[ATTACH]8783[/ATTACH]I am not 100% sure I am even using the right terminology. My first floor near the outside wall is always cold, especially in certain areas. I decided to pull the drop ceiling. Most of the areas have some fiberglass insulation bats just put into the spots. I have an area in my kitchen that has a out cove for a table, so from the basement wall to the outside wall is about 3 feet so a lot harder to get into. I noticed that in a few areas there are vents running outside, I believe the kitchen exhaust pipes. The issue is they cut holes in the outside wall and didn't insulate so it just fills with the cold outside air. My issue is I am not sure how to insulate it, I can stuff fiberglass in there but I believe it is not ideal to condense fiber glass. I am not sure if you can get DIY spray foam in there since it is 3 feet away. At least I haven't seen a product that goes that far. Any thoughts.

We had a company come in and take a look at our walk-up attic which has a floor of plywood approximately 11' x 20' and your basic fiberglass insulation on the floor. The contractor said he would put a 4" thick piece of graphite-infused EPS on the existing floor and then 1/2" OSB on top of the foam. In addition, he'd create a dam installing an OSB fence, essentially, around the perimiter of the attic and blow in about 12" of cellulose on top of our existing fiberglass batt. This would be done only after they've air sealed the attic floor. My first concern is with that 4" of EPS that will detract from the height of the storage space in the ceiling by a minimum of 4". Also, will the weight of our storage stuff compress this EPS over time? Is 12" of cellulose enough since it, too, compresses over time. We live in the Northeast were it's been down in the single digits, so we need serious insulation in this attic. The next concern is with the attic door. It's a walk-up attic and even though the attic floor may be insulated, we're still going to get cold air flowing in through the baffles which would just drop down into the stairway. He told us to open up the back of the stairway by means of a bedroom closet, and attach rigid foam to the risers. We're very hands-on, so the work doesn't bother us, but is that really the best way to insulate that staircase to the attic? How would other people considering insulating their storage space in the attic?