What type of insulation should I use between basement floor joists?
I need to insulate my basement walls in between the 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 more common solution of spray foam.
I don't know your climate zone, but if you are in a cold climate I would suggest several inches thick of EPS foam (at least two will act as a vapor barrier), and more is better if you have the space. I would cut them to size, squeeze them in as tight-fitting as possible and foam any gaps.
EPS foam is a less environementally harmful option than XPS foam, but either will work. If they are deep cavities you can even put batt insulation in first.
Hi Mike,
Sorry for barging in...
With lots of electrical & electronic cables all over, that would be a daunting task.
I thought the new polyurethane with the HFO spraying agent was eco-friendly??
- Ronald
Yes, that is an application where it sometimes can be beneficial, but still when it goes wrong it can go really wrong. I would keep it as an option if necessary in some cases as you mention, and I would be careful to get a reputable installer.