Primer for use with the BITUTHENE® range of cold applied, self adhesive waterproof membranes

Product Description

BITUTHENE® Primer S2 is a rubber-based primer in solvent, specially formulated to provide good initial adhesion.

Product Advantages

  • All temperature application above -5°C
  • Green and damp concrete tolerant
  • Quick drying for fast membrane application
  • Rubberised formulation for high adhesion
  • Pink colour to ensure full coverage, aid identification and to avoid use of a non-recommended primer.
  • Compatible with BITUTHENE® 4000 and 8000 series


Used to prime “green” concrete or damp to touch substrates, as well as masonry or wood surfaces, on which BITUTHENE® 8000/8000S and 4000/4000S membranes will be applied. Primer S2 can be used on vertical and horizontal applications at -5°C or above.


BITUTHENE® Primer S2 may be applied by a roller or brush. Apply it to clean, dirt free, frost-free surfaces at a coverage rate of 9-11 m2 per litre. Allow the primer to dry 30 minutes or until tack-free. Dry time may be longer in cold temperatures. Deep puddles of primers should be avoided as this will lengthen drying time. Do not apply directly to BITUTHENE® membrane.

In general, priming should be limited to an area that can be covered with membrane within 24 hours. Areas that accumulate significant amounts of dust or dirt must be re-primed before membrane is applied.

Health and Safety

BITUTHENE® Primer S2 must be handled properly and stored in well ventilated place Read the product label and Safety Data Sheet (SDS) before use. Users must comply with all risk and safety phrases. SDS’s can be obtained from GCP Applied Technologies or from our web site at

Key Data

VOC ≤670 g/L
Curing at 20°C 30 minutes


BITUTHENE® Primer S2 5 & 25 litre can
Coverage 9-11 sq m per litre*
* Depending upon method of application, surface porosity and ambient temperature

All declared values shown in this data sheet are based on test results determined under laboratory conditions and with the product sample taken directly from stock in its original packing without any alteration or modification of its component parts. | United Kingdom customer service: +44 (0) 1480 478421

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 user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our 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 is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

This document is only current as of the last updated date stated below and is valid only for use in the United Kingdom. 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: 2022-11-24