Steel stair to exterior attachment Post date Home › Forums › Materials, Trades › Miscellaneous Metals › Steel stair to exterior attachment This topic has 0 replies, 1 voice, and was last updated 5 years ago by atuter. Viewing 1 post (of 1 total) Author Posts August 30, 2018 at 10:34 am #35 atuterKeymaster Can someone advise how to attach an exterior steel stair to my house’s exterior? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In → Earthwork