Knee partitions will not be present in all attics, and they aren’t completely needed. However they’re awfully good to have. In case your attic house is framed with rafters and is unfinished, it has a triangular form. On the backside factors of the triangles, the rafters meet the highest plates of the outside partitions. The precise peak of the knee wall is your selection.
What Is a Knee Wall?
A knee wall is a brief vertical wall, roughly two or three toes excessive, thats used to help rafters within the roof. It additionally blocks off the house that is too small (as a result of sloping roof) to make use of for something in an attic.
Vitality-Saving Measure
The knee wall, by itself, can present some extent of insulation in opposition to air infiltration from the skin. Nevertheless, the knee wall is normally not sufficient to supply all of the insulation you want.
To scale back air infiltration, the U.S. Division of Vitality recommends that you just full a number of steps:
- Insulate the rafters.
- Cowl rafters with an air barrier.
- Caulk that barrier.
- Caulk all different holes or cracks or stuff with fiberglass batt insulation or spray foam.
The vitality saving measures listed above are solely needed if the house is to be occupied in some kind. If not, including extra ceiling insulation can be the popular technique. When insulating between rafters, an area for airflow is required to assist preserve insulation dry from condensation.