It depends upon how you setup the system, but you should be able to get a much better signal out there. I would put the first Orbi at your modem location, the 2nd Orbi near the edge of your house towards the shed (make sure that Orbi has a good signal to #1), then put the third Orbi at a place in your shed that has a good connection to Orbi #2. With some experimentation, you should get a decent signal in your shed and everywhere in between. In addition, if you have any ability to run a network cable from Orbi #1 to Orbi #2 (or #3 for that matter), then you can eliminate some of the wireless backhaul work and will improve throughput. However, the Orbi system seems to relay pretty well through the wireless backhaul and will tell you whether it has a good signal or not.