What can i do when my water pipe appears to be frozen

Although I've lived in Florida for many years we moved down from Wisconsin.  There several methods   we used to thaw out frozen pipes.  If the pipes were exposed we used a propane torch with a jumbo tip to heat up the pipes.  If there were a danger that the torch would be a fire hazard they make a electric pipe wrap sort of like a electric blanket that we would wrap around the pipe, turn on the electricity and wait for them to thaw out.  While they don't sell them here I'm sure Home Depot has "pipe warmers" to choose from if you need them.  Lots o' luck up there in the frozen North.  Tom

Many houses have caught fire from trying to thaw frozen pipes. Likely you are in the Northeast with the terrible storm. If it is up inside a wall, there may not be much you can do, except wait for the weather to moderate. You could try heating a pipe exposed in a crawl space or somewhere. A hair dryer is safer than anything else, but not real effective. Leave the faucet turned on. If you manage to thaw it enough for even a trickle to run, the flowing water will thaw the rest. With metal pipes, you can use a torch. With a torch, you can over heat a joint and have it pull apart. Watch what else you are heating with the torch, and keep it moving. The pipe will conduct heat to spots you can't heat with the torch.

It is a little late to tighten up the house now. You could tape over cracks, and pile snow (likely you have plenty) around exposed foundations. Warm up the area with a space heater. Using too small of an extension cord is another way to set the house on fire. You could buy a heating tape and put on the pipe. Follow directions, they set houses on fire too.

Finally, call for help. When using a torch in tight places, nothing beats experience. There are also pipe thawers. These are electrical. Apply a large electrical current to a metal pipe, and it heats up. Likely there is a long waiting list today. Get your name on it now. You can always call back and cancel if the pipe thaws out.

Freezing pipes not only stops them up, but can burst them. Watch for leaks and dampness after things thaw. A small undetected leak can cause structural damage. Dry wall doesn't take wetting very well.