Knee Wall Insulation Foam Board
An example of insulating attic knee fetch here.
Knee wall insulation foam board. Energy saver considers knee wall insulation an energy efficient priority along with attic and foundation insulation. Rigid foam insulation is innovative eye pleasing and super effective. We prefer cellulose but we use fiberglass sometimes too. Insulating knee walls is a piece of the insulation process that can be overlooked and lead to unnecessary heat loss.
It easily expands with graphite infused right into the foam while we air seal the edges to provide the full maximum insulation. Installing a radiant barrier in the attic alternative method to insulate the attic duration. Our experienced professionals at devere insulation home performance will identify whether you have a knee wall and ensure it is thoroughly insulated to keep your home protected from the elements. In this video michael shows how to use spray foam fiberglass and foam board insulation to properly air seal and insulate a knee wall.
Watch as he shows step by step from measuring and cutting. Rigid foam insulation is the solution. An insulated kneewall is effectively an exterior wall so youll need a layer of rigid foam drywall osb or thermoply on the back side of the kneewall to prevent cold air from degrading the performance of the insulation. I approached this area with the same strategy as the rest of the bonus room covering the insulated wall with 1 inch foil backed foam insulation board.
We reduced the air leakage nearly 50 on this house in shaker heights without insulating the walls. This method of insulation wont work if the triangular attic includes ducts or plumbing pipes. Wondering how you can make your knee wall space insulated correctly. Added bonus the floor of this knee wall leaked too so there is a line of foam just above the floor joist.
The foam board provides a radiant barrier to reduce the transfer of radiant heat as well as air sealing because i took the time to apply great stuff spray foam to all cracks and seams. Blown insulation in the knee wall and top attics.