谢谢你的回应。虽然我认识到刚性泡沫是最好的，但在我所拥有的情况下，有限的访问（小型通道孔）或有限的工作空间（在膝盖墙后面）。I could use either thinner foam panels that were more flexible (1/2", e.g) or cut the panels into strips, but then that seems to be opening up a lot of seams (which, though sealed with tape, I would think reduce the quality of the installation). And, of course, the foam panels are not cheap. So I was thinking the housewrap would be better than nothing (worth doing?). As an alternative to house wrap, could I use a poly barrier with a few slits cut to allow moisture to escape, or would I need to cut so many slits to do that that it would make it ineffective against air movement?
答案
肯特，
根据能源之星家园计划的要求，以及建筑科学家的建议，玻璃纤维BATT绝缘应由所有六面的空气屏障封闭。（此规则的唯一例外是阁楼底板上的玻璃纤维绝缘，在那里通常更便宜地使绝缘更加便宜，而不是安装顶部空气屏障。）
Housewrap将工作，虽然很难将家庭包衣作为空中障碍。刚性泡沫（例如，面对箔的多异氰脲酸酯）通常是更好的选择。因为Polyiso具有显着的R值，所以它通常不会变冷足以用于开发凝结问题。所以，2英寸厚的Polyiso在寒冷气候中为膝盖墙体优于1英寸厚的Polyiso。
有关更多信息，请参阅两种绝缘阁楼kneewalls的方法。
谢谢你的回应。虽然我认识到刚性泡沫是最好的，但在我所拥有的情况下，有限的访问（小型通道孔）或有限的工作空间（在膝盖墙后面）。I could use either thinner foam panels that were more flexible (1/2", e.g) or cut the panels into strips, but then that seems to be opening up a lot of seams (which, though sealed with tape, I would think reduce the quality of the installation). And, of course, the foam panels are not cheap. So I was thinking the housewrap would be better than nothing (worth doing?). As an alternative to house wrap, could I use a poly barrier with a few slits cut to allow moisture to escape, or would I need to cut so many slits to do that that it would make it ineffective against air movement?
此外，一堵墙是2x4壁W / R-19绝缘，因此泡沫板将压缩绝缘体（我将假设意味着我不应该这样做）。如果我能用刚性泡沫，我应该使用什么样的机械紧固件，或者粘合剂足够？
肯特，
如果您决定安装刚性泡沫，则应使用盖指甲（带有大型塑料垫圈的钉子连接）固定。
如果你无法设法在紧的空间中刚刚泡沫，那么房子是一个不错的选择。它值得安装HouseWrap。