@Ankh Depending on the distance from the shed to the AP's inside the house and what the shed is made of may not get you the signal coverage to have a good mesh and could impact performance.
From one of the APs to the shed it is around 16-20 meters.
I've checked with inssider. The shed door has a glass and small metal splints (so i checked with the door open and closed).The rest of the shed is made with normal wood.
InsideOutside (door closed)Outside (door open)
@Ankh The signal strength is not optimal and may be intermittent and throughput may become an issue.