The thing is, my queen sized mattress wouldn't fit up the stairs of our little row house. But typing in "how to fold a box spring in half" brought up this:
It is possible to cut the box spring and still keep its integrity intact. You will need a small handsaw, a razor knife (new blade) and some rope. FIRST thing to do is find a clean area and lay the box spring flat with the underside facing up. Measure and find the middle of the frame. AT the middle point take the razor and cut the dust clothIt actually works, despite sounding really complicated. Now I have an entire bed in my room. Ah, the miracles of the Internet.
(THE SHORT WAY) COMPLETELY from side to side. NOW you will need to cut the box spring FABRIC up the width of the side ...on both sides.Use the razor to cut a straight line. By doing this you now have clean cut from the top seam of the box spring down the width to the dust cover, across the dust cover and up the other side to the finished seam. Now for the sawing. You want to cut the wood framing braces that are closest in line with the line that you cut in the dust cloth and in line with the cuts up the sides. You will see the wood framing running along both sides. You will need to cut through this wood. Way up inside you will see a long edging steel rod that
is part of the frame.........DON'T CUT THE METAL ROD. Now you are ready to bend the box spring in half. Tip the spring up onto its side. Place the soft side against a door frame. What you want to do is place a person on each end and start to fold the box spring in half.....like a book. As you do this apply equal pressure moving your body towards the center as it folds. If there is no door frame you may have to improvise. Once folded, tie a rope around it snuggly. Now you can move it upstairs and into the bedroom. If you can find another door frame, use it to open the box spring slowly and evenly with the underside against the frame. Once it is open,
look way up inside along the edge that was bent and you will see that metal rod that i spoke of before. You'll notice that there is a kink in the rod. If you can get a small board or stick and push on the kink to straighten as much as possible, it will help it lay flat. As an option, get some straight brackets and screw them to the underside to connect the two halves. Sometimes it will lay flat without installing the brackets and
the mattress is on.
UPDATE: Nathaniel notes that he also helped us.