watching with interest. but have searched myself and gave up. large shed sliding doors made from 2x4's / 2x6's and same metal on the outside of the door as rest of metal shed. the doors are "cheap doors" compared to shed doors that roll up on tracks, like nearly every "garage door you will find in town/city" for someone parking there car in the garage. the weather proof strips are the big thing. trying to put a weather proof strip on the bottom of large shed sliding doors. and run a car / truck /tractor / heck pulling push mower across the weather strip. and the weather strip goes bye bye.
i have seen a couple "full expensive door locks" for sliding doors. and pull on a handle / lever. and some hooks grab hold of door. and physically pull the entire door (each corner of the door) in towards the shed. hopefully were some weather proof strips are. and locks down the door nice and tight, helping to remove any sort of gaps. for a 2 door sliding doors. the middle were the 2 doors come together. there was a bottom center and top center latch, that held the doors together and brought everything nice and tight. i say expensive, due to cost of lock mechanisms vs a roll up door. i would imagine a roll up door coming in about same price and be better off with roll up door.
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decoys are better off left at the store and cash in your wallet, or on the shooting range.
i have used "gutter guard" you can pick up a 20 to 50 plus feet comes in like 3",4",5",6" wide, of it for a few dollars at most local hardware stores.. you un-roll it. and it slides into top of your gutters. the stuff was a pain to use, so it got ripped out of the gutters, and ended up, being cut up and then stapled all the way around both sheds. were ceiling / walls meet. but the stuff is junk on sliding doors themselves. actually i take that back... rubber or any sort of plastic netting did not last long enough. i should of bought "thicker metal mesh" i had go back over a couple spots were the rubber / plastic netting was pushed in so a birds, rats, cats, racoons could get in. *ughs*
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if you bought a more expensive "track system" you might have some extra "adjustments" on it. besides the normal up/down for each door. you might have some bolts with some extra nuts on them, that you can loosen and re-tighten. to bring the entire track either closer or further away from shed itself. most likely there is not simply 2 bolts but a few bolts you may need to adjust.
even on the normal up/down for each door. there most likely some adjustment there as well.
just be careful on these 2 old sheds here, total of 3 single sliders, and 1 double slider, if you adjust things to tight, come winter or summer either you will have problems opening the door/s, or you will end up with a bigger gap some place, and/or tear up trim work around the door itself.
