How To Insulate Rafters In Attic

Spray foam insulation that s convenient and easy to use.

How to insulate rafters in attic.

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. If you have questions about your attic give us a call at 1 800 516 0949. Don a long sleeved shirt safety glasses gloves and a dust mask to prevent irritating fiberglass from reacting with. Lay a two by four on top temporarily compressing the insulation to a manageable.

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. For rolled insulation place it between roof rafters. You can use rigid foam panels or do as tom silva does with nearly all houses these days.

To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. 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 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. R value of 7 in 1 inch 97 closed cell foam.

Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Use closed cell foam it green for attic rafters. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. If your attic is going to be converted into livable space then you will need to insulate the roof rafters.

Then feed the rolled insulation under wires and pipe if either is present. Attach baffles to the bottom of the roof sheathing the plywood or solid wood strips onto which roofing material was installed. There are two basic ways to insulate a finished attic. How to install rafter insulation.

Use 3 8 inch heavy duty staples every six inches. Place the plastic sheeting on top of the rolled insulation. Hire a pro to install spray foam insulation. Attach the insulation to the rafter scab board by the paper flange so as not to compress the fiberglass.

In just a few minutes you ll have the information you need to make a smart purchasing decision for your home.