TL-0030 — Shelf Life/Storage and Handling of GCP Applied Technologies Waterproofing and Air Barrier Products Technical Letter

The shelf life of GCP structural waterproofing and air barrier products (BITUTHENE®, PREPRUFE®, PROCOR® and PERM-A-BARRIER® brand products) is highly dependent on the conditions under which these products are stored. These products should be stored in their original, unopened packaging at ambient temperatures between 40°–90°F (5°–32°C). Liquid products should be protected from freezing. Specific product requirements are given below.

  • Membranes (including, but not limited to, PREPRUFE®, BITUTHENE® System 4000, BITUTHENE® 3000, and BITUTHENE® Low Temperature Membranes, PERM-A-BARRIER® Membranes and Flashings.

    GCP membranes are subject to a shelf life of one year from the date of manufacture from GCP.

  • Liquid Applied Membranes (including, but not limited to, PROCOR® 10, PROCOR® 20 and PROCOR® 75, PERM-A-BARRIER® Fluid Applied Membranes are subject to a shelf life of 9 months from the date of manufacture from GCP. Care should be taken to prevent the freezing of the water-based Perm-A-Barrier® VPL/VPL LT, PROCOR® Part B and PERM-A-BARRIER® Liquid Part B.

  • Primers and Conditioners (including, but not limited to, BITUTHENE® Primer WP-3000, BITUTHENE® Adhesive Primer B2 LVC, PROCOR® Concrete Sealer, BITUTHENE® System 4000 Surface Conditioner, PERM-A-BARRIER® WB Primer and PERM-A-BARRIER® Primer Plus)

    Freeze-thaw cycling should be avoided to prevent product instability and damage to the packaging caused by the expansion of the product during freezing. All GCP primers and conditioners are subject to a shelf life of one year from the date of manufacture from GCP.

  • Ancillary Products (including, but not limited to, BITUTHENE® Liquid Membrane, BITUTHENE® Deck Prep®, BITUTHENE® Mastic, PREPRUFE® Detail Tape, ADCOR® Hydrophyilic Waterstop and ADCOR® Adhesive). Ancillary products are subject to a shelf life of one year from the date of manufacture from GCP.

For further information, including the date of manufacture, contact your local GCP representative.