Abstract: A window construction is disclosed wherein a unitary vinyl seal 36, corresponding in shape to the window sash 20 and frame 18, is employed to seal the translucent panes 28, 30, 31, etc., in position. Double-backed adhesive foam tape strips 38, 40, 42, 44, 45, 46, etc., serve to sealingly bond vinyl seal 36, 36a, and 66 to the translucent panes, the associated sash 20 and frame 18 structure. Replacement of broken panes involves cutting around the periphery of the broken pane (FIGS. 6 and 7), removing the cut segment, installing a replacement pane and sealing it in position. The same segment of vinyl seal 36 removed, or a new seal 66 cut or formed to the same dimensions as the segment cut away, is employed to seal the replacement pane 28a in position. Sealing of the new seal (FIG. 7) is accomplished by an essentially triangular strip of adhesive foam tape 68 having adhesive on all surfaces thereof. Similar replacement seals can also be formed from the embodiments illustrated in FIGS.