WRB——一个棘手的局面
我最近回顾了胶粘剂产品的ASTM测试方法。我正在努力(为地区6寒冷干燥气候和巨大的温度波动,-20到100华氏度范围)的改造。如果我要花大力气和金钱建造一堵可以让我引以为傲的墙,并且煞费苦心地使用连续的控制层,那么怎么能确定哪种产品最适合我的特定气候呢?ASTM测试是相当虚假的,在我看来并不能代表真实世界的建筑实践。现在是蒙大拿州的一月,我知道我昨天做的建筑不是在ASTM测试的75华氏度的温度下完成的!所以,我觉得我会相信你们这些有真实世界经验的人,而不是有行业标准(通过测试)的人。你用过什么胶带?如果使用得当,你个人看到它们用了多长时间?这个问题也适用于弹性胶带,我怀疑的头脑告诉我,它不会因为有记忆而想要恢复到原来的形状,或者因为拉伸太薄而失效。这个问题也适用于液体密封胶,我倾向于相信一些无法解释的原因。我知道有一个人,例如,他做了一些后院测试使用Huber Zip胶带,它仍然工作了10年。 Our combined Real world experience, however imperfect as it is in standardization, I feel is more useful than ASTM standards because at least we are attempting to adhere to things like concrete, OSB, or real wood. The dirty little secret is ASTM tests are conducted on adhesion to stainless steel. I don’t use a lot of that in my wall assembly due to budgetary constraints, but hey, my wall WOULD probably last 500 years if I did! Finally, for the very brave of you, can you share with us what you did WRONG when applying tape, house wrap adhesives or liquid applied product and how that specific product performed with improper application? I won’t shame you because you are honest and got a fish mouth for example, when you applied your tape. I am human too and make my share off mistakes believe me. As builders in the real world we deal with conditions that are not always perfect and even with the best intentions, we may not always follow best practices as they do in the building science lab. How long the adhesive lasted when applied wrong is useful information because one product may be more forgiving than another. Please keep your comments constrained to first hand experience or at least knowledge you feel confident we can trust. Please do not share with us what the sales representative told you. We all get enough of that. They are probably basing their info off ASTM standards at best or just want your cash regardless of how useful their product will be in your application at worst. Or perhaps they are just like me, and can’t come up with reliable real world experience over a long time span. Thank you in advance to those that care to share what you know.
GBA细节图书馆
根据气候和房屋部分,收集了1000个建筑细节
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下面是几个以wingnut方式完成的测试(包括Peter Yost最初的wingnut):
https://www.youtube.com/watch?v=dqnjklBuwrY(嘉宾Sharon Libby分享了他们在她公司做的测试)
//m.etiketa4.com/article/return-to-the-backyard-tape-test
//m.etiketa4.com/article/two-wingnuts-describe-their-backyard-tape-tests
我看到胶带失效的第一手经验主要是看到它不能粘在脏的、多孔的表面上,比如脏的、旧的混凝土。底漆可以起到一定的作用,既能填补孔隙,又能将污垢固化到位。
是的,有时候额外的努力/成本是值得的。从您第一次开始使用入门/磁带应用程序到现在有多长时间了,它失败过吗?你用什么牌子的?你的工作所在的地理区域是什么?你所在区域的费用大概是多少?