Dulux Trade Diamond Clear Gloss Wood varnish 2.5L Tin. Perfect for a water-based maximum durability interior clear wood varnish. it is a simple one pack system & is ideal to be used on wooden floors & other high wear interior wood surfaces this clear wood varnish from the Dulux Trade range can be applied to interior using a brush. The low odour non yellowing varnish takes 1-2 hours to dry & will cover 12-25 m A² per litre on average.