I am "redoing" an old bungalow that is up on piers and is located in West Central Florida. There was no insulation between the floor joists, and I am wondering what is the best type to use in a Florida bungalow. I have replaced a bunch of the joists, and they are now on 16" centers. I have not yet put down my 3/4" plywood sub flooring. I would like to use 2" rigid foam insuation and fit it in before the plywood goes down. Does anyone know if this is a viable and effective insulation for this application? Batt insulation will be attacked by insects and rodents. The house is well shaded and stays cool, but I want to do it right while I have the opportunity. Any and all help is greatly appreciated!