TL-0031 — Compatibility of Other Primers and Surface Treatments with BITUTHENE® Membranes Technical Letter (US Version)

BITUTHENE® waterproofing membranes are specifically formulated to perform as a system with BITUTHENE® accessory products, for example the BITUTHENE® System 4000 Surface Conditioner and the BITUTHENE® family of primers. Extensive research and development efforts have been undertaken to assure that all components of the BITUTHENE® waterproofing systems are chemically compatible when used according to GCP printed instructions and recommendations.

Use of non GCP primers and surface treatments along with BITUTHENE® membranes is not recommended by GCP.

Use of these may result in field compatibility problems during and after the BITUTHENE® membrane installation, to include but not limited to:

  • Use of competitive primers with BITUTHENE® Membranes have been observed to cause the membrane to gradually peel off a vertical wall, even though the initial adhesion of the membrane to the primed wall appeared to be excellent.
  • Long term compatibility problems may occur.
  • Chemicals within other primers and surface treatments may attack the rubberized asphalt adhesive of the BITUTHENE® Membrane and lower the adhesion of the membrane to the structure, jeopardizing the performance of the waterproofing system.

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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 www.gcpat.com. 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: 2019-03-11

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