Troy, we have a similar set up. I also have strong winds blowing on the doors. I have a fan on the back wall, and the fan louvers bang open on windy days with the GH doors open. We also only used one screw on our roof panels, in the center brace (and extra clips.) I agree, thank goodness for the EMT bracing recommended by Gardenerwantabe and others here. Im coming to two new conclusions. First, I think you're right about the unsecured bottom of the roof panels being a risk in some winds, based on your observations of the roof panel bottoms flapping up and down, and bwrights experience of losing screwed-down roof panels twice. (Thats the first post Ive seen about the loss of screwed-down panels.) I taped the bottom of our roof panels to the greenhouse frame, but only because we were one of the "lucky ones" whose roof panels were not quite long enough to project over the gutter as shown in the manual. Not everyone has this problem, but Laserfan used aluminum tape to bridge this gap on his HFGH, so I did too. I was not trying to prevent the wind from getting under the roof panel bottom, but thats probably been (accidentally) protecting our roof in high winds. This also fits with bwrights comments about using the Freezer King tape to similar advantage, to make sure all edges are sealed. Heres our roof panel at the bottom edge: Second, Im starting to see the roof vents as a fairly big risk for people in very windy areas. My kit may vary from others, but the poly panels in my roof vents were a bit too short to prevent movement in the vent frame. They fit tightly from side to side, but after each window was assembled, we could slide the poly panel up and down in the window frame, about 1/4". During one bad storm, I almost lost the poly panel from one of the roof vents. The wind had pushed the panel up in the frame so the bottom edge of the poly was exposed, and the wind got underneath and pried the panel part way out of the vent frame. I climbed up and taped it to get through the night. Next day, we removed all four window vents, and I caulked each poly panel in place on the outside of the window frame. The poly panels no longer wiggle in the vent frames. But, I still have the problem of bad winds lifting up the vent frames up (maybe ¾"?) even though the vent handle is locked in the last hole ("closed down") position. Wind picks up the vent frame, and when the gust stops, the vent doesn't always fall back in place correctly, so it's ready to be picked up by the next gust. If this happens over and over again in a storm, maybe its enough to shake the window stop out of the hole in the roof vent handle...? Once that happens, the whole vent frame could flip over backwards until it popped out of the roof peak channel (I watched that happen while building the GH, retrieving one vent window from our house roof.) If a roof vent fails, wind likely rushes in and puts pressure on the weakest points from inside the GH. If all the panel screws hold, the doors become the next weakest point, so they blow outward. Thats one theory, anyway, and right now Im thinking the safest thing is to leave my vents wired down permanently, since I cant figure out how to prevent the frames from lifting up that 3/4" inch (or so) in a high wind. Wish I had a better solution, but so far Im stumped. I'll add some of this info to my HFGH blog in case it helps others. Thanks for all the good posts here! Good luck with the door rebuilding Troy, looking forward to your pictures. Sheri

Perhaps if you had squared the frame to start with the doors would have worked. I read all this drama over the doors mine is in it's 4th season and the doors work fine. In the spring I can crack the doors and let in some cool air and they will stay in place can't do that with a swinging door a gust of wind would whip it around into the GH and tear something up. I mention to my wife that many people was installing swinging doors and she said I don't want them the ones we have work fine so if the little woman can slide them and no reason she can't they slide real easy. In my opinion the sliding doors are MUCH better than a swinging door that must remain latched or it will be tore off by the wind.

My easiest solution, although admittedly inelegant, is a nice big spring clamp. I've used two of these on our 10x12 doors for years (one up high, one lower.) The benefit to me is they compress the weather seal I added to the gap, and it provides a nice air tight seal the whole length of the doors (a benefit when heating in winter.) To open the doors I remove the clamp and then re-clip it to one side. Just takes a second. Only complaint is the clamps are so strong it's easiest to squeeze with two hands, which means I have to set my coffee cup down. :-) Smart cat!

The spray will not last long and the carrier in the spray MAY damage some of the plastic parts of the door...but I can't be sure about this. The grease will last about a year....here in the cold north it is the only thing that seems to work for my door in Winter as well. Dave Milwaukee