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Gripset GP is a water-based aqueous polymer dispersion primer specifically formulated to prepare porous construction substrates for waterproofing membrane application. By penetrating thirsty surfaces like aerated concrete, masonry, and aged screeds, it creates a stable bond interface that prevents pinholing and system delamination caused by rapid moisture loss.
This fast-drying solution reaches a recoat-ready state in 30 minutes, allowing waterproofing technicians to maintain workflow efficiency in internal wet areas and external balconies without compromising watertight integrity.
Frequently Asked Questions
Can Gripset GP Primer be used externally?
Yes, it is suitable for both internal and external porous surfaces before membrane application.
How long before applying the membrane?
Typically 30–60 minutes under normal drying conditions; ensure the surface is fully dry before proceeding.
Can it be used over non-porous surfaces?
No, GP Primer is specifically formulated for porous substrates. Use a suitable non-porous primer for those surfaces.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Concrete & masonry priming | Seals and reduces porosity for better membrane adhesion | Waterproofers, Builders |
| Wet area substrate preparation | Provides a stable base for internal waterproofing membranes | Tilers, Waterproofers |
| External deck preparation | Improves adhesion and reduces water absorption | Builders, Waterproofers |
Applying Gripset GP Primer: Best Practice Protocols
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Surface Preparation
Ensure substrate is clean, dry, and free from dust, laitance, and contaminants.
Pro Tip: Repair cracks and defects before priming to achieve uniform penetration. -
Primer Application
Apply by brush, roller, or spray at a coverage rate of 8–10 m²/L.
Timing: Allow 30–60 minutes to dry before membrane application.
Limitations & Safety
Product Limitations
Not suitable for non-porous surfaces.
Do not apply to damp or wet substrates.
Avoid application in temperatures below 5°C or above 35°C.
Safety & Handling Requirements
PPE
Wear gloves, eye protection, and protective clothing.
Ventilation
Use in well-ventilated areas.
Emergency First Aid
- Eyes: Rinse with water for several minutes.
- Skin: Wash with soap and water.
- Inhaled: Move to fresh air.
- Swallowed: Rinse mouth; do not induce vomiting.
Gripset GP Primer Adhesion & Preparation Guide
Concrete / Masonry
Ensure clean, dry, and free from contaminants. Apply GP Primer at 8–10 m²/L.
Fibre Cement Sheeting / Timber Sheeting
Ensure sheets are installed per manufacturer’s instructions; prime at 8–10 m²/L.
Aerated Concrete / Brickwork
Clean and dry surface; apply GP Primer liberally to seal pores before membrane application.
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