Replies

1. Expert Member
   Peter Yost|Jun 06, 2019 02:11pm|#1

   你需要空气密封普通墙。大多数涂料不能最初或随着时间的推移，在砂浆和砖的界面处形成的发际线裂缝处保持密封。

   If this wall either is or can be concealed, best thing would be a fluid-applied barrier, such as Sto Emerald Cote, such recommended here:https://www.jlconline.com/how-to/insulation/old-school-meets-high-tech-air-sealing-a-brick-row-house_o.

   Peter

1. 
   shinterface|Jun 06, 2019 10:49pm|#5

   Thanks Peter. Where can I tell my contractor to buy Sto Emerald Cote?

2. Expert Member
   阿科斯|Jun 06, 2019 02:32pm|#2

   通常，一层干墙确实良好的密封砖。旧校膏药甚至更好。

   If you want to have the exposed brick look, getting it tuckpointed and clear coat over the whole thing is about the only option.

   Lot of times the problem isn't in the bricks but the floor joists. Older building will have the floor joists pocketed into the wall, sometimes the floor joists from one place stick all the way through to the other place. Even if the floor joist doesn't stick through, there are usually big cracks and gaps in this area. Usually the only way to seal that up is dropping part of the ceiling and spray foam over the area.

   一个选项可能是尝试稍微向下加压。由于这种空气必须加热和冷却，它会花费额外的能量。小的正压可能足以让烟雾处于湾。您可以尝试查看它是否足够，通过后面的开放窗口吹来的盒扇吹。

1. 
   shinterface|Jun 06, 2019 10:53pm|#6

   Thanks Akos. The building has a 1st, 2nd, and 3rd floor, so I'm assuming I would have to remove the wood flooring near the wall and examine the floor joist.

1. Expert Member
   阿科斯|2019年6月07日01:18 PM|#8

   在开始之前，可能最好在天花板上的非显眼区域钻几洞。拉起地板工作，但通常比修补干墙更多的工作。除非您需要更换地板，否则天花板更容易。

   确保您检查每个楼层，我有一个没有阻挡3楼的邻居的地方（地板托托湾基本上在两侧之间连接）。建筑物的老年人，这些类型的问题往往是最糟糕的。

3. 
   Jon R.|Jun 06, 2019 02:36pm|#3

   +1使用压力。停止所有空气流量并没有太大。

4. Expert Member
   Zephyr7|2019年6月6日10:09 PM|#4

   First thing to do is to make sure there are no shared air ducts between the two spaces (buildings?). Damper off anything that is shared, but be sure you don’t inadvertently cause any problems for the system.

   接下来要检查的是，请确保两个空格之间的墙壁中没有任何开口。检查其他所有已提及的所有内容，还检查电气服务，有时会在墙壁上背靠背回来。

   If all else fails, try pressurizing the space slightly with outdoor air, being careful to position the air intake so that it doesn’t suck in any of the offending odors. A small duct booster fan running “backwards” is probably sufficient. Remember that regular wall/roof vents have dampers that will block airflow going into the building, so you’ll need something without a damper.

   Bill

5. 
   shinterface|Jun 06, 2019 10:57pm|#7

   Thanks Bill. Can you recommend a duct booster fan? Your post was very informative.
   -Danielle

1. Expert Member
   Zephyr7|Jun 07, 2019 03:33pm|#9

   我不能真正推荐任何特定的产品。我建议联系您信任的机械承包商，并要求他们推荐适合的风扇和管道安装。

   All you need to do is provide enough pressurized airflow going INto the building to cancel out whatever natural air intake there would otherwise be through cracks and leaks. You want to make sure the only air coming in comes through your fan, and that all the random leaks flow air OUT of your space. This way you're able to control what is coming in. Make sure there is an air filter on that inlet too, otherwise you're likely to suck in all kinds of random stuff (bugs, cottonwood fuzzies, etc.).

   Bill