Step 1 Build Steps for your Deck
First, we’ll show you how to build deck stairs. Your deck stairs should be at least 3-feet wide for ease of traffic flow and safe use and most codes require a 3-foot minimum anyway. Once you’ve figured out how many steps you need, you’ll need to cut stringers. Stringers are the wooden frames for the steps. Use a framing square to transfer the measurements to a piece of lumber. After you’ve marked off all the steps, use a circular saw to cut most of the way, and then a jigsaw to finish the cut. Try not to cut past the mark in the corner because this will weaken your stairs. You can then reuse your first stringer as a template to trace out any additional ones you’ll need.