| 摘要 |
A sealing apparatus 14 for mounting an end of a joist within a wall 12, including a sleeve 16 for receiving the end of the joist and configured for location in an aperture through the wall, and means such as flange 30 for creating a seal against the wall to prevent passage of air through the aperture adjacent the joist, e.g. if the joist were to shrink with age. In other embodiments, a two part telescopic device for differing wall thicknesses has a flange at each end, optionally with one flange in the form of discrete tabs (Figs 4 and 10, not shown), a device has a break -out portion to receive a joist strap (Fig 8, not shown), and other variants lack the sleeve, either fitting around the joist (Fig 5, not shown) or abutting its end (Figs 14, 16 and 18, not shown). |
