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在我家的门和窗户没有头闪烁。我可以添加这个缺少的保护呢?
-David狼,通过电子邮件
麦克格廷:头从在壁板的底部边缘和头部装饰件的顶部之间的接头中泄漏闪烁防止水。你并不一定能找到头闪烁的窗口和具有整体式法兰,因为一些制造商呼吁它和一些不门。这或许可以解释为什么你没有看到任何关于你的门窗。这是常见的做法,以密封这些单位在墙上用自粘防水带材,然后一圈房屋包层在上面。你不能去错加顶部防水,但是。对于法兰窗户和有独立的装饰包围,但没有头闪烁在装饰门,这将是一个好主意,安装一些。您可以去除装饰,而不移除它上面的壁板,让您重新安装装饰前溜头闪烁waterresistive屏障后面。在这之前,不过,可以肯定在1/4削减壁板当然了,在1/2。离开壁板的底部边缘和顶部防水之间的空间。这个空间将允许水自由排出。的金属或塑料头闪烁应具有至少4的壁腿,尽管壁腿短于那个长度可以通过结合闪烁胶带给它的条带延伸。 The cap projection should be sloped downward 10° to 15° to readily shed water. Bend the drip leg down at least 3⁄4 in., and give it a slight inward bend. Finish the drip leg with about a 1⁄4-in. outward bend at the bottom edge. You can form end dams to keep water from dripping off the ends of the flashing and getting behind the siding. After fastening the cap flashing to the walls, lap the housewrap over the wall leg. You also can take the extra step of flashing the window and door heads with flashing tape before installing the head flashing. The tape backs up the head flashing in the event that wind-driven water gets behind this primary layer of defense.