Remember, Gloss Boats is one of our authorised retailers of Semco products. Semco offers long-lasting natural looking protection. It lasts throughout the season and can be renewed without deep cleaning or stripping for years! The protection that Semco teak sealer provides for wooden furniture and marine decking maintains the wood like no other product – no more greying & discolouration! Gloss Boats welcome you to visit for product and advice.