Subtopic 4.1005 Attic Floors

Consistent, thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space controls the heat flow

Consistent, thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space controls the heat flow

Insulation controls heat transfer through ceiling

Insulation controls heat transfer through ceiling

A consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between conditioned and unconditioned space controls the heat flow

Insulation reduces heat flow through floor and framing cavities inaccessible to other treatments

Consistent, thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between conditioned and unconditioned space controls the heat flow and air leakage

Insulation controls heat transfer through ceiling