How To Insulate A Ceiling Without An Attic

Nail 1 furring along every rafter side against the roof deck.

How to insulate a ceiling without an attic.

How to insulate an attic ceiling with no soffit vent 1. A cathedral ceiling requires some degree of roof insulation. Place the plywood sheets or boards across the rafters in the attic. Attach the baffles to the interior of the joists using a staple hammer and cover the wall plate area completely.

Figure out how much insulation you need for the area of the country in which you live by accessing the the u s. 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. If the finished attic is simply a storage area without the need for climate control you can leave the attic floor insulation in place but must forgo adding anything between the rafters. For diy attic insulation you ve got two choices.

It may be insulated to some degree at the roof but it is much more likely that your home is insulated at the ceiling and not the roof than vice versa. Put the baffle between the joists starting where they join at the exterior wall plate. To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes. Baffles are available in prefabricated models built to fit the measurements of your ceiling joists.

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. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Most codes require a specified minimum amount of headroom and it s tough to meet this requirement when insulating a finished attic especially since most. Later on we will discuss the differences between a cathedral ceiling and a vaulted ceiling.