Adding Foam Board To Inside Of Truss Attic Space

Senior engineer manager at icynene john broniek makes the case for the unvented attic assembly and why insulating the underside of the roof makes sense.

Adding foam board to inside of truss attic space.

Rafters are large internal beams that create a triangular structure with the floor at the bottom and the roof peak at the top. Use a chalk line to draw a line along the floor parallel to the lower edge of the roof from one end of the attic to the other on both sides. If you decided to use a rigid foam board to help insulate your cathedral ceiling you would install the board on top of the roof sheathing and underneath the plywood at the top of the roof. Foam insulation boards are the best material with which to work when undertaking a do it yourself project because foam.

If you re using the attic for living space then you need to insulate the rafters. With spray foam unlike with loose fill or batts you must cover the soffit vents they aren t needed to keep the roof cool. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof. This type of ceiling is insulated in the same manner that you would insulate a standard attic space.

The superattic system from dr. If you re not do the attic floor. That s how you can save up to 40 on your energy bills. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.

Grab a flashlight and take a quick peek inside your attic and you ll know. Measure in from the lower edge of the roof to a point 1 4 the width of the truss on either side of the attic. Energy saver eliminates the need to remove attic flooring and lose valuable attic storage space in order to make major energy saving upgrades in the attic. Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation.

Foam blocks airflow needs no vapor barrier and has a higher r value per inch than loose fill or batts so you ll get more protection with less depth. Then cover the foam with drywall as required for fire safety. Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living. Nothing unusual about that.

It s important you spray foam attic rafters only if you need to. Measure the width of your roof trusses from inside to inside. You re sealing outside air out and keeping air you already heated or cooled inside. Trusses are a network of w shaped boards that support the roof.