I'd like to get some clarification regarding an issue I am having with my house and the missing moisture membrane between the sill plate and the foundation. My house has a vented crawl space and our builder had an engineer write a letter stating, "In Chapter 11, there is Table N1102.4.1.1 that list criteria for which air barriers are to be sealed. In this table underneath the component “Walls” it states, “The junction of the foundation and sill plate shall be sealed.” However, this would only apply to slab or sealed Crawlspace foundation conditions. This is explained earlier in the chapter when discussing the building thermal envelope." They also stated, "Given that the Crawlspace is vented on all sides, applying a sealant to the interface between the foundation wall and the sill plate would do nothing to improve the energy efficiency of this foundation system."
I live in South Carolina where the city goes off of the 2015 IRC not the SC version.
From what I have read, there is no mention of this in this chapter. Also, are there any other possible issues besides energy efficiency with not having the membrane there?
Any help would be great on this. Thank you.
I live in South Carolina where the city goes off of the 2015 IRC not the SC version.
From what I have read, there is no mention of this in this chapter. Also, are there any other possible issues besides energy efficiency with not having the membrane there?
Any help would be great on this. Thank you.