Adding Foam Board Between Trusses In Attic Space

If you re not do the attic floor.

Adding foam board between trusses in attic space.

Cut foam boards to fit snugly between the trusses. My attic is framed with rafters and a ridge board not with roof trusses. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. The reason trusses shouldn t hold the weight of flooring or heavy boxes is because they are typically made from relatively small boards 2x4 s in some cases and the bottom board is already carrying a significant roof load because of the design of the angled elements.

Seal these carefully to make the barrier continuous. Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120. Parts of my attic are floored. Encapsulating the rafter or top truss chord roof framing members with spray foam will improve the energy efficiency of the attic space.

Caulk all edges gaps and joints. This is because the effects of thermal bridging are limited which also results in the elimination of melt lines on the roof surface in cold climates. That s because it s easier for the contractor to spray than clean up existing insulation deal with any can lights or venting etc. Obstructions such as electrical wires will require cuts in the barrier.

Batts between rafters in would require adding ventilation between the insulation roof deck. Foam board insulation is easy to cut with a circular saw with a masonry blade or scored with a utility knife and snapped like you would drywall. To attach the insulation you can use screws with large washers a special adhesive made for adhering foam board insulation or for smaller pieces you can seal them in with caulk or spray foam. Consumers are often told by spray foam contractors to do the rafters.

If you re going to cut n cobble get some 2 thick goods and glue in a 2x2 foam tight to the roof deck rafter as spacer rails for the vent cavity then cut the center goods at least an inch narrower than the cavity and foam it in with frothpak or other 2 part foam kit. I would like to use some of my attic space for storage. Affix rigid foam insulation to the attic side of the hatch or door. Pull down stair or ladder.

Remove existing insulation from the area you are working on and set it to one side. Attics are a top pick when homeowners decide to gain some extra storage or add a guest room but not all attic flooring structures are up to the task of supporting the weight of a new living space. Attic hatch or door.