Subtopic 4.1003 Attic Ceilings

Reduce the rate of heat transfer through cathedral or vaulted ceiling Vaulted ceiling A condition where a non-horizontal ceiling has a different slope than the roof

Insulation reduces heat transfer through ceiling and closed attic sections as well as framing cavities inaccessible to other treatments

Insulation reduces heat flow through unvented roof

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

Reduced heat transfer and air leakage through roof and closed attic sections as well as framing cavities inaccessible to other treatments

Reduced heat transfer and air leakage through roof and closed attic sections as well as framing cavities inaccessible to other treatments

Meet building code requirements for fire protection of spray polyurethane foam

Consistent, uniform 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 the conditioned space and unconditioned space

Consistent, uniform 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 the conditioned space and unconditioned space

Consistent, uniform 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 the conditioned space and unconditioned space

Consistent, uniform 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 the conditioned space and unconditioned space

Proper preparation and installation of spray polyurethane foam ( SPF SPF Spray polyurethane foam ) to create continuous air and thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow

Reduced heat transfer and air leakage through roof and closed attic sections, as well as framing cavities inaccessible to other treatments

Insulation reduces heat flow through unvented roof