If none of these materials is available to you you can always elect running toilet to soak rags or towels in hot water and wrap them around the frozen pipe. This will probably take longer than any of the methods previously mentioned.
Use the sandpaper to remove any loose particles from the hole. It is important for the surface to be properly prepared for these types of gutter water line repair.
After you have the stems out you should be able to find the washer on the "inside" end. If it is nicked, torn or brittle it is likely the cause of your drip. Even if it looks brand new, go ahead and replace it. You've already come this far. You can get replacement washers at almost any hardware store. Sometimes you may want to replace the whole stem, especially if the handle end is stripped out. It's best to just take the stem with you to the store and see if you can match it up. Most Do It Yourself stores have replacement stems for many popular brands. If your valve has a center diverter valve to switch the waterfrom the tub spout to the shower head the same process applies. Many times it is easier to replace the diverter stem than to repair it. This really depends on the design of the stem.
Service magic only let's licensed and insured tradesmen advertise on the site so that would be a great place to start. I would recommend getting at least three different quotes from different companies. This way you have an exact price of how much your works are going to cost and you will know exactly what you are getting for your money. You will also get the very best price for that work. Most plumbers will often try and sell you work that maybe you don't need as they are trying to make a living.
OQuality water line repair referrals from friends family or acquaintances can be an invaluable cog in the process. By getting referrals from people you trust, you can make your search a much faster process.
If you plan to replace fixtures, you may be able to do this on your own. Buy the same style or functional fit and then turn off the water to make the switch. Follow the directions provided by the manufacturer to get the job done.
The plumber you hire does not normally do heating but will do hot water heating or in floor heating in the house. Some places you can use the water heater for both domestic hot water and for in floor heating if the heating is a secondary heat. Check with your local plumbing codes on this to be clear.