My contractors have finished putting up the 3-wall poly panels on the wood frame of the gh. When I went inside I immediately noticed some gaps along the bottom and top edge of some of the panels. I think it is the product of some of the panels being quite wide (6’) coupled with the nature of the connecting pieces. They are plastic and the top and base U-channel pieces are not fastened to the frame. The panels are held on by the side f-channels and the H-channels that connect one panel to another, both of which are screwed into the frame. So with the top and the bottom U-channels floating, there is enough flex in the panels that they create a gaps in the middle. This is obviously no good since it will allow air in/out and bugs. So I’m trying to think of the best way to address it. One idea is just to use silicone sealer and caulk along the edges essentially gluing the panels to the frame/foundation at the top and bottom. Another idea that I thought of (that I think I actually prefer) is to have them drill a fairly large hole (say .5”) in the bottom edge of the panels using a spade bit. Then use a screw and a neoprene washer to tighten the edge flush with the frame. The washer would be wider (say .75”) than the hole and the screw would be only tight enough to hold the panel down and not deform it, with the washer actually doing all the work. And then maybe some silicone along the edge as well. The main concern is that the panels expand with heat. I believe they can expand a half inch. I’m assuming that is a general overall expansion and not a lateral shift. So I figure with a hole larger than the screw width it should allow for that expansion without causing a worry about cracks or bowing. And theoretically it should be able to move a bit beneath a neoprene washer. So those are my main two ideas. I suppose there could be a bunch of other methods. Even something like double sided Velcro could work. More potent adhesives, the bottom edge could be covered with bricks, some boards could be attached to cover the edge and compress the panel to the frame/foundation, etc. etc. Any thoughts?