Insulating wall when running Copper Tube lines to an exposed wall face
Do not put insulation between the pipe and the inside wall (or floor or ceiling) surface. (Prior to putting on the drywall, etc. you should see the entire pipe as if there were no insulation at all.) If the pipe is mounted quite close to the exterior wall material, it is obvious that your R-rating shall be severely limited.
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.