you do need to measure correctly at the bottom so the ridges interlock properly on the last piece.
That was my concern, but I don't think measuring will work in real life.
![undecided =|](http://www.armedpolitesociety.com/Smileys/default/undecided.gif)
Might be better to do it backwards: run a panel right down the middle of the top, and then slip the panels on either side
under the edge of the panel above it before screwing down the edges
![Huh? ???](http://www.armedpolitesociety.com/Smileys/default/huh.gif)
Somebody offered to us the frame for one of those portable soft cover carports (the cover of course long since gone). We were thinking of making a greenhouse out of it, by running some translucent panels (lexan?) lengthwise.
Also, another neighbor gave us a whole pile of timbers from the garage that they tore out to build a new metal one. As soon as the snow melts and the mud dries we're going to haul them over here. What I would like to do is build a detached root cellar with them
![smiley =)](http://www.armedpolitesociety.com/Smileys/default/smiley.gif)