A lot of home owners try to unblock their bathroom sinks themselves. Only to find they have broken their drain. Bathroom sinks get a lot of use. The plumbing becomes very brittle, and has a tendency to crumble when touched. There are multiple ways too plumb in a bathroom sink drain. When unclogging a bathroom sink you should be aware of what kind of drains you have. Lead, copper, cast iron, and galvanized steel drains normally get cut out so the blockage can be cleared with the cable machine, and then new drains will be installed, and everything will be back to proper working order. United Sewer & Drain specializes in this. Call us for any bathroom sink back ups you may have, we can help.