Insulating An Attic With Rafter Panels

Apply two inches of rigid foam insulation board to the top of the roof sheathing.

Insulating an attic with rafter panels.

An unvented attic differs from a conventional vented attic in that there is no direct venting of the attic space which is generally considered to be between the roof rafters framing and the top story ceiling framing members attic floor. Square footage of your attic. Contractor or insulation installer s fee. Remove any existing pieces of insulation that might have been covering the attic walls until now.

To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends. Roofing membrane or 30 lb. Felt for air barrier and water shedding plane then goes on top of this exterior insulation before installing roofing materials such as shingles or standing seam metal.

This roof type will require a breathable membrane like kingspan nilvent to be. Remove the old insulation boards carefully without causing any damage to the walls. Measure cut and insert additional strips of rigid foam board until the insulation fills all the rafter spaces. Type and material of your insulation.

Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow. I added insulation to my attic rafters and plugged the space between the outdoors and my attic with insulation. According to home advisor insulating your attic can cost between 1700 to 2100. The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy performance.

This insulating method is only acceptable when the attic will not be finished. Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement. Step 2 install insulation boards. Insulating your roof and attic space will help retain energy in your home often leading to cost savings and comfort improvement.

The main factors that impact the cost are. If you want to insulate the rafter bays rather than the attic floor in order to make the attic a heated space baffles are even more important for proper air circulation.