ASTM E576 Frost/Dew Point Testing for Insulating Glass Units
ASTM E576-14 – Standard Test Method for Frost/Dew Point of Sealed Insulating Glass Units in the Vertical Position
ASTM International E576-14 is a field or laboratory test method used to determine the frost or dew point within the air space of sealed insulating glass units (IGUs).
At Sovell Investigative Testing and Consulting (SITC), we use ASTM E576 to evaluate the performance of IGUs and identify potential failures before they impact building occupants or property value.
What ASTM E576 Testing Evaluates
ASTM E576 determines whether the frost/dew point within an IGU is below or above a specified temperature, indicating whether the sealed unit is functioning properly.
Test Procedure Overview
- Glass Thickness Measurement – Determines test duration, as thicker glass requires longer stabilization.
- Surface Preparation – The IGU surface is prepared following ASTM E576 procedures.
- Temperature Application – Specialized calibrated equipment lowers and maintains the temperature (as low as −109°F) for testing.
- Observation for Frost Formation – SITC personnel monitor the glass surface for frost deposits.
If no frost is observed, the IGU’s frost/dew point is below the stabilized temperature, indicating the unit is performing correctly.
Applications of ASTM E576 Testing
Existing Building Assessment
- Determine if existing insulated glass units require replacement
- Identify IGU failures that could affect energy efficiency, comfort, or durability
Pre-Purchase Property Evaluation
- Assess IGU performance prior to acquisition
- Provides buyers with:
- Peace of mind that the windows are in good condition
- Or a clear understanding of replacement needs, which may impact purchase price or decision
SITC Expertise in Frost/Dew Point Testing
With extensive experience in both field and laboratory testing, SITC ensures accurate ASTM E576 evaluations. Our personnel are trained to handle sensitive equipment, follow standardized procedures, and provide clear, actionable results to clients.
By combining technical expertise and careful observation, SITC delivers reliable data that helps clients make informed decisions regarding IGU performance and building envelope integrity.
ASTM E576 Frost/Dew Point Testing for Insulating Glass Units
ASTM E576-14 – Standard Test Method for Frost/Dew Point of Sealed Insulating Glass Units in the Vertical Position
ASTM International E576-14 is a field or laboratory test method used to determine the frost or dew point within the air space of sealed insulating glass units (IGUs).
At Sovell Investigative Testing and Consulting (SITC), we use ASTM E576 to evaluate the performance of IGUs and identify potential failures before they impact building occupants or property value.
What ASTM E576 Testing Evaluates
ASTM E576 determines whether the frost/dew point within an IGU is below or above a specified temperature, indicating whether the sealed unit is functioning properly.
Test Procedure Overview
- Glass Thickness Measurement – Determines test duration, as thicker glass requires longer stabilization.
- Surface Preparation – The IGU surface is prepared following ASTM E576 procedures.
- Temperature Application – Specialized calibrated equipment lowers and maintains the temperature (as low as −109°F) for testing.
- Observation for Frost Formation – SITC personnel monitor the glass surface for frost deposits.
If no frost is observed, the IGU’s frost/dew point is below the stabilized temperature, indicating the unit is performing correctly.
Applications of ASTM E576 Testing
Existing Building Assessment
- Determine if existing insulated glass units require replacement
- Identify IGU failures that could affect energy efficiency, comfort, or durability
Pre-Purchase Property Evaluation
- Assess IGU performance prior to acquisition
- Provides buyers with:
- Peace of mind that the windows are in good condition
- Or a clear understanding of replacement needs, which may impact purchase price or decision
SITC Expertise in Frost/Dew Point Testing
With extensive experience in both field and laboratory testing, SITC ensures accurate ASTM E576 evaluations. Our personnel are trained to handle sensitive equipment, follow standardized procedures, and provide clear, actionable results to clients.
By combining technical expertise and careful observation, SITC delivers reliable data that helps clients make informed decisions regarding IGU performance and building envelope integrity.

