His sounds like a slab, doesn't need and can't dig a french drain.
【在 s******e 的大作中提到】 : 也可能是internal french drain吧。上个照片大家看看。
t*z
7 楼
就是concret slab跟墙之间的缝隙。大部分都有白色塑料泡沫,有一部分塑料泡沫不知 道怎么没了。有些地方塞着一些条状的东西。看来我用spray foam是不对的。。。汗。 。。还以为喷上以后可以隔水保温呢。 French drain是埋在地底下的管道,房顶上的水直接排进去的那种么?我见那个房子每 个排水的管道都是直接通到地下的。不知道这是不是french drain?
【在 m***y 的大作中提到】 : His sounds like a slab, doesn't need and can't dig a french drain.
m*y
8 楼
You only need an internal French drain when you have a basement below the water table :) If your weather is mild, I don't see you could be dead wrong with spray foam.
【在 m***y 的大作中提到】 : You only need an internal French drain when you have a basement below the : water table :) : If your weather is mild, I don't see you could be dead wrong with spray foam.
Right, we need to block all the possible entry way for animals. It's best filled by something resilient like epoxy. Spray foam might get fragile in extremely code weather, but good enough for DC. Actually, the fact you are on a slab indicates the weather is mild.