Adhesion Pull-Off Testing – ASTM D4541 for Air/Vapor Barriers
Atlantic Testing Services performs adhesion pull testing on air and vapor barrier (AVB) systems using the PosiTest® AT-M. This test is conducted in accordance with ASTM D4541, the standard method for measuring the tensile adhesion strength of coatings and membranes applied to a substrate.
Whether for quality assurance, warranty verification, or code compliance, adhesion testing provides objective, field-verifiable data on the performance of air barrier installations.
What Is Adhesion Pull Testing?
ASTM D4541 defines the procedure for measuring the pull strength of a membrane by bonding a test dolly to the AVB surface using a high-strength adhesive. Once cured, the dolly is pulled perpendicular to the surface using the PosiTest AT-M, a manual hydraulic adhesion tester that delivers highly accurate, repeatable results without the need for electricity or batteries.
The test continues until the dolly detaches or a specified pressure threshold is reached. The result is recorded in psi (pounds per square inch) and includes the failure mode:
- Adhesive failure (between layers or materials)
- Cohesive failure (within the membrane or substrate)
- Substrate failure (e.g., pull-out from CMU, Concrete, Gypson/Fiberglass Panels)
Why Adhesion Testing Matters
- Ensures membrane bonding strength meets manufacturer and project requirements
- Verifies installation quality before covering the AVB with insulation or cladding
- Supports warranty documentation for air barrier system manufacturers
- Complies with energy codes, ABAA requirements, and building commissioning protocols
- Detects weak bonds caused by improper substrate prep, moisture, or cold-weather application
Our Testing Process
- Site Evaluation – Confirm AVB is fully cured and accessible
- Dolly Preparation – Bond test dolly to AVB using appropriate adhesive
- Cure Time – Allow appropriate cure time (depending on product and conditions)
- Pull Test – Use the PosiTest AT-M to apply perpendicular force to the dolly
- Data Collection – Record peak pressure and document failure mode (adhesive, cohesive, substrate) Record dry membrane thickness using manual or digital gauge.
- Reporting – Provide a detailed report with results, photos, and field notes for each location.
Equipment & Standards
- PosiTest® AT-M – precision manual hydraulic adhesion tester
- ASTM D4541 – Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers
- Compatible with most AVB systems, including fluid-applied, sheet, and spray-applied membranes
- Optional elevated or cold-weather testing with jobsite-specific cure monitoring
Ideal Use Cases
- AVB system inspections for commercial buildings, schools, and high-performance enclosures
- Submittals for LEED, Passive House, or commissioning documentation
- Installation verification during and after AVB application
- Manufacturer-required adhesion testing for warranty approval
Nationwide Service. Fast Response. Certified Results.
Atlantic Testing Services brings certified adhesion testing to job sites across the U.S. Our team ensures you meet industry standards, installation specs, and energy code requirements—with documentation you can trust.