Insulating a crawl space
I have a summer "lake house" which was built in the 1970's. The house is built on a slope, with a crawl space that has a dirt floor and is narrow in the back and high enough for a person to "stand" on their knees in the front. All the pipes (water and waste) are in the crawl space, and I would like to now insulate it so the house can be used year round (presently it's not winterized and is used only in the summers). How do I insulate this area?