| 摘要 |
A method of mounting a piece of equipment (20) in sealed relation to an opening (16, 17) in cladding (10, 12) of a building, for example a ventilator in a roof. Conventional flashing between the top transverse edge of a base flange (21) of the equipment and the cladding (10, 12) is replaced by a preformed sealing material (34), sandwiched between the top transverse edge of the base flange (21) and the cladding (10, 12), and a fillet or fillets (50) of an initially pourable or shapable sealing material, formed along the top transverse edge of the base flange (21), which becomes sealed to the preformed sealing material (34) and the cladding (10, 12) after hardening or setting thereof. The preformed sealing material (34) is profiled at its underside to accommodate the profile of the cladding, and may also be provided with depending sealing lips or bands (36, 37 - Fig. 5) to improve sealing. The preformed sealing material (34) may be in elongate strip form or alternatively it may be composed of separate segments (45) assembled together (Figs. 4 and 6). The preformed material (34) and the fillet forming sealing material (50) may comprise a polyurethane elastomer. |
