Rim joist is hidden by floor joist blocking
Hi, I am about to take on a basement spray foam insulation project in a house in PA built in 1934. What I recently found out is that when I look up above my foundation/sill plate in between my floor joists what I thought was my rim joist is actually just blocking between the floor joists. There was an old dry vent in place that I took out in preparation and that is when I realized the rim joist is another 6″ or so back behind this blocking. I am thinking if I just have the blocking sprayed it won’t be as good as if the actual rim joist was sprayed. Spent a lot of time googling this but found nothing so my first question is there a term for this type of basement/floor framing? Second, am I overthinking it and should I just have the blocking sprayed? Lastly, wondering if I can cut a hole in each bay so that rim joist can be sprayed? Not sure how big of a hole the insulation guy would need to get the gun in there to spray. Thanks in advance for any replies.
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