BE4: Insulated corners at all exterior locations

Purpose

Insulated corners reduce thermal bridging by allowing more space for insulation.

Criteria

Insulate the intersecting corner of two exterior walls to ≥R-6. EarthCraft will accept two-stud ("California corner") and two-stud corners with an offset stud to meet the intent of this criteria.

Clarifications 

• Load-bearing corners in multi-story buildings or where porches/porch roofs are designed may request a waiver for this requirement 
• The corner must be fully insulated to achieve the intent of this criteria; therefore, corners with more than three studs are not permitted.

Confirmation

The EarthCraft Technical Advisor will visually confirm compliance of criteria at mid-construction inspection.