HVAC Foam Insulation


DAP Products Inc

Verify ID:


Expiration date:

May 25, 2022 - June 24, 2024

Verification Mark

Applicable To:


Marketing Claim Verified by UL Solutions

DAP HVAC foam reduces air leakage up to 99.9% while improving thermal efficiency up to 64%

Verification Method

Leak Test Method: - Sample size: Six duct assemblies each consisting of two 5 foot long sections of 6 inch diameter galvanized steel duct. Both ends of each assembly are capped. - Joints are secured with three equally spaced screws per International Mechanical Code paragraph 6.4.1 - The air supply is adjusted to provide a static pressure of 124.5 Pascals inside the duct assembly. - The flow rate through the airflow measurement device is recorded after stabilization. - The pipe sections are then be coated with foam sealant per manufacturer’s instructions. - The flow rate measurement is repeated for each duct assembly. - The percent reduction in airflow is calculated as follows: (initial – final) / initial x 100%. - The average of the 6 assemblies is reported in the claim language. Efficiency Test Method - Sample size: Three galvanized steel duct assemblies each consisting of ten pieces of 6” diameter by 5 feet long duct and six 90° elbows. - A cold air supply is used to push cold air through the ductwork at approximately 80 CFM. - The chamber is set for 100 °F and 45% relative humidity. - After temperature readings stabilize, the following measurements are taken: Air flow rate, air temperature and humidity. - The duct assembly is then coated with the foam sealant. - The temperature, humidity and flow rate readings are repeated. - The thermal efficiency improvement will be calculated as follows: (heat loss without foam – heat loss with foam) / heat loss without foam x 100% - The average of the 3 assemblies is reported in the claim language.

What is UL Verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.