Achieve superior, reliable adhesion for your Adheseal water-based membranes and coatings on internal porous substrates. Everflex Primer WBP ensures the bond lasts, preventing costly membrane delamination and system failures in critical wet areas. Get the preparation right the first time.
Why this product exists
Everflex Primer WBP is a water-based, concrete-compatible polymer emulsion formulated to prepare porous internal substrates for Adheseal water-based membranes and coatings. It penetrates the surface, bedding down dust and stabilising the substrate, which is crucial for creating a strong, lasting bond for the subsequent waterproofing layer. This ensures the entire system performs as specified.
We formulated Everflex Primer WBP with very low Volatile Organic Compounds (VOCs), meeting the stringent 'Green Star' environmental criteria. This makes it a compliant choice for projects where environmental responsibility is a priority, without compromising on adhesion performance.
What it's like to use
Applying Everflex Primer WBP is straightforward. Ensure your substrate is clean, dry, and sound. Use a brush, broom, roller, or spray for application. Aim for one good coat. If the surface is particularly porous or friable, apply a second coat to ensure adequate penetration and dust suppression. Clean tools with water while the product is still wet. Once dried, mechanical cleaning is necessary.
Where this product excels
Everflex Primer WBP is specifically engineered for internal applications where water-based membranes are critical. It excels in:
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Wet areas: bathrooms, showers, laundries, and kitchens: Priming concrete slabs, cement renders, and fibre cement sheeting before the application of a waterproofing membrane.
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Stabilising dusty concrete and screeds: Ensuring a stable, dust-free surface for optimal adhesion of subsequent coatings or membranes.
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Green Star compliant projects: Its very low VOC formulation makes it suitable for environmentally certified building projects.
How it fits in a real system
In typical wet area waterproofing systems, Everflex Primer WBP is the foundational first step after surface preparation. It is applied directly to the porous substrate, such as concrete or fibre cement sheet, before the application of the main Adheseal water-based membrane like Everflex WPM or Everflex Aqua-Ban. This sequence ensures the membrane bonds effectively to the prepared surface. After the membrane is applied, you proceed with tile adhesive and then complete the system with a sanitary silicone sealant like Adheseal S100.
Choosing the right primer: Everflex Primer WBP vs. Everflex Multi-Prime
Everflex Primer WBP is specifically engineered for priming porous internal surfaces, such as concrete and cementitious boards, intended for use with Adheseal water-based membranes and coatings. It excels in wet areas like bathrooms and laundries where consistent adhesion to porous substrates is paramount.
In contrast, if your project involves a wider range of substrates, including some non-porous types, or requires external application versatility with a different range of membranes, consider Everflex Multi-Prime Waterproofing Membrane. Multi-Prime offers a broader compatibility profile, making it suitable when Everflex Primer WBP’s specific internal, porous-surface focus doesn't align with all your project's requirements.
