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One door up, one to go…

April 29, 2009

dscf0536 What to say about the installation of my first 10 X 12 metal roll up door?  

To borrow heavily from Edison, I didn’t make any mistakes, I just identified several ways in which it can’t be installed.

I will say these go up much easier than standard overhead multi-panel doors with tracks that must be hung.  We just bolted together the support brackets, plates and the vertical tracks to the door frame, then craned the 200+ lb drum and door onto the brackets.

One has to pay close attention to the direction the door is rolled on the drum as it is possible to put up backwards.   This befell me despite a firm grasp of how it was supposed to work.  I looked at it carefully while on the ground and swapped ends, and as it is heavy and you have to drag one end around at a time, I somehow double crossed myself.  In retrospect, I’m reminded of those scenes in the movies where the pill has been dropped into one of the two glasses and the two secret agents keep switching drink glasses when the other isn’t looking.

Once the door is up, there is a proceedure to set the spring tension in the drum and we accomplished this easily enough and had the door threaded in the track and rolled down about 1/3 of the way so we could stand on the ground comfortable and install the brackets and lock slides that will engage with stops and the top and prevent the door from rolling up out of the track.  


Several minutes had passed, and the door remained unmoving as we sorted out the brackets and hardware.  Then, the laws of physics prevailed and the equilibrium of gravity vs spring tension was reversed and the door rolled itself up, performed several rotations in place, and then with spring tension relieved, reversed itself and regurgitated the door back earthward, out of the track.

This is scenario is to be avoided.   To remedy, you have to manually wind up the door, bind it with nylon ratchet straps and re-tension, then re-thread. 

I’ll keep these in mind as I tackle the second door later this week.

2 Comments leave one →
  1. April 30, 2009 12:16 am

    Dam you are amazing.

  2. May 16, 2009 2:51 am

    It’s like a giant roll of metal toilet paper… installed the opposite way. 😀

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