A sealing system for doors and windows includes a reservoir device, a sealing tube configured to expand and to contract, and a transfer valve configured to couple the reservoir device to a first end of the sealing tube. Responsive to either of a door or window closing, a medium may be transferred from the reservoir device via the transfer valve to the sealing tube. Responsive to receiving the medium, the sealing tube may expand to substantially seal a gap between an edge of either of the door or the window and a surface in proximity to the edge. Responsive to either of the door or window opening, the medium may be discharged from the sealing tube via the transfer valve. The sealing tube may contract in response to discharging the medium.