On Sat, 14 Jul 2007 20:44:26 -0700, wrote:



There's a crack at the top-most hinge/lip at the backside (the side
facing the inside of the garage) of the bottom-most section of the
garage door. That's what causing the sag (I suspect someone back
into it with the car a while back)

The bottom-most section is sagging (it bows) when the door is raised
to its top-most position.


I'm picturing it the way Derby Dad is and thinking the same thing. A
problem might be that the lower horizontal lip of the piece above
might go flush against the top horizontal lip of the lowest piece. If
so, and if that's where you want to attach the angle iron, pound that
horizontal part up enough to make room for the screw heads. If later,
you replace the bottom section, you can pound that inch back down to
where it was.

If you don't want screws to show through on the front of the door,
maybe there is enough lip facing backwards. If not, use the
horizontal lip and "screws" with smallish heads, plus washers. I'm
thinking maybe rivets have the smallest heads, and the washers don't
have to be thick. Would pop rivets be enough to hold this thing in
place? I have no real feel for how strong they are, or how strong 10
are. I've only seen one quality of pop-rivet. Is there anything
better than that? Or are they just too weak?

If none of this will work, you can put the screws through the front of
the door.