TL-0011 — Shelf Life of Roofing Underlayments Technical Letter

The shelf life of GCP underlayments (GRACE ICE & WATER SHIELD®, GRACE ICE & WATER SHIELD® HT, GRACE ULTRA™, GRACE SELECT™, Roof Detail Membrane™, GCP granular underlayment , TRI-FLEX® and TRI-FLEX® 15) is highly dependent on storage conditions. In general, these products should be stored in their original, unopened packaging at ambient temperatures between 40–90°F (5–32°C) under dry conditions. GCP self-adhered underlayments have optimum initial adhesion to the roof deck if used within one year from the date of manufacture. | North America Customer Service: 1 877-4AD-MIX1 (1 877-423-6491)

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This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2022-08-02