4.1004.3 Strapping for Existing Insulation

Topic: 
Attics
Subtopic: 
Knee Walls
Desired Outcome: 
Consistent, uniform thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between the conditioned space and unconditioned space to prescribed R-value
TitleSpecification(s)Objective(s)
4.1004.3a
Sealing

Holes and penetrations will be sealed

Bypasses will be blocked and sealed

Prevent air leakage
4.1004.3b
Installation

Insulation will be installed in full contact with all sides of existing cavity without gaps, voids, compressions, misalignments, or wind intrusions

Insulate to prescribed R-value
4.1004.3c
Attachment

Strapping material will have a minimum expected service life of 20 years

Maintain alignment
4.1004.3d
Occupant education

Documentation of material and R-value will be provided to occupant

Provide occupant with documentation of installation