Attic Insulation -to plug or not to plug
AlinGalt
| Posted in Energy, Heating & Insulation on
Hi,
I’m in the process of insulating my attic with 4in R20 rigid foam. The house was built around 1900, with balloon framing (I think). There is no insulation in the walls or roof at present.
My question is – do you seal the air gap between the brick facing and the tar paper /sheeting where it opens into the attic? I am attaching a sketch of the situation (I hope it comes through).
Should the 4in foam be placed at position A, which leaves the air gap open, but provides a air seal into the attic, or position B, which would seal the gap?
Thanks AL
Replies
Greetings Alin,
As a first time poster Welcome to Breaktime.
This post, in response to your question, will bump the thread through the 'recent discussion' listing again which will increase it's viewing.
Perhaps it will catch someone's attention that can help you with advice.
Cheers
Peace out.
Edited 1/8/2008 6:43 pm ET by rez
Thanks
Al
I wouldn't. That lets air dry the back of the brick.
edit: and keep the pressure in the space balanced to prevent driving moisture into the structure.
Liberty = Freedom from unjust or undue governmental control.
American Heritage Dictionary
Edited 1/8/2008 6:47 pm by Hackinatit
Thanks.
I had checked just about every source at my local library. They all showed not blocking the venting in the sofit but nothing on the wall cavity.Al
Hackinatit summed it up.
That 1" or so fingerspace is a god send. (well, actually they knew what they were doing in the old days)
Keep it open