4x8 Rigid Foam Insulation On Attic Rafters

This foam board insulation is available with straight or tongue and groove edges to help limit air movement.

4x8 rigid foam insulation on attic rafters.

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Click to add item r 6 expanded polystyrene foam board insulation 1 1 2 x 14 1 2 x 48 6 pk to the compare list compare click to add item r 6 expanded polystyrene foam board insulation 1 1 2 x 14 1 2 x 48 6 pk to the compare list. 0 56 in x 4 ft x 8 ft.

Attic hatch or door. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board. Vented roof foam board across rafters continued 4.

Foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products in a wide choice of sizes thicknesses and edges with a lifetime limited warranty for the life of the home or building. Kingspan insulation r 3 common. Also you d have to stack a lot of pieces of foam on top of each other or add other insulation on top in order to get any real insulating value which would make the waste of time add up significantly. A brief snippet of how and why i used rigid foam insulation for some areas of the tiny house.

Fasten foam insulation boards to the interior of the rafters using screws or nails with 1 inch minimum washers or caps. 2 snap a chalk line between the length measurements. It s worth changing tactics to insulate between the rafters and wall joists instead of the floor. The products are easy to handle score cut and install and no special tools are needed.

Read this in fhb years ago. Affix rigid foam insulation to the attic side of the hatch or door. I think you re wasting your time ripping every piece of foam to fit between rafters that are different distances apart.