April 17, 2024

Pecora Sealant Cure Times and Pressurized and Hose Stream Leakage Testing

Pressurized and hose stream leakage testing is a valuable tool for verifying the quality and effectiveness of sealant applications, helping to ensure the durability and performance of buildings and structures. For this week’s blog post, we take a look at Pecora sealant cure times and pressurized and hose stream leakage testing.

When applying joint sealants on projects requiring field air/water leakage testing the guidelines published here should be followed to ensure the sealants are fully cured prior to testing. Uncured or partially cured sealants may result in a compromised seal and subsequently a test failure. In order to avoid testing failures and potential project delays, Pecora has determined the minimum sealant cure times for both single component and multicomponent type joint sealants.

Pressurized air/water leakage chamber tests include, but not limited to, the following ASTM procedures:

  • ASTM E779 Standard Test Method for Determining Air Leakage Rate by Fan Pressurization
  • ASTM E1827 Standard Test Methods for Determining Airtightness of Buildings Using an Orifice Blower Door
  • ASTM E1105 Standard Test Method for Field Determination of Water Penetration of Installed Exterior Windows, Skylights, Doors, and Curtain Walls, by Uniform or Cyclic Static Air Pressure Difference
  • ASTM E331 Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

Also performed are hose stream tests where the sealants are subjected to a water spray only. These tests are less rigorous and will require a reduced cure time due to the lack of exposure to static pressures and additional stresses placed on the sealant bond.

The following sealant cure times are required when air/water leakage field tests are to be conducted on projects involving Pecora’s joint sealants:

Pecora Corporation joint sealants and waterproofing products shall be installed in accordance with published specification data with regards to appropriate surface preparation, movement capabilities, and proper joint design.

To learn more about our sealant products, please visit our website at


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