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Primer VBS: A Product Overview
Stop costly failures caused by moisture vapour transmission. Primer VBS is the professional's choice for a high-performance, two-part primer and vapour barrier. Formulated for trade applications, it penetrates and seals concrete substrates to create a robust, reliable barrier against moisture, ensuring the integrity and longevity of your final flooring system or coating.
Using this system gives you predictable performance, locking out moisture to prevent blistering, delamination, and adhesive failure. It's the smart, no-nonsense solution for protecting your work, your reputation, and your margins. Get the job done with first-time-right confidence.
Core Features & Specifications
- Dual Function System — Acts as both a penetrating primer and a high-performance vapour barrier, reducing application steps and saving valuable job-site time.
- Two-Part Performance — A chemically-curing system (Part A & Part B) that delivers a reliable, non-reactive, and durable moisture barrier.
- Excellent Adhesion — Formulated to prime and seal concrete substrates, creating an ideal surface for subsequent adhesives, membranes, or coatings.
- Professional Grade — A trade-only product designed for critical applications where moisture control is non-negotiable and performance is essential.
The Primer VBS Advantage
- Protect Your Work — Eliminates the risk of moisture-related failures, preventing costly callbacks, repairs, and reputational damage.
- Streamline Your Workflow — Use one product as both the primer and vapour barrier, optimising your application process and material costs.
- Job-Site Certainty — Delivers predictable performance, giving you the confidence that the substrate is properly sealed and ready for the next stage.
- System Compatibility — The ideal foundation for a wide range of flooring systems and coatings, ensuring a reliable bond and long-term success.
Adheseal tips for using Primer VBS
Scenario: Incorrect Mixing
Potential Outcome: Incomplete cure, soft spots, or total failure of the vapour barrier, leading to moisture pass-through and delamination.
Adheseal Best Practice: This is a two-part system. Always mix Part A and Part B according to the Technical Data Sheet. Use a mechanical mixer at low speed and ensure you scrape the sides and bottom of the container to get a uniform, streak-free mix. Do not guess proportions.
Scenario: Contaminated Substrate
Potential Outcome: Poor adhesion or bond failure. The primer may peel or blister, compromising the entire system and leading to a costly, avoidable callback.
Adheseal Best Practice: Ensure the substrate is 100% clean, dry, and free of dust, oils, laitance, curing compounds, or any other contaminants. A properly prepared, sound substrate is critical for a first-time-right result.
Applications in Practice: Trade Scenarios
For Flooring Contractors: New Slab Installation
The Professional's Challenge
Installing expensive timber or vinyl flooring over a new concrete slab that may still be emitting moisture vapour, risking warping, blistering, or adhesive failure.
The Adheseal Solution
Apply Primer VBS as the first step after slab preparation. The two-part system cures to form a powerful moisture barrier, isolating the sensitive flooring system from slab emissions. Success means you can install the final floor with zero doubt and hand over the job knowing it won't fail.
Best Practice Note
Always refer to the Technical Data Sheet for specific coverage rates and recoat times. Ensuring a pinhole-free, continuous film is critical for barrier integrity.
For Remedial Contractors: Refurbishment Projects
The Professional's Challenge
Prepping an older, existing concrete floor for a new high-performance coating or membrane, where the history is unknown and moisture is a high risk.
The Adheseal Solution
After mechanical preparation (e.g., grinding), apply Primer VBS to seal the porous substrate and act as a vapour barrier. This ensures your new system has a sound, dry, and well-primed foundation. Success means preventing call-backs and ensuring your remedial work lasts.
Best Practice Note
Ensure all old adhesives, sealers, and contaminants are completely removed by grinding before application. The primer's performance depends on a clean, sound substrate.
Frequently Asked Questions
Is Primer VBS a one-part or two-part product?
Primer VBS is a professional two-part system. It consists of Part A (resin) and Part B (hardener). These two components must be mixed together thoroughly before application to initiate the chemical cure and create the functional vapour barrier.
What safety gear (PPE) do I need to use Primer VBS?
You must wear appropriate PPE when handling this product. This includes protective gloves (Nitrile rubber is suggested), safety glasses or chemical goggles, and protective clothing. Part A can cause serious eye irritation and skin irritation or an allergic reaction. If ventilation is inadequate, a suitable respirator is also required.
How does Primer VBS stop moisture?
When Part A and Part B are mixed and applied, the liquid cures into a dense, non-porous film. This cured barrier has a low moisture vapour transmission rate, effectively blocking moisture vapour rising from the concrete slab and protecting the flooring or coating system above from damage like blistering and delamination.
Limitations & Safety
Product Limitations
For Professional Use Only. This product is hazardous and requires professional handling and knowledge. It is not intended for DIY or general consumer use.
Part A is a Class 9 Dangerous Good (UN 3082) and is toxic to aquatic life with long-lasting effects. Avoid release to the environment and collect any spillage.
Part A may cause an allergic skin reaction. Avoid breathing vapours and repeated skin contact. Contaminated work clothing should not be allowed out of the workplace.
Always follow the Technical Data Sheet for mix ratios, pot life, coverage rates, and recoat times. Do not deviate from these instructions.
Safety & Handling Requirements
Personal Protective Equipment
Wear protective gloves (Nitrile rubber suggested), protective clothing (e.g., apron, rubber boots), and safety glasses or chemical goggles.
Ventilation Requirements
Use with adequate ventilation. If inhalation risk exists or ventilation is poor, wear a suitable organic vapour/particulate respirator.
Storage & Handling
Store in a cool, dry, well-ventilated place out of direct sunlight. Keep containers closed when not in use. Avoid eye and skin contact. Wash hands thoroughly after handling.
Emergency First Aid
Eyes:
Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Seek medical attention without delay.
Skin:
Remove contaminated clothing. Wash skin with plenty of water and soap. If skin irritation or rash occurs, get medical advice/attention.
Inhaled:
Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTRE or doctor if you feel unwell.
Swallowed:
Rinse mouth. Immediately give a glass of water. Do NOT induce vomiting. Seek medical advice.
Seek medical attention immediately in all cases of serious exposure.
Applying Primer VBS: Enhanced Protocols & Best Practices
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1. Surface Preparation
The substrate must be clean, sound, dry, and free of all contaminants. Laitance, curing compounds, old adhesives, dust, and grease must be completely removed, typically by mechanical grinding. Ensure all dust is vacuumed from the surface.
Pro Tip: Do not cut corners on prep. 99% of coating failures are due to poor surface preparation. A clean, profiled surface is essential for a first-time-right result. -
2. Mixing
This is a two-part product. Combine Part A and Part B in the specified ratios (refer to Technical Data Sheet). Use a mechanical mixer (e.g., drill with paddle) at a low speed (300-400 rpm) to avoid introducing air.
Mixing Technique
Scrape the sides and bottom of the mixing container thoroughly while mixing to ensure all material is combined. Mix for 3-5 minutes until a completely uniform, streak-free colour is achieved.
Timing: Only mix what you can use within the product's pot life. Do not attempt to "save" mixed product or add solvent to extend it. -
3. Application
Apply the mixed Primer VBS immediately to the prepared substrate. Use a medium-nap roller or brush.
Application Technique
Apply evenly, ensuring a continuous, pinhole-free film to maintain the integrity of the vapour barrier. Work the primer into the substrate to ensure good penetration and adhesion. Observe coverage rates from the TDS.
Pro Tip: Check the Technical Data Sheet for recoat windows. Applying subsequent layers or topcoats within this window ensures a strong chemical bond between layers.
Limitations & Safety
Product Limitations
For Professional Use Only. This product is hazardous and requires professional handling and knowledge. It is not intended for DIY or general consumer use.
Part A is a Class 9 Dangerous Good (UN 3082) and is toxic to aquatic life with long-lasting effects. Avoid release to the environment and collect any spillage.
Part A may cause an allergic skin reaction. Avoid breathing vapours and repeated skin contact. Contaminated work clothing should not be allowed out of the workplace.
Always follow the Technical Data Sheet for mix ratios, pot life, coverage rates, and recoat times. Do not deviate from these instructions.
Safety & Handling Requirements
Personal Protective Equipment
Wear protective gloves (Nitrile rubber suggested), protective clothing (e.g., apron, rubber boots), and safety glasses or chemical goggles.
Ventilation Requirements
Use with adequate ventilation. If inhalation risk exists or ventilation is poor, wear a suitable organic vapour/particulate respirator.
Storage & Handling
Store in a cool, dry, well-ventilated place out of direct sunlight. Keep containers closed when not in use. Avoid eye and skin contact. Wash hands thoroughly after handling.
Emergency First Aid
Eyes:
Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Seek medical attention without delay.
Skin:
Remove contaminated clothing. Wash skin with plenty of water and soap. If skin irritation or rash occurs, get medical advice/attention.
Inhaled:
Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTRE or doctor if you feel unwell.
Swallowed:
Rinse mouth. Immediately give a glass of water. Do NOT induce vomiting. Seek medical advice.
Seek medical attention immediately in all cases of serious exposure.
Primer VBS Application Guide
Concrete / Masonry Substrates
Surface Preparation
Substrates MUST be clean, sound, and free of all contaminants. Remove all dust, laitance, oil, grease, curing compounds, and old adhesives. Mechanical preparation, such as diamond grinding, is typically required for best results. Ensure the surface is dry before application.
Primer Requirements
This product IS the primer
Primer VBS is a self-priming system designed for direct application to prepared concrete and masonry surfaces. No other primer is typically required.
Porous Surfaces
Surface Preparation
Ensure the surface is structurally sound and free from loose or friable material. Clean thoroughly to remove all dust and contaminants. Allow to dry completely.
Primer Requirements
This product acts as a sealing primer
Primer VBS will penetrate and seal porous surfaces, consolidating them and providing a sealed base for subsequent applications. Ensure complete and even coverage.
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