Basidur BD-0200X marine varnish is a single-component, modified oil-based varnish (alkyd urethane) designed to protect outdoor wooden structures exposed to the most extreme conditions: cottages, terraces, shutters, boats, etc. It forms a glossy, transparent film that is highly resistant to weathering and UV rays. It forms a glossy, transparent film that is highly resistant to weathering and UV rays. Application is simple and effective on parquet, furniture and stairs. The product is now available in matt (BD-02002) and satin (BD-02003) versions, for a finish to suit every need. Please note: in professional jargon, this varnish is often referred to as "polyurethane varnish", although it is actually a urethane varnish.