Insulating Finished Attic Knee Walls
In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above.
Insulating finished attic knee walls. If only the living space will be insulated wrap the insulation around the room s walls and ceiling and then continue along the floor of the non living space. Unlike traditional walls with two finished sides. 1a attic access door. The sloped roof creates a small space that can hardly be use.
Blown insulation in the knee wall and top attics. Knee walls are half walls built into areas where a full sized wall will not fit such as finished attic crawlspaces. 2d extend insulation into joist space to reduce air flows. Although kneewalls can help turn attics into living space they often present insulation challenges most builders install fiberglass batts between the studs and some type of blown insulation between the floor joists.
We prefer cellulose but we use fiberglass sometimes too. Kneewalls short walls under sloped ceilings are common in story and a half homes and in bonus rooms above garages. Added bonus the floor of this knee wall leaked too so there is a line of foam just above the floor joist. How to insulate knee walls.