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Barn remodel exterior wall detail

lhbasle | Posted in Energy Efficiency and Durability on

My son is converting a 130 year old barn loft into living quarters.  The exterior is roughly open 2×4 wall on 24″ centers with exterior planking and a LP type siding material over the original planking. I am working on a wall detail to try to get this up to R19 with a rainscreen.  Any thoughts on using house wrap or similar rainscreen material installed from the inside and wrapping each stud to get from bay to bay, then insulating with fiberglass.  We will be using some interior studs to square up the original wall probably going horizontal with these.  The location is Zone 5 northern IL.  Thanks, Lee

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  1. GBA Editor
    Brian Pontolilo | | #1

    Hi Lee,

    I am a bit confused by your question. You are leaving the exterior sidings and want to create a rainscreen from the inside of the barn? I've not heard it called a rainscreen before, but when insulating walls without sheathing, it is common to leave an airspace between the siding and insulation. You may find this article helpful: Insulating Walls in an Old House With No Sheathing

    If I am misunderstanding what you are planning to do, please clarify.

  2. lhbasle | | #2


    I am working through articles, as the linked article links to several others. I probably should have said WRB instead of rainscreen. I was also considering the method described in the article of small strips in each bay with rigid foam behind then some sort of batt insulation before the drywall. There's also a hip roof that has an 8'x8' flat portion at the highest part that will end up being a four slope faceted cathedral with a flat section at the top. My thought is to leave a near continuous soffit opening and use as many flat box roof vents near the top.

  3. GBA Editor
    Brian Pontolilo | | #3

    Hi Lee.

    I hope you are finding the articles helpful. Without more info on the roof like depth of rafters, insulation plan, etc. I can't comment on the venting. Have you read this yet? How to Build an Insulated Cathedral Ceiling

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