Kitchen floor insulation
I thought I'd already posted this question, but I don't see it so... I live in a 100+ year old house. Removed old linoleum covering kitchen floor only to find a fir subfloor which finished beautifully. However, it is always cold. The kitchen sits on top of a low-ceiling cement 'room;' an unheated crawl space goes under the remainder of the house.
I thought insulation under the kitchen floor might make the kitchen (and maybe the rest of the house) warmer, but the pink fluffy stuff on a roll (marked "attic") does not seem to have done the trick. I thought I saw someone install under-floor insulation that looked more like stiff sheets of drywall or thin, rigid foam core on an HGTV/DIY program. Did my handy person use the wrong stuff? If he did, can we just nail the right stuff (stiff sheets of insulated boards???) on top of the pink fluffy stuff or do we have to rip out the pink stuff so critters won't make their homes there? Also, is a vapor/moisture barrier needed, and if so, where and what kind? I live in Oakland, CA.
Thanks a lot.