative to the clear version of this oil is Osmo UV Protection Oil extra (428) Cedar. The (Cedar) version contains coloured pigments that better protect the natural colour of the wood. It's worth noting that although this product is called 'Cedar' it's likely that it will not specifically match the colour of your Cedar cladding. Both of these products are available in sample sizes. We always recommend doing test areas before starting any project. Apply in an inconspicuous area to assess the final finish.
If required, wipe the cladding with methylated spirits prior to applying the oil to remove any surface dirt or grease from the wood.