i want to insulate my basement ceiling, my basement is heated?

Question

need to no if i have to use faced or unfaced,an will i get condensation

Answer 1

You're more likely to see condensation on your ductwork.

I also recommend using the faced insulation.

For the duct work, use a duct insulation, and cover it with a plastic wrap (usually comes with the duct insulation). Seal it all with a good tape, and it should prevent moisture from reaching your ducts. This will also help with delivering your air to the vents, by the way, whether it be hot or cold, the air will be closer to the temp being kicked out by your central unit.

You should also consider a dehumidifier for your basement, to keep down on moisture being leached into the space thru your concrete walls or floor.

If you have NOT finished the space out yet, then consider putting a vapor barrier over the walls and floor. If you have already finished it, then rely on the dehumidifier.

By the way, you can purchase faced insulation in varying widths, be sure to get the width that will fit your joist spacing.

Have Fun

Answer 2

Use the paper faced fiberglass insulation. The paper face has flanges that fold out over the studs. The flanges will need to be fastened with staples to the floor joists . Unroll measure and cut to length needed. you shouldn't need moisture (vapor) barrier on the ceiling. However you should put up a vapor barrier around the perimeter of the exterior walls, this is where the moisture is going to come from. If the space above the concrete wall isn't already insulated cut pieces to fit and stuff these spaces as an added heat saver.

Answer 3

not a good idea...the escaping heat will only help heat the rest of your house...