SILCOR® Primer BS
Primer for Elastomeric Polyurethane Membranes
(to replace AQUAGARD™ M Clear Primer)
Product Description
A fast-drying, single-pack, modified polyurethane primer for use with all SILCOR® polyurethane-based membranes.
Uses
SILCOR Primer BS is used for all SILCOR polyurethane-based membranes.
It may be applied to most rigid substrates used in construction including: concrete masonry, off-form concrete, in-situ concrete slabs and topping, shotcrete and cement render, light-weight foamed concrete, pre-cast concrete panels, compressed fibre cement sheet, metal and brick.
Features
- Strong physical bond to substrate Fast-drying PU resin system
- Coating is water-resistant and protects the structure in the event of interruption by wet weather Promotes adhesion even in cold weather
Substrate Preparation
Substrates must be structurally sound, smooth, clean and dry. Remove all dust, laitance, loose matter, oil, curing compound, form release agents, or other contaminants.
Concrete should have a minimum strength grade of 25 MPa, and be moist-cured as required by AS 3600. Minimum age of concrete at time of waterproofing application should be 14 -28 days depending on concrete thickness and GCP primer being used.
Detailing
Detail according to NCC, and AS 4654.2 and AS 3740 requirements for external above ground and internal wet areas, respectively. Detailing should be completed before priming process starts.
Primer Application
SILCOR Primer BS is used for substrates with maximum moisture content of 5%. For moisture content less than 10%, use SILCOR Primer BW Clear/EPOCOTETM F100W Clear.
Apply one coat directly from container using brush, roller or spray. Allow primer coating to become tack-free before applying waterproof membrane. Only apply primer to substrate that will be membrane coated within 24 hours.
Apply the selected SILCOR polyurethane waterproofing product in strict accordance with product instructions.
Any primed area not coated with membrane within 24 hours must be first wiped with Xylene. As soon as xylene has dried, reprime with a light coat of SILCOR Primer BS at a rate of approximately 0.15kg/m2. Any applied primer that has not been coated with membrane within 72 hours of application, must be fully removed by diamond grinding and re-primed.
Typical Properties
| PROPERTY | TYPICAL VALUE |
|---|---|
| Colour | Clear |
| Specific Gravity | 0.9-1.0g / mL |
| Viscosity | 500 mPa.s |
| Water Resistance | Excellent |
| Drying Time @ 20°C | 30 - 60 minutes |
Coverage
Minimum application rate is approx. 0.3kg /m2 (0.3 litres/m2).
Packaging
SILCOR Primer BS is packed in 17kg metal pails.
Storage
Stored in a cool, dry place. Unopened cans have a shelf life of 12 months.
Keep away from any fire hazards or ignition sources.
Health and Safety
Read and understand the product label and Safety Data Sheet (SDS) for each system component. All users should acquaint themselves with this information prior to working with the products and follow the precautionary statements. SDSs can be obtained by contacting your local GCP representative or office.
Limitations
Information contained in this document does not cover all possible application scenarios or imply product suitability for an application. Please contact your local GCP representative or the GCP Technical Department for further information.
Warranties
GCP and contractors recognised by GCP as experienced in the application of GCP products will provide warranties for individual projects. Warranty periods offered are dependent on project details and complexity. Requests for very long warranty periods may necessitate increased membrane thicknesses to ensure longevity.
Contact your local GCP representative for further details.
Release Date: 01 Sep 2021. The information contained in this product data sheet supersedes all previous versions.
gcpat.com.au | Australia customer service: 1800 855 525
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.
AQUAGARD, EPOCOTE and SILCOR are trademarks 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., 62 Whittemore Avenue, Cambridge, MA 02140, USA
GCP Australia Pty. Ltd., 14 Colebard Street West, Archerfield, Brisbane, Queensland 4108, Austral
GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA GCP Australia Pty. Ltd., 14 Colebard Street West, Archerfield, Brisbane, Queensland 4108, Australia This document is only current as of the last updated date stated below and is valid only for use in Australia. 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.com.au. 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: 2023-07-06
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