I have a 1960s home with slab on grade constuction. There is a plumbing chase between the kitchen and bathroom about 8" wide where the copper exits the slab and runs to plumbing in the bathroom. Last year, the bathroom was remodeled and a new shower mixing valve was installed. There are copper lines that run approximately 2 feet horizontally outside of the slab, then 90 up to the mixing valve. The plumber used 1/2" compression style ball valves below the mixing valve that are accessed through a panel in the kitchen cabinet on the other side of the wall. The pipes are strapped in one place at a stud location before the 90 up to the mixing valve.

Recently, I insulated the exterior (8" portion) of that plumbing chase as there were some drafts. I also stuffed some fiberglass insulation around the inside of the tub from the other side. I tried to avoid making contact with the copper lines, but they may have been bumped a few times during this process.

My question is in regard to the strength of these lines and the compression valves. Did I compromise the integrity of the plumbing through my fumbling? I am not at all familiar with the properties of copper (obviously not a plumber!) There are no leaks, but as they say it is a lack of knowledge that causes worry.

Thanks for any insight someone can provide. This is a great forum.