Strong Sleeve for soil gas collector matting in 8″.  Strong sleeves go in form during load-bearing footer pours.  Once the concrete is hardened, the foam knockouts are removed and you have a void space to put gas matting through.  Strong sleeves allow for pressure field extension across footers.

Strong Sleeve Pressure Field Evaluation 2025  <— Industry first study on airflow

Benefits:

• Higher PFE
• Less roof penetrations
• Lower ongoing maintenance costs
• Safer construction site

Applications:

• Slabs with load bearing footers
• Floors with hydronic heating
• Crawlspaces with concrete grade beams or pony wall supporsts

Code checklist

• ANSI AARST RRNC 2.0
• ANSI AARST CC-1000
• ASTM 1465-06
• IRC APPENDIX F
• LEED BD+C

Is is recommended, especially during cold weather months, that 2″ is removed from grade to allow for soil gas collector in soil with 1″ foam above.  See drawings below.

Strong Sleeve Product Detail SSK08

Soil Gas Mat subslab preparation detail for FOAM

Strong Sleeve in Form CAD

Installation Video Click HERE