What should I use to cover a gap between my floor and wall?

We just bought a house and pulled up the carpet in the living room, which has hardwood floors underneath. But now we have about an inch gap from where the floor is to where the wall starts what should i use to cover it? It has a pretty good breeze because we only have a crawl space no basement! HELP!

baseboard and quarter round moulding

go to Lowes or Home Depot, buy enough caulk to seal the deepest part of the crack, also buy 1/4 round molding in a dimension tall enough to hide the crack, cut to correct lenght and install. Nail up with finishing nails AFTER you have pre-drilled the nail holes. If you don't pre-drill...you will split the molding.

baseboards

probably worth filling in cuz you never know what could crawl from your crawl space into your house. cover with molding/trim.

that is what trim is for.

All these answers are pretty good, but they forgot to tell you to insulate outside walls. Buy some of the pink stuff and stuff it into the gap between the floor and the drywall. then install your molding and shoe molding.

Baseboard/trim would be an appropriate treatment. If your crawl space is ventilated, you might consider stuffing foam rope type insulation before you cover it up.

I wouldn't recommend spray expanding foam for this. It might make future electrical work more difficult. Tough to say for sure when you can't see it.

Some sort of molding would be good - or quarter round id you can get it large enough

Look around at the selection of baseboards available and see if you can find one thick enough. If you cannot, you might have to go for a combination effect. Our walls have a thick baseboard and then a quarter round piece at the bottom that gives a nice look and it is more than an inch overall.

Insulate the gap well with either a foam insulation, my choice, or handfuls of fibered insulation. Then put down a baseboard and 1/4 round if you want. Home improvements stores have some really nice looking baseboards now, with corners and such so that you can use butt joints and wont even have to mess with 45 degree angle cuts.