Make sure you clean out overflow holes in your kitchen and bathroom sinks on a regular basis. These holes are intended to act as an emergency fail-safe to prevent spillage from a full sink, but if they are clogged they can't do their job. You can clean out an overflow hole using the same techniques you would for a clogged drain.
Do you have a frozen drainpipe? You can use a garden hose to thaw it out. First of all, remove the trap from the drainpipe and insert the hose until it will not go any further. While lifting up the other end of the hose, pour hot water down it. Keep pouring hot water down the hose until the drainpipe thaws. To save time with cleanup, keep a bucket underneath to catch the water that overflows.
Heat up frozen pipes carefully if they have frozen. In colder regions, pipes placed closest to outer walls and ceilings could freeze if not properly insulated. Use hot rags, hot water, a blow dryer or similar heat source. Start heating at a place nearest the tap, then work backwards.
When you are using your disposal you should always run cold water not hot water. You should run the cold water as long as the motor to the disposal is running. Always avoid overloading your disposal. Things like corn husks, onion skins, celery and other high fiber foods could clog your disposal.
To prepare for the cold weather, properly drain all outside faucet bibs and turn off the water supply to those faucets. A piece of foam taped to the outside bib can provide excellent insulation to prevent any remaining water from freezing or splurge for a specialty cover that comes complete with velcro closures.
Never try to undertake a project that you are unsure of. Additionally, never call on a friend to help
bellplumbing.com you with something, if they are not a professoinal. There have been hundreds of good friendships ruined by a guy claiming to know exactly what he is doing, when the truth is he is clueless.