Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing.
Putting insulation in ceiling.
When installing any type of insulation make sure that your contractor and his team don t cover up access points to your home s ventilation system.
The best way to insulate a drop ceiling is to install batt insulation between the ceiling joists before installing the hanging grid.
If you have an attic there are quick ways to insulate the ceiling from above after drywalling it.
If you don t have an attic however there is.
How to put insulation in a ceiling before drywall.
Work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just put in.
Not only that research by the u s.
So i suggest you put your time and money into improvements that have a bigger payback such as adding more insulation in the attic weatherstripping your windows and doors sealing cracks insulating the rim.
If you don t put the insulation around the back the pipe could freeze in the wall.
Department of energy shows that there s not much to be gained by insulating a basement ceiling.