How To Insulate A Roof Without Attic

Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.

How to insulate a roof without attic.

The space between ceiling of the living space and roof must not trap moisture. This material fills up the gaps around. If you put cellulose up there it will help insulate but you need a vapor barrier above the ceiling because you ll have warm ceiling air hiiting colder roof surface and condensing which will turn the cellulose into a moldy mess. To install the air chutes staple them directly to the roof decking.

Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay. A new type of roof sheathing now commonly installed has reflective foil on one side to reduce ir radiation into the house from the hot outer layer of the roof. It must have pathways to dry out. To effectively ventilate your roof create a 1 in.

Water is insulation s enemy. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. 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. Staple them directly to the roof decking for better insulating roof rafters.

The right way to insulate attics and cathedral ceilings with batts using certain t. This foil is presumably impervious to water vapor. Box out light fixtures. Install high quality blown insulation into the ceiling.

Nail 1 furring along every rafter side against the roof deck. Lay a two by four on top temporarily compressing the insulation to a manageable. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. This material is thin and typically has impressive r values.

A professional can walk you through a few options that could work in these circumstances including. You may also insulate your roof to help regulate the temperature in an attic that is a part of your living space.