Hi there. I am in the process of building a workshop and need some projected hinges for the doors. I have seen that screwfix's Parliament hinges look ideal, but not sure they are suitable for external use. http://www.screwfix.com/c/security-ironmongery/parliament-hinges/cat5520006 Or maybe the fire door version? http://www.screwfix.com/c/security-ironmongery/fire-door-hinges/cat840988 Any suggestions or more suitable alternative?