For the exterior, the Osmo 420 Clear UV-Protection-Oil is an excellent option. This product provides excellent protection against UV rays and weather conditions. It also contains biocides, including a fungicide, to offer additional protection.

For the interior, the 410 version of the UV-Protection-Oil is more suitable. It provides the same level of protection and finish as the 420 version, but without the biocides that are not necessary for indoor use.

This product is very easy to use and maintain. Make sure to read the product's Technical Data Sheet thoroughly before starting your project to achieve the best possible results.