How To Insulate Rafters In Attic

Lay a two by four on top temporarily compressing the insulation to a manageable.

How to insulate rafters in attic. Place the plastic sheeting on top of the rolled insulation. If only the living space will be insulated wrap the insulation around the room s walls and ceiling and then continue along the floor of the non living space. In this case the area behind the knee wall will be uncomfortably hot or cold. 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.

If you have questions about your attic give us a call at 1 800 516 0949. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. Spray foam insulation that s convenient and easy to use. There are two basic ways to insulate a finished attic.

Get your kits the easy to use spray foam kit. For rolled insulation place it between roof rafters. Don a long sleeved shirt safety glasses gloves and a dust mask to prevent irritating fiberglass from reacting with. Then feed the rolled insulation under wires and pipe if either is present.

Hire a pro to install spray foam insulation. You can use rigid foam panels or do as tom silva does with nearly all houses these days. Staple it to the rafters or scabbed on boards with a staple gun so that the paper backing is toward the interior of the room to act as a vapor barrier. R value of 7 in 1 inch 97 closed cell foam.

Use closed cell foam it green for attic rafters. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Attach baffles to the bottom of the roof sheathing the plywood or solid wood strips onto which roofing material was installed.

How to install rafter insulation. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. The best attic insulation. If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts.

Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass.