BE8: Unconditioned attics

• Insulation baffles at all soffit vents, trays and attic access 
• Loose-fill insulation R-value certificate, and depth rulers installed 1 per 300 ft² 
• Platforms allow for full-depth insulation below 
• Attic access within conditioned space ≥R-5 
• Knee walls ≥1ft tall insulated to R-18 with sealed attic side air barrier 
• Knee walls <1ft tall fully covered to achieve same R-value as surrounding attic

Purpose

It is important to Insulate unconditioned attic spaces correctly because they are a potential source of significant heat loss and gain. This item focuses on installing attic insulation to the correct depth (R-value) at differing attic locations and ensuring the insulation is not susceptible to wind-washing or convective losses. 

Criteria

See above requirements for reference.

Confirmation

The Technical Advisor will visually verify compliance during the mid-construction and final inspections.