Tubelite Inc. Submittal Letter –

Should flashing be used under curtainwall?

Please complete all fields. Once submitted, you should receive a link to the submittal letter PDF to download.

  • MM slash DD slash YYYY
  • RE: Should flashing be used under curtain wall?

    To all concerned,

    Properly installed curtain wall does not require flashing underneath the frame. Curtain wall drains water from each lite at the horizontals and water stays out of the verticals. Because of this, very little water weeps out from the curtain wall directly onto the substrate beneath.

    Tubelite considers the use of flashing beneath our curtain wall products as unnecessary. All curtain wall systems are tested for air, water, structural, and thermal performance without sill flashing; and thus, it is not considered necessary to meet performance requirements. Flashing, when included, should be considered as part of the surrounding condition for aesthetics or function, and should be carefully detailed and integrated to the curtain wall system to prevent compromising the system’s performance.

    Best regards,

    Gerard Schoeb
    Structural and Application Engineering Supervisor
    (616) 808-2531 Direct /

    Disclaimer: The information contained in this document is intended only to address generic conditions or situations and does not apply to every installation or environment. Site-specific conditions may affect the content of this document and should be addressed on a case-by-case basis. If you have questions regarding a particular product use, application, or installation, please contact Tubelite for more specific information. Nothing in this document is intended or shall be construed as a waiver or modification of Tubelite’s Terms and Conditions of Sale or the terms of any Tubelite warranty.

Sample Submission Letter