TL-0004 — Chemical Resistance Technical Letter

Several series of tests have been conducted to define the chemical resistance of PREPRUFE® and BITUTHENE® waterproofing membranes. Both PREPRUFE® and BITUTHENE® membranes are highly resistant to normal ground water conditions which range from alkaline to acidic. In addition, PREPRUFE® and BITUTHENE® waterproofing membranes are unaffected by exposure to salt water.

Occasionally PREPRUFE® and BITUTHENE® membranes may be used in applications which will be subjected to intermittent or even continuous exposure to chemicals. The following guidelines can be used to evaluate the applicability of the PREPRUFE® and BITUTHENE® membrane system.

NOTE: Most solvents and fuels will not significantly a?ect polyethylene film but may soften or dissolve the adhesive compounds exposed at the edge laps of BITUTHENE® membranes. Detailed information on the type of exposure is necessary to make recommendations.

For below slab and blind side applications, a concrete mud-slab or continuous soil retention system will reduce the exposure of the PREPRUFE® membrane laps. For BITUTHENE® membrane wall
applications, the use of a solvent resistant tape, should be used over the membrane edges to protect the rubberized asphalt from prolonged exposure.

Exposure Conditions PREPRUFE® and BITUTHENE® Membrane Resistance Rating
Sea water, de-icing salt Excellent
Acids in solution
e.g. sulfuric, acetic, hydrochloric and nitric acid
e.g. Sodium hydroxide, ammonium hydroxide
Alcohols Very Good
Organic or fuel oils, solvents Variable (See note.) | North America Customer Service: +1 (877) 423 6491

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the end user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with out conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

BITUTHENE and PREPRUFE are trademarks, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been complied using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2019 GCP Applied Technologies Inc. All rights reserved. 


GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 400, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6
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: 2023-06-28