Insulate A Ceiling Without Attic

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.

Nail 1 furring along every rafter side against the roof deck. However don t make the mistake of using a lot of foam spray insulation as this stuff is expensive. Foil faced batt insulation is often used in cathedral ceilings because it provides the permeability rating often required for use in ceilings without attics. Typical ceiling insulation involves spreading either loose fill or batt the term commonly used for blanket insulation within the attic or airspace of a home.

Plug leaks to prevent air from getting in and out in areas around windows and doors. This density prevents air from carrying damp into the insulation. 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. Things needed stepladder tape measure utility knife staple gun and staples polyester twine drywall screws roofing nails.

A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel. 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. Wear long sleeves and pants work gloves safety glasses. Always fix leaks before installing.