Floor joist insulation / Discussions

...floor joists with 0.5in. foil faced foam board nailed to the bottom of the floor joists. I have not removed this insulation. Is this a problem waiting to rear it's ugly head? Protecting the underside a house built on piers from the elements must be done carefully, to avoid the very issues you are talking about. The way...

...floor joists of the upper floor. I am thinking some panels sealed in with insulation foam adhesive  For insulating the floor joist cavities in basements, you can use foam panels and you suggested. It can be busy work with a lot of cutting, but it works well and it is a lot cheaper and healthier for you than using the m...