"Jean-Paul Roy" wrote in message m...
How can you get a 40 ft garage style door to work properly. Can you imagine
one track holding each end. Wouldn't the midlle colapse when in the up
position?

J.P.
"Musky" wrote in message
...
Rollers, folders.... all asking for trouble. Why not a garage-door
style door, single piece and folding upward with help from low-tech
springs? That's what we recommend for county hangars. Very low
maintenance, can be automated, and don't flop around in the wind.

My opinion only, of course.


Mine is a single piece 50 ft "garage-type" steel door with a
residential door and six residential windows in it. It is suspended
on cables and guided by two parabolic curved tubes. Every time
there's an earthquake slight alignment problems delvelop and the side
rollers take huge stresses and snap apart the sides of the building.
The side rollers attract dust and are high mtc. But it allows me to
have windows and a man-door which is nice. But for dependability I'd
have gone with an electric bi-fold if I had to do it over again.

pac