Without properly insulating your finished attic room will also be cold in the winter.
Insulating finished attic floor.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
If it is and you plan to provide heating and cooling to the finished attic space you need to remove.
If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space.
With a finished attic insulation must help keep the attic areas comfortable.
In both these situations insulating the attic floor will retain the heat in the house below it and leave the attic cold.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below.
Affix rigid foam insulation to the attic side of the hatch or door.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
Attic hatch or door.
1a attic access door.
Pull down stair or ladder.
Since parts of a finished attic are usually very close to the roof insulation often blocks proper ventilation that is needed under a roof structure.
On the other hand if your attic is finished and currently.
The attic floor which is the ceiling of the living space below often already is insulated.
That means insulating the attic floor only not the walls and having vents in the roof.