Tape job blew out in a rental unit, guy blamed my mud mix
Last month I finished a ceiling patch in a duplex over in Fresno, used the same 90 minute mud I always run. Two weeks later the tenant calls saying the tape is peeling right down the center seam. I go check it and the paper tape lifted clean off, but the mud underneath was still soft. Turns out the guy who framed that closet put the vents right above the seam and that ceiling gets direct sun through a skylight all afternoon. The heat cooked the joint before it ever cured right. I had to cut out 14 feet of tape, re-mud with setting compound, and run a fan up there for two days. The owner still tried to say I mixed it too thin. Anyone else run into tape failures that were really a framing or vent problem, not a mud problem?