Insulating Attic Raftes

Hire a pro to install spray foam insulation.

Insulating attic raftes.

Insulation if your attic is going to be converted into livable space then you will need to insulate the roof rafters. Place the plastic sheeting on top of the rolled insulation. In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.

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. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation. 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. Consumers are often told by spray foam contractors to do the rafters.

The ones i ve used are made of styrofoam and iirc they cost around 2. If you re not do the attic floor. If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space. You should only insulate your rafters if you have baffles installed to separate the actual rafters themselves from the insulation.

Garages built without attics are also prime candidates for insulation. If there is a floor you will need to remove it to properly insulate the roof rafters. You can use rigid foam panels or do as tom silva does with nearly all houses these days. 1a attic access door.

If the plastic sheeting is in pieces overlap the pieces by 8 inches and staple it in place directly to the roof rafters and the wall. You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. 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. If you re using the attic for living space then you need to insulate the rafters.

That s because it s easier for the contractor to spray than clean up existing insulation deal with any can lights or venting etc.