Your home needs at least some type of insulation to keep the interior temperature of your home regulated regardless of the specific climate you live in.
Insulate a ceiling without attic.
Things needed stepladder tape measure utility knife staple gun and staples polyester twine drywall screws roofing nails.
Adequate ventilation is necessary to prevent too much heat and.
However don t make the mistake of using a lot of foam spray insulation as this stuff is expensive.
Always fix leaks before installing.
Instead most builders prefer a foam spray insulation either cellulose or urethane which can be placed into the ceiling using a spray can and left to dry.
Nail 1 furring along every rafter side against the roof deck.
Foil faced batt insulation is often used in cathedral ceilings because it provides the permeability rating often required for use in ceilings without attics.
Cut and insert 1 or thicker high r foam insulation sheets r 8 per inch against the furring giving a 1 or greater air path between the insulation and the roof deck under the cathedral ceiling.
This density prevents air from carrying damp into the insulation.
A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel.
Make sure that your house is properly ventilated.
In an attic without soffit vents you can add insulation in the corners and the wedges between the slope of the roof and the floor of the attic which serves as the ceiling for the room below.