I had connected my garden hose to the outside tap to wash my car and I usually shut off the water from the outside tap and the inside shutoff valve (basement) after I am done. I noticed today that when I turn the dial closed (shutoff valve)the water was still going to the outside tap... Luckily the outside tap shuts off the water.
I just wanted to know what might be causing the problem with the inside shutoff valve and if I needed to replace it... How much would something like that cost if I had to call a Plumber? Has anyone else had this issue and fixed it by themselves? I have no plumbing experience... :-(