SHOULD I ADD ATTIC CEILING INSULATION?

Probably!
Insulating the ceiling is a simple job that will stop hot air from getting into your house while you’re running your air conditioner. 
Your ceiling probably already has some insulation. But if it was installed years ago when the home was built, it could have deteriorated, or the builder might have installed just enough to satisfy the building code of the day. Today, you need more protection from the heat because air conditioning costs are so high. 
In fact, if your home was built before 1984, it almost certainly needs more insulation. The U.S. Department of Energy estimates that only 20 percent of homes built before 1980 are wellinsulated. 
Also, if the insulation was not installed properly, or if it does not touch the surface it’s meant to protect,it won’t be effective. 
Are you uncomfortably hot indoors in the summer? Hear too much outdoor noise when you’re trying to relax in your home? Paying too much for electricity? 
Adding insulation can help resolve all of those complaints. 
Also, if you’re adding onto your home, ask your contractor to install thick insulation in the ceiling and walls of the new room. 
Utility companies recommend that the insulation in your attic should have an “R-value” of R-30 to R-38, depending where you live.The R-value measures the thickness of the insulation. It is also our professional opinion that you not exceed the R-40 rating for attic insulation; at that point you are going beyond the economic “cost vs. value” ratio.