GCP Applied Technologies

Integritank Spray-Applied roof waterproofing system

Manufacturer: GCP Applied Technologies 

Materials: Poly Methyl Methacrylates (PMMA) 

The Integritank Spray-Applied Roof Waterproofing System comprises:

• PA1 Primer — a single-component, solvent-based ESSELAC resin solution primer, for use on concrete at temperatures above 5°C . The primer is generally for summer use.
• PAR1 Primer — a two-component, solvent-free, reactive ESSELAC resin, for use on concrete at temperatures up to 30°C
• Zed S94 Primer — a single-component, solvent-based, anti-corrosive metal primer
• Integritank (Spray Grade) Waterproofing — a three-component, solvent-free ESSELAC resin, comprising Parts A and B, pigmented white, yellow or grey
• Integritank Patch Repair HG (Hand Grade) Waterproofing — a two-component, solvent-free ESSELAC resin, for repair work and use in inaccessible areas
• Hardener Powder — for use with PAR1 Primer, Integritank (Spray Grade) Waterproofing Part B and Integritank Patch Repair (HG) Waterproofing.

BBA logo

Number: 19/5664
Issue date: 22/07/2019

Approved for use on

Flat Roofs Green Roofs Inverted Roofs Pitched Roofs Protected Roofs Roof Gardens Zero Falls Buried Roofs 

The Integritank Spray-Applied Roof Waterproofing System is satisfactory for use as a waterproofing layer on new and existing pitched, flat, including protected zero falls roofs, in:
• inverted roof specifications using aggregate ballast on flat roofs with limited access
• protected roof specifications using pavers or other suitable protection on flat roofs with limited or pedestrian access
• green roof (extensive) — a roof with a shallow layer of growing medium planted with low-maintenance plants such as mosses, sedums, grasses and some wild flower species
• roof garden (intensive) — a roof with a substantial layer of growing medium with planting that can include shrubs and trees, and generally accessible to pedestrians
• biodiverse specifications (similar in composition to an extensive roof but designed specifically to create a habitat) on flat roofs with limited or pedestrian access or pitched roofs with limited access


Concrete Metal 

The system is suitable for use on primed concrete and metal substrates.


25 Years 

Under normal conditions, the system will have a service life of at least 25 years. Where the system is used in a fully protected specification and is subjected to normal service conditions, it will provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated.

Installation Requirements

The system must only be installed by contractors who have been trained and authorised by the Certificate holder.

Fire Safety

The system, when used in protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Building Regulations.

In the opinion of the BBA, when used in irrigated green roof or roof gardens the system will also be unrestricted.

If allowed to dry, the plants used may allow flame spread across the roof. This should be taken into consideration when selecting suitable plants for the roof. Appropriate planting irrigation and/or protection should be applied to ensure that the overall fire-rating of the roof is not compromised.

The designation of other specifications should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B, Appendix A, clause 1 Scotland — test to conform to Mandatory Standard 2.8, clause 2.8.1(1)(2) (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic). Northern Ireland — test or assessment by a UKAS-accredited laboratory, or an independent consultant with
appropriate experience.

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GCP Applied Technologies

580/581 Ipswich Road

T : 01565 633111

E : SalesOrders.gcp-UK@gcpat.com

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