Cold Spray Applied Structural Waterproofing Membrane

Product Description 

INTEGRITANK® is a high performance, structural waterproofing membrane for the protection of steel and concrete structures based on GCP’s (previously Stirling Lloyd) unique ESSELAC® advanced resin technology and extensive experience in the development of coatings for specialist waterproofing. It cures rapidly to provide a tough, flexible seamless membrane, available in both spray and hand grades.


INTEGRITANK® is designed to retain, exclude or protect structures from water, oils, fuels and many aggressive chemicals.

INTEGRITANK® Spray Grade is suitable for larger areas and can achieve outputs of 2,000m2 per day dependent on site conditions.

INTEGRITANK® Hand Grade is ideal for application in small areas or where restricted access prevents spray application.

Typical applications include:

  • Tunnels
  • Balconies
  • Podium Decks
  • Basement tanking
  • Roofs - including Green and Bio-Diverse roofs
  • Concrete, masonry, asphalt or steel substrates requiring a chemical and/or abrasion resistant coating
  • Storage tanks and silos.
  • Secondary containment - bund lining or earthen containment bunds (using a fabric carrier for the coating)
  • Silage units
  • Canals and culverts
  • Sewage and sludge tanks
  • Low-level radiation tanking and roofing applications.


  • A range of approvals including British Board of Agrément (BBA) (UK), British Nuclear Fuels (UK) and CEMETE (France)
  • Approved by British Board of Agrément for new and existing zero pitched roofs. See Agrément Certificate 03/4060 (2nd Issue)
  • Unaffected by high humidity 
  • Rapid cure even at low temperatures 
  • Able to carry load or traffic after one hour
  • Resistant to ballast and backfill materials
  • Long and effective life
  • Resistant to chloride ions
  • Excellent chemical, abrasion and impact resistance
  • Excellent UV and weather resistance
  • Crack bridging capability
  • High bond strength to substrate
  • Excellent intercoat adhesion
  • No critical overcoating time on any coat
  • Can be applied to verticals and overhead
  • On site Quality Assurance programme
  • Applied only by authorised and trained contractors

Technical Data

INTEGRITANK® is CE Marked under EN1504-2 for which a Declaration of Performance is available on request.

1 INTEGRITANK® Membrane can be applied at temperatures between -10°C and 50°C. 
Property Value
Application Temperature Range1  
Standard Grade 0°C to +30°C
Tropical Grade 15°C to 50°C
Standard Grade with Arctic Additives -10°C to 0°C 
Typical Overcoating Time 60 Minutes

Surface Preparation

All surface coating systems are dependent on the quality of surface preparation.


New concrete substrates should be a minimum of seven days old and constructed in accordance with BS EN 1992. The substrate must be clean, dry and structurally sound. It must be free from laitance, oils and all other surface contaminants.

Where the use of a non-structural screed or a lightweight concrete substrate is proposed, contact Technical Services as these materials often have low cohesive strength or retain water in open pores.

Use METASET® ResiFilla Repair Compound for repairs to damaged concrete


On steel surfaces all rust, dirt and contamination should be removed to expose bright metal to achieve a surface finish to comply with Swedish standard Sa 2.5.

For compatibility with other construction materials or where additives, cement replacement or curing compounds have been used please consult the Technical Services Department.



The substrate must be primed with an appropriate GCP primer prior to application of the INTEGRITANK® membrane. A choice of primers is available depending on the type of substrate and weather conditions. They are usually applied using a brush or roller. Please consult the appropriate datasheets.


Both INTEGRITANK® Hand and Sprade Grade are applied in two colour-coded coats.

INTEGRITANK® Spray Grade is spray-applied to give a minimum dry film thickness of 2mm (1mm per coat). The coverage rate will vary with surface texture.

INTEGRITANK® Hand Grade system is poured onto the substrate and spread using a trowel and / or brush. For vertical surfaces the material should be applied by brush. The material should be applied in two even coats to give a minimum dry film thickness of 1mm per coat.

Both INTEGRITANK® Spray and Hand Grade can be trafficked or loaded once fully cured.


Primer: refer to separate datasheet

Membrane (Spray & Hand Grade): typically 1.4kg/m2/coat

Coverage rates are based on a smooth substrate and will vary with surface texture and porosity.


All tools and equipment should be cleaned with acetone before the material is allowed to cure.

Packaging & Storage

Primer: refer to separate datasheets
Spray Grade Membrane: 48kg & 400kg kits, including BPO powder catalyst
Hand Grade Membrane: 20kg, resin only
BPO Liquid Catalyst, pack: 5kg & 20kg (for use with Hand Grade)

  48 Kg KIT size 400 Kg KIT size
  Pail size Pails/pallet Drum size Drums /pallet
INTEGRITANK® Part A 24 Kg 12 200 Kg 2
INTEGRITANK® Part B* 23.04 Kg 12 192 Kg 2
BPO Powder Catalyst 920 g ** 8 Kg **

All components of the INTEGRITANK® system should be stored in cool, dry, protected conditions, out of direct sunlight and in accordance with the relevant site Health & Safety regulations.

Storage temperature must not exceed 25°C. Do not store near naked flames or foodstuffs.

Stored in unopened containers, under the correct conditions, the components have a minimum shelf life of twelve months.

If your product is more than twelve months old you must contact Technical Service before use.

Special Note: Air Freight packaging is available on request.

Please contact your local GCP representative.

* INTEGRITANK® Part B is supplied in Yellow and Mid Grey for 2 color-coded application.

Please refer to application guideline or consult your GCP representative. 


GCP produces a range of products to compliment the INTEGRITANK® system. These include:

  • SENTINEL® Expansion Joints – a range of compatible expansion joint details.
  • METASET® – a range of ESSELAC resin based rapid curing levelling and repair compounds.
  • GCP Smoothing Primer - a levelling primer.
  • Sealants – a range of flexible sealants for all joints and cracks.

Health and Safety

Please refer to our safety datasheets for further information.

General Information

INTEGRITANK® is part of a wide range of specialist waterproofing, surfacing and repair materials manufactured and supplied by GCP.

If you require any further information on this or any other of our products, please do not hesitate to contact us or visit

Technical Properties of Membrane
Minimum Thickness ASTM D412 2mm minimum
Elongation BS903:A2, BS ISO37; ASTM D412 >130%
Density of cured membrane ASTM D792 >1.10g/cm3
Tensile Adhesion Strength of membrane BS EN ISO 4624
Concrete Substrate
Steel Substrate
PVC Substrate

≥0.7 MPa
≥ 2.0 MPa
≥2.0 MPa
Intercoat overlap adhesion, after 7 days without surface preparation Same as tensile adhesion of membrane to the surface BS EN ISO 4624
Water Vapor Transmission ASTM E96 at 230 C <4g/m2 /day
Tensile Strength BS 903:A2 BS ISO 37; ASTM D412 ≥12MPa
Shore Hardness BS2782: Part 3 Method 365BBS EN ISO 868 ≥40 (Shore D)
Water penetration British Board of Agreement Tanking Certification Zero
Chisel Impact British Board of Agreement Tanking Certification Pass
Aggregate Indentation British Board of Agreement Tanking Certification Pass
Static Crack-Bridging ASTM C836 2mm @ -26C
Resistance to abrasion Taber Method
H22 Wheel – 1000 cycles (or equivalent test approved by the Engineer)

Hydrostatic head resistacne ASTM 5385 >70 meter | United Arab Emirates customer service: +971 4 5139560

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.

INTEGRITANK® and METASET® 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 2018 GCP Applied Technologies Inc.


GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA
P. O. Box 5006, Office 2104, 21 Floor, The Exchange Tower, Opp. JW Marriott Marquis Hotel, Business Bay, Dubai – United Arab Emirates
This document is only current as of the last updated date stated below and is valid only for use in the UAE. 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: 2022-11-18