Reclaimed and factory second rigid foam
I have seen a couple of recommendations here and there on obtaining reclaimed rigid foam. One post actually mentioned the Syracuse area, close to where I live, so I checked craigslist as they suggested and sure enough there was–new, reclaimed and factory second rigid foam.
If appropriate, it would be used on new construction in the Finger lakes region, under and on the below grade walls of a full basement. Possibly under a garage slab, but I am not sure how necessary rigid foam is under a garage slab because it is a topic I have not thought to research until 5 seconds ago. From what I learned reading other posts, I would need 4″ rigid foam for under the slab, can’t remember how to determine what I would need for the walls, but I’m sure I have read it somewhere on here.
Q1: Would reclaimed or factory second rigid foam be a reasonable solution for a basement slab and exterior walls based on the description above?
Q2: What are the cons of using reclaimed or factory seconds?
Q3: What should one be looking for when they inspect the foam prior to purchase?