Replies

1. GBA Editor
   马丁·霍洛拉|Feb 15, 2019 05:40am|#1

   Brad,
   There are a couple of issues you need to consider:

   1. The interior sheathing helps brace the walls. If you remove the interior sheathing, you need an alternate plan for bracing -- so you may want to talk to an engineer.

   2. Between the interior face of the bricks and the studs, you ordinarily need an air space backed by a water-resistive barrier (WRB). I can see in your sketch that you've done your best to address that need. For more information on this issue, though, you may want to read this article:"Insulating Walls in an Old House With No Sheathing."

1. 
   Brad Willson|2019年2月15日12:01 PM|#4

   Thank you for the info. Will definitely have to contact an engineer

2. GBA Editor
   Peter Yost|Feb 15, 2019 06:46am|#2

   嗨布拉德 -

   You need to be completely sure about the relationship between the framing and the brick veneer. Is there a 1-inch air space between the brick veneer and the outside face of the studs? Would your WRB be discontinuous at each stud?

   I am having a hard time understanding just how the studs are sound and dry based on your drawing and if you insulated from the interior as planned, you are going to make your framing and anything to the exterior colder and LESS likely to dry.

   Peter

1. 
   Brad Willson|Feb 15, 2019 12:22pm|#5

   There is a 1" gap between the brick and the studs and yes it would be discontinuous, would the certainteed membrane be an option to help promote drying?

3. Expert Member
   Akos|Feb 15, 2019 10:58am|#3

   Brad,

   When insulating brick houses, you always have to be mindful of the quality of the brick. There was a lot of variation at that time and some brick are very soft. Before doing any insulation, it is best to check around the neighborhood for similar homes with the same type brick. If you see a lot of spalling, I would be wary of insulating too much.

   现在你的提议的细节。第一次切ck with a structural engineer what to do with the interior sheathing, drywall is considered bracing in the OBC and you might be OK.

   Old balloon framed homes are extremely leaky (last I did an energy audit on one, 60% of the heat loss was from air leaks the rest was insulation/doors/windows). This is the most important item you need to deal with especially where the floor and ceiling joists are supported.

   如果你对泡沫的好的话，我认为最好的是将房子包装到螺柱托架的背面，喷洒整个墙壁。这将密封螺柱以及地板托梁。开放式电池/闭合电池取决于您。使用闭合电池，您可以获得稍高的整个墙壁R值。

   就你的细节而言。旧铆钉通常是真正的2“x4”，矿棉贝蒂不适合无修剪。这是一个极其劳动的密集部分，它是一部墙的一小部分，这将是痛苦的整个房子。在这种情况下，玻璃纤维可能更容易。

   Strapping plus rigid is also hard, you would have to trim the insulation to 14.5" width to get the 16" OC. You are better of with going with something like bellow to get the studs up to 5.5" thick and going with 2x6 insulation batts.

   https://www.finehomebuilding.com/2014/11/26/breaking-the-thermal-bridge

   您还必须使用空气控制层（在这种情况下的干墙）解决地板托床。