Plumbing pipes and fittings in modern bathrooms are predominantly made from some type of plastic material along with supply lines made of copper but it was not always so. If your home was made before 1950, you more than likely have cast-iron drainpipes with galvanized steel water supply pipe lines that sometimes even included branch drain lines too. The only problem with this material was that even though galvanized pipe is extremely strong, its shelf life was only about fifty years due to the fact that the joints frequently rusted and leaked and the build up of minerals in the pipes reduced water flow and occasionally even clogged the channel. Read the rest of this entry »