Vented Attic Space With A Knee Wall
There are two basic ways to insulate a finished attic.
Vented attic space with a knee wall. If the room you re attempting to cool has an exterior wall that leads directly outdoors you can cut a hole in that wall just large enough to provide adequate venting for all the hot air you re sucking out of the interior space. Framing basics for attic knee walls along the sides of your loft or attic space. Disaster resistance roofs over unvented attics are less likely to be blown off in high winds because the wind cannot readily enter the attic. Support and follow me.
Efficient especially if ductwork is in the attic rudd 2005. The third point is the knee wall and crawlspace floor drywall. This includes built ins recessed lights vent fans duct work and electrical outlets. 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.
In this case the area behind the knee wall will be uncomfortably hot or cold. Bob you are correct i only install a fan if there is an opposing gable vent to pull intake air from. Vent through an exterior wall the first option is to vent the portable air conditioner through an exterior wall. Any penetration between the conditioned interior air and the knee wall space needs to be sealed tight.
Moisture resistance the attic will stay dry avoiding problems with mold and wood rot and thus can serve as living or storage space. The point is to provide air movement when soffit vents and venting the sloped section are not an option. Without a little help 2 gable vents on each side of a knee wall attic won t move much air. The air barrier used to isolate the living space from the attic is usually the taped drywall while the thermal barrier is the insulation placed on top of the drywall.