Need help with this one! But I have too much pride to hire someone for the job. I also am a handyman by trade, so I am comfortable with this repair.. with a little direction.

South florida home. CBS construction. Found a few ounces of water in my garage. Traced the water back to the wall behind my washer. Opened the wall. Found the water coming from a copper pipe that comes out of the slab floor. Its 1/2" flex copper thats encased in black plastic tubing. I cut away the tubing to the slab to make sure the leak wasnt coming from above.

Clearly the leak is coming from the slab. But rather than opening up the slab with my jackhammer.. and really ****ing off my wife... i figured I would try to reroute the line.

Follow me for a second. Here is the layout from top to bottom. 1/2" copper coming out of the ground. T's off in two places to feed a sink and also a washer. THEN IT TURNS INTO 3/4" COPPER and continues UP into my attic.

So correct me if I am wrong... but I can cap it before the ground... figure out what room no longer has water... then drop in a pipe from the attic?

Thats the easiest solution, right????? I DO own a jackhammer.. but what scares me is the fact that with that plastic tubing.. there is no way to say for sure how far away the leak is.... could be 50 feet from where its coming out. Would follow gravity.....

HELP PLEASE!!