How To Insulate Finished Attic Ceiling

Both of the above creates some spaces where a good amount of insulation can be installed and areas are created for ventilating under the roof.

How to insulate finished attic ceiling. Bib jan 21 15 at 16 32 it is a flat ceiling with a sloped roof over it. Don t mash or compress the insulation into the space. Instead of the ceiling following the slope of the roof all the way to the peak a flat ceiling can be easily installed by attaching joists horizontally across pairs of rafters. In these designs take out attic.

It is finished with drywall and there are no leaks thankfully. If only the living space will be insulated wrap the insulation around the room s walls and ceiling and then continue along the floor of the non living space. If building a knee wall for storage like karl did with this project make sure to insulate that area as well. Similarly a flat ceiling takes out the cathedral style slope of attic ceilings with joists that run parallel to the attic floor and are attached to roof rafters.

Use r 30 insulation for the ceiling and r 13 for the walls. If so you can create a dropped ceiling with insulation between the new ceiling joists. Install air chutes before installing insulation. Insulating a finished attic there are two basic ways to insulate a finished attic.

Insulate your finished attic properly choose your insulation. If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of. Plan to pull up the flooring and layer new insulation on top of the old. It needs a certain amount of loft to work properly.

So it s time to pay close attention to what s happening up there. In this case the area behind the knee wall will be uncomfortably hot or cold. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.