1.5mm thick, self-adhesive membrane

Product Description

BITUTHENE® CP is a 1.5mm thick flexible, preformed waterproof membrane comprising a HDPE polyethylene film and a thick self-adhesive rubber/bitumen compound. The membrane has been designed and specially formulated to withstand high ambient temperatures.

Continuity is achieved by overlapping adjacent rolls by 50mm and firmly rolling. Being factory made, the thickness of the membrane is constant throughout and is not subjected to variation by site labour as occurs with brush applied membranes.


Product Advantages

  • Chemically-resistant — provides effective external protection against aggressive soils.

  • Single layer — simple, reliable, low labour cost.

  • Cold-applied — self-adhesive overlaps ensure continuity.

  • Flexible — accommodates minor settlement and shrinkage movement.


Measures should be taken to ensure that all surfaces are free from ice, frost or condensation. Installation is recommended between +10°C and +40°C.

Concrete blinding under base slab should be surface dry, free from standing water, and laid to a regular surface free from sharp protrusions and hollows.

Horizontal surfaces under base slabs do not usually require priming before applying the membrane.

Vertical surfaces shall be smooth, regular, dry and free from nails and primed with one coat of Bituthene Primer N applied by brush or roller at a rate of 5 to 8 sq m / L depending on the porosity of the surface, and allowed to dry completely before the application of the Bituthene CP. Brickwork shall be flush pointed or rendered to provide a smooth surface before priming.

Bituthene CP shall be laid by peeling back the protective release paper and applying the adhesive face onto the prepared surface. The material should be brushed on to the surface to ensure good initial bond. Adjacent rolls are aligned and overlapped 50mm minimum at side and ends and well rolled with a firm pressure using a Lap Roller to ensure complete adhesion and continuity between the layers.

Any punctures or damaged areas should be cleaned and patched using Bituthene CP with 50mm laps all round.

Pipe entries may be sealed prior to the application of Bituthene CP with Liquid Membrane extended over the adjacent flat slab area to give a minimum 50mm lap under the Bituthene CP. Liquid Membrane is a two component compound for waterproofing irregular profiles in conjunction with Bituthene systems.

Where Bituthene is to be left temporarily exposed on vertical surfaces, batten fixing may be necessary to prevent slippage. Prior to backfilling remove battening and cover fully with a subsequent layer of Bituthene.

Following application care should be taken to prevent damage by following trades by using a 25mm screed as Bituthene protection boards spot bonded with Pak Adhesive. Vertical faces to be protected if required against damage from backfilling and fixing of reinforcement by using Bituthene protection boards recommended by spot bonded with Pak Adhesive.

Health and Safety

Refer to relevant Material Safety Data Sheets.

Quality Assurance

GCP Applied Technologies is certified to ISO 9001 by TUV SUD PSB Pte Ltd.

Typical Performance Properties

Tensile Strength (Film) 19,700kN / m2 ASTM D882
Tensile Strength (Composite) M.D: 1.3N / mm
C.D: 1.1N / mm2
Elongation (Composite) ≥ 300% ASTM D412
Puncture Resistance 9kg ASTM E154
Adhesion to Self 1,100N / m GCP Test
Method B77
Pliability Pass GCP Test Method


Bituthene CP preformed, self-adhesive membrane shall be laid on to smooth concrete substrates and on to vertical surfaces primed with Bituthene Primer N applying the preformed membrane sticky side downwards, to give well rolled 50mm overlaps, and shall be laid strictly in accordance with the manufacturer’s instructions.


Bituthene CP 1m x 20m roll Average net weight 38Kg
Palletisation Storage Up to 25 rolls per pallet Store upright in dry conditions below 35oC
Nominal Thickness 1.5mm
Bituthene CP 1m x 16m roll Average net weight 38Kg
Palletisation Storage Up to 25 rolls per pallet Store upright in dry conditions below 35oC
Nominal Thickness 2mm
Bituthene CP 1m x 12m roll Average net weight 38Kg
Palletisation Storage Up to 25 rolls per pallet Store upright in dry conditions below 35oC
Nominal Thickness 2.5mm

Ancillary Products

See separate data sheets

Bituthene Primer N 20L / pail
Coverage 5 to 8 sq metre / L depending on method of application, surface texture, porosity and ambient temperature
Bituthene Liquid Membrane 5.7L
Bituthene Mastic 4.5L / pail
Lap Roller Unit

Complementary Materials

See separate data sheets

Equipment by Others

Soft brush, Stanley knife, brush or roller for priming. Stiff broom and airline for cleaning surface. | Thailand customer service: 66 2 030 9700

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 2017 GCP Applied Technologies, Inc. All rights reserved.

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA
GCP Applied Technologies Holdings (Thailand) Limited., 848 Moo 2, Bangpoo Industrial Estate (North), Phraksa Mai, Muang Samutprakarn, Samutprakarn 10280, Thailand
This document is only current as of the last updated date stated below and is valid only for use in Thailand. 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: 2023-07-07