https://centralplumbing.co.nz/blocked-drains/ Rigid copper is used for main water lines in many homes. You cannot bend rigid copper, so joints and tees must be soldered on. When soldering, always apply flux (also called soldering paste) to both surfaces. Flux retards oxidation when the copper is heated. Always use lead-free or nearly lead-free solder when sweating a copper joint. You always want to solder correctly, the biggest mistake most people make when soldering is failing to get the interior of the fitting and the exterior of the pipe clean and shiny. Polish these surfaces with a fine emery clot until bright. When soldering, never heat the pipe, but instead heat the fitting. Doing so allows the solder to be drawn into the fitting by capillary action. To winterize a house that will sit unused during the winter months, you must completely drain all of the pipes. After turning off the main water supply, let all of the water drain from the faucets, toilets, and water heater (turn off the gas). Add a quart of antifreeze to sinks and the tub to prevent water from freezing in the drain trap. Unclog drains with ease. Try using a plunger and drain cleaner, as your clog may simply be a build-up of hair and debris. If this doesn't work you may have to clear the drain with a snake. Feed the snake into the drain line as far as it will go. Turn the crank gently, which will help to loosen the clog. Remove the snake, and run water down the drain to see if the clog has been removed. You may have to use the snake a couple of times, before the clog is cleared so don't give up! Always keep your garbage disposal clean. You can do this in many ways. Pour some dish soap in and let the disposal run for a few minutes with some cold water. Be sure to run it regularly, if not, it can cause rust. To eliminate foul odors, grind lemon or other citrus peels. You can clean the walls of the disposal by grinding small fruit pits or egg shells. Be sure that the dryer's lint trap is clean. This