The drywall ceiling was insulated and the pipe was separately insulated even further as i say 360 degrees.
Insulation for water pipes in attic.
Ref insulate cold water pipes thoughtfully the frozen pipe was in the attic of the garage.
While pex does not ordinarily burst in the cold the water in the pipes can still freeze.
Water inside the pipes can still freeze.
For some homes the pipes will run underneath a subfloor or at the bottom of the attic.
Process for weatherizing pipes in exposed areas of the home such as the garage basement and exterior walls.
Shop pipe insulation here.
For other homes the pipes might be located in the walls or the roof rafters.
Insulation will help maintain water temperature levels in the pipes.
Find out where the pipes are located to see if a ladder is needed to reach them or if you will have to work on your knees installing the insulation.
It is important to insulate pex pipe in an attic particularly in cold weather areas.