4.1402.2 Basement Wall Insulation—No Groundwater Leakage

Topic: 
Basements and Crawl Spaces
Subtopic: 
Basements and Crawl Space Walls
Desired Outcome: 
Basement insulation improves thermal performance and ensures sufficient drying potential
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.
TitleSpecification(s)Objective(s)
4.1402.2a
R-value

Regional IECC IECC International Energy Conservation Code will be followed for required R-values

Improve thermal performance of the basement and living space
4.1402.2b
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

A continuous 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 will be installed on the warm side of the insulation

Prevent condensation on the basement wall
4.1402.2c
Vapor permeability


When absorbent insulation materials are installed, assembly will remain vapor semi-impermeable to the interior in all climate zones except Zone 7 

Provide drying potential to the basement
TitleSpecification(s)Objective(s)
4.1402.2a
R-value

Regional IECC IECC International Energy Conservation Code will be followed for required R-values

Improve thermal performance of the basement and living space
4.1402.2b
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

A continuous 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 will be installed on the warm side of the insulation

Prevent condensation on the basement wall
4.1402.2c
Vapor permeability


When absorbent insulation materials are installed, assembly will remain vapor semi-impermeable to the interior in all climate zones except Zone 7 

Provide drying potential to the basement