Crawl Space insulation

[dandynick5]

My cottage has a crawl space about 24 inches deep. The walls are uninsulated cinder blocks. The floor is 1-2" gravel. The joists have 1-1/2 inches of styrofoam sheets attached to their undersides. The floor of the cottage gets cold and I'm wondering what steps I can take to warm it up. The crawl space is above grade but there is no heat in the crawl space.(We heat with space heaters) Should I go with Fibreglas in the joist spaces? Or along the cinderblock walls? Let me know what everyone thinks.

[underscore]

If you end up needing some of that fluffy pink stuff, I've got a mountain of it you can have for free. Some clown "finished" a storage room in my house before I bought it that I had to take back down to studs so I have a big pile of the stuff that's only a couple years old and I feel bad throwing it out.

[dandynick5]

Um, might be a little costly getting that all the way back here. Not that I wouldn't love a trip to the Okanagan!

[underscore]

Derp, I failed to notice you're location. Ignore my previous post.