Timbers

Polyurethenevarnish cab ve sprayed onto wood rather than coated on with a brush, can get gloss or matt finish

Wood stain can be used to protect the wood aswell as staining it another colour

Oils can be rubed into the wood, no gloss affect, inhances the colour of the wood

Preservatives - tanalised timber, no varnish needed as ot has been injected, used for sheds, decking, injecting the wood inhances its like by 4x as long, is seasoned in a kilm and takes the moisture out of the wood, exterior wood not interior

Paint - must put a primer on it before used, primer seals the timber from moisture and lets the paint stick to it.