Locate Leaks and Fix Them
Hunt gaps with a bright flashlight at night, a smoke pencil for drafts, and a friend closing doors to listen for change. Seal baseboards, casings, and window stops with acoustical caulk, and add putty pads behind outlets that share walls. For big undercuts, install a sweep or automatic door bottom. Re-test immediately, photograph improvements, and post a checklist so others can replicate your exact sequence efficiently.