How to unfreeze pipes?

My pipes leading to my bathtub have been frozen for 5 days now. As far as I can tell they have not burst, but it is very inconvenient, this being our only tub. Toilet still works but not the tub, which is closest to my crawl space. It is very hard to get under the space, so I cannot use a hair dryer under there. What should I do to unfreeze them?

The crawl space is covered pretty well, but I may have to cover up some more to stop the cold air from getting in.

How to unfreeze pipes?

Heat the space slowly with a space heater and the faucets open, eventually you will have to go underneath to insulate or heat tape the pipe.

How to unfreeze pipes?

If I were you I would call a plumber ASAP. I got home yesterday evening to a burst pipe. The clean-up crew was here until 3:30 in the morning and my bathroom has been totally gutted, thank goodness I got home when I did or a lot more then my bathroom and basement would have been damaged. That is definitely one headache I wouldn't wish on my worst enemy. Good luck

How to unfreeze pipes?

hot water and degreaser

How to unfreeze pipes?

Assuming the pipes are PVC put a space heater as close as possible ,keeping in mind combustible material such as floor or joists or trash.and give it time . Keep from worrying by feeling surfaces near the heater to reassure yourself .the pipes are not going to melt and other surfaces are not going to burn . Leave a faucet open wide so you can hear when it breaks loose.After wards get some pipe insulation tubes and cover them .

How to unfreeze pipes?

If you can see the pipes ,tape a hair dryer to a long pole and try to thaw them that way,since you can't get under the house.I know that sounds a bit strange,but sometimes you have to improvise...