Self-adhesive rubber bitumen/HDPE waterproof membrane for low risk applications
BITUTHENE® GP is a combination of a high density polyethylene film and a self-adhesive rubber/bitumen compound. It is supplied in rolls 1 mm thick overall, 1 m wide and 25 m long (25 m2).
The product is for low-risk applications only and is capable of resisting a hydrostatic head up to 1m. All concrete and masonry surfaces to which the membrane is to be applied must have a smooth finish. Surfaces should be clean, dry free of voids and any sharp protrusions. Masonry surfaces must be rendered to provide an even flush surface, if not rendered then all brick or blockwork must be flush pointed. For higher risk applications, we would recommend the use of BITUTHENE® 4000, BITUTHENE® 8000 or PREPRUFE® 800PA.
Minimum ambient application temperature +5°C. Ensure that all surfaces are clean, dry and free from ice/frost. Surfaces should be smooth, free from voids and protrusions, and any imperfections should be made good using BETEC® NSM mortar.
All surfaces except those below ground bearing slabs should be primed with one coat of Primer B1 applied by brush or roller. BITUTHENE® GP shall be laid by peeling back the protective release paper and applying the adhesive face onto the prepared surface.
BITUTHENE® LM to be applied at necessary internal and external corners, penetrations etc. prior to applying the overall membrane.
BITUTHENE® GP should be brushed onto the surface to ensure good initial bond and exclude air. Adjacent rolls are overlapped 50 mm 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.
On high walls it may be necessary to batten fix the membrane to prevent slippage.
For application over damp and green concrete, we would recommend to use BITUTHENE® 4000 or BITUTHENE® 8000 system using damp/green concrete tolerant primer.
Repairs, Protection & Drainage
Damaged areas to be repaired with an oversize patch applied to a clean dry surface extending 100 mm beyond damage and firmly rolled. Protect BITUTHENE® membranes immediately after application to avoid damage from other trades, construction materials or backfill, using only Protection 03 boards. If the area around the substructure can be drained to a low level outlet then GCP recommends the HYDRODUCT® range of drainage membranes.
- Waterproof - capable of resisting a hydrostatic head when fully supported (up to 1 metre of water)
- Cold applied - safe, no flame, no heating, no torch-on equipment, self-adhesive overlap ensure continuity
- Flexible - accommodates minor settlement and shrinkage movement
- Reduces installation risk - no risk of:
- Over heating - that damages the membrane and affects performance
- Under heating – poor membrane adhesion and lap sealing affects water tightness
- Rubber/bitumen - flexibility and resistance to most dilute acids and alkalis
- Lighter roll - for ease of application
- Longer roll - for less storage
Health and Safety
There is no legal requirement for a Safety Data Sheet for BITUTHENE® GP, Protection 03 board, HYDRODUCT® or waterstops. For Primer B1, BITUTHENE® LM and Pak Adhesive™ read the product carton 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 gcpat.com.
|BITUTHENE® GP||1 m x 25 m roll (25 sq m)
Weight 30 kg
|Storage||Store upright in dry conditions below +30°C|
|Primer B1||5 & 25 litre drums|
|Coverage||7-10 sq m per litre application, (depending on surface porosity and ambient temperature)|
|BITUTHENE® LM||5.7 litre packs|
|Protection 03 board||3 mm x 0.9 m x 2.03 m (± 6%)|
Equipment by Others: Soft brush, stanley knife; brush or roller for priming. Stiff broom and airline for cleaning surface.
|Property||Typical Value||Test Method|
|Tear Resistance||Long 91.6 N
Trans 89.6 N
|Peel Strength||105.4 N||MOAT 27:5.1.3|
|130.6 N||MOAT 27:5.2.2|
|Moisture Vapour Permeability||0.39 g/m2/24 hours||BS 3177: 1959 (75% RH/25°C)|
|Resistance to hydrostatic head||< 1m of water||ASTM D5385|
Declared values according to EN 13967
|Property||Declared Value||Test Method||Property||Declared Value||Test Method|
|Visible defects - MDV||None||EN 1850-2||Straightness - MDV||Pass||EN 1848-2|
|Length (m) - MDV||25.15 ± 0.15||EN 1848-2||Thickness (mm) - MDV||1.12 ± 0.08||EN 1849-2|
|Width Carrier Sheet (m) - MDV||0.987 ±0.007||EN 1848-2||Mass per unit area (g/m²) - MDV||1050 ± 90||EN 1849-2|
|Width Overall (roll) (m) - MDV||1.000 ± 0.010||EN 1848-2||Durability of water tightness against ageing/degradation (at 60 kPa)||Pass||EN 1296
EN 1928 Method B
|Water tightness to liquid water (at 60 kPa)||Pass||EN 1928||Durability of water tightness against chemicals (at 60 kPa)||Pass||EN 1847
EN 1928 Method B
|Resistance to impact (Al-board (mm) - MLV)||≥100||EN 12691||Compatibility with bitumen||Pass||EN 1548
|Resistance to static loading||≥ 10 - Pass||EN 12730|
|Resistance to tearing (Nail Shank)- (N) - MLV||Long¹ ≥100
|EN 12310-1||Tensile properties - unreinforced sheets (N/50mm) - MLV||Long¹ ≥ 200
Trans² ≥ 250
|EN 12311-2 Method A|
|Joint strength (N/50mm) - MLV||≥ 130||EN 12317-2||Tensile properties - unreinforced sheets (Elongation %) - MLV||Long¹ ≥ 270
Trans² ≥ 220
|EN 12311-2 Method A|
|Water vapour transmission (μ= sD/d) - MDV||120,000 ± 30%||EN 1931 Method B||Reaction to fire (Class; test conditions)||E||EN 13501-1|
|Resistance to deformation under load||NPD5||As relevant||Dangerous Substances||NPD5||As relevant|
1. Longitudinal - related to the roll direction
2. Transversal - related to the roll direction
3. MDV: Manufacturer Declared Value
4. MLV: Manufactured Limiting Value
5. NPD: No performance determined
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.
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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, BETEC, PREPRUFE, and HYDRODUCT are trademarks, 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.
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GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA
GCP Applied Technologies (UK) Ltd, 487-488 Ipswich Road, Slough, SL1 4EP
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 www.gcpat.uk. 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: 2022-04-29