.

Then, should I insulate my ceiling?

In addition to walls and attics, insulation should be installed in ceilings with unheated spaces, basement walls, floors above vented crawl spaces, cathedral ceilings, floors over unheated garages or porches, knee walls, and in between interior walls—especially bathrooms—as well as ceilings and floors.

One may also ask, can I insulate my attic rafters? 4 Answers. You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation. You should be able to find them near the insulation in your home improvement store.

Beside this, can I insulate the underside of my roof?

You can do this by insulating the attic floor. But the best solution is actually to insulate both the attic floor and the underside of the roof. In this way you prevent the heat from the rooms below escaping to the attic rooms above.

What insulation do you use for ceilings?

The best option is to install fiberglass batt insulation. If you use the faced variety, the facing provides an effective way to hold the insulation in place, and it creates a vapor barrier that keeps the insulation dry. You can also use unfaced batts, but you have to add a separate vapor barrier.