The maximum weight you can put on top of your RoofBunk Roamer and consistently open/close it is 7kg. If you are getting close to this limit, please avoid putting any items in the storage cargo net on the roof inside the RoofBunk. We also recommend for you to fully open the windows and doors when opening/closing it and help it up when opening it by pushing it up gently. All of these should ensure there's as little stress as possible on the gas struts!