ENVELOPE PERFORMANCE VERIFICATION
Test. Build. Prove It.
Independent verification for renovation and addition projects.
Envelope Performance Verification is a simple third-party process that measures how well a home’s air barrier and insulation perform before and after renovation work. It helps protect contractors, guides construction decisions, and documents the final results.
Before Work • Before Drywall • After Completion
A SIMPLE THIRD-PARTY PROCESS
Three checkpoints. One clearer result.
Each visit answers a different question: what existed before the work, whether critical details are ready to cover, and how the completed home performs.
01 — Before Work Starts
Pre-Renovation Blower Door Test
- Document existing conditions
- Identify air-sealing opportunities
- Guide insulation and HVAC decisions
- Separate pre-existing issues from the renovation work
02 — Before Drywall
Insulation & Air-Barrier Consultation
- Confirm insulation coverage
- Verify air-barrier continuity
- Align existing construction with the new work
- Correct issues before finishes are installed
03 — After Completion
Post-Renovation Blower Door Test
- Confirm air-sealing improvements
- Document measurable performance
- Support code or program compliance when applicable
- Provide independent verification of quality
THE BOTTOM LINE
A little verification can prevent a costly callback.
If EPV prevents one comfort complaint, callback, or HVAC-sizing problem, it may have already paid for itself.
Typical complete package
$600–$750
Seasonal Discount
Qualifying projects may receive the complete package for under $500.
FOR CONTRACTORS AND HOMEOWNERS
Choose the next step.
Homeowners can begin with a short questionnaire. Contractors can schedule testing directly for an upcoming project.