SystemVision Air Tightness Study

Air sealing sheathing and bottom plates with caulk.

While new SystemVision standards were rolling out last year, Advanced Energy was hard at work sorting through data and surveying builders in the SystemVision Program to answer the question:

What architectural features and building practices lead to tighter SystemVision homes? 

After interviewing builders, studying floor plans, and running countless statistical models on close to 1,000 homes, we found practices that statistically lead to tighter homes:

Simple homes with fewer stories, windows and corners.

  1. Fewer can lights.
  2. Air sealing with caulk rather than foam.
  3. Sealing the double top plates together.
  4. Sealing the exterior sheathing to the bottom plate.
  5. Sealing the top plate to drywall after the ceiling drywall is hung.

If you are struggling with the new air tightness standard, then these six tips may be a good starting point.  The Air Sealing Checklist featured on the SystemVision Tools website offers practical guidance and images for how to achieve better air sealing

If you are already meeting air tightness targets on a consistent basis, keep up the great work and don’t change what you are doing.

Category: Contractor Corner   


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