For waterproofing and tiling installations where adhesion to metal flashings, rigid PVC leak control flanges, ceramic tiles, or smooth concrete is required, OP Primer provides a solvent-free bonding bridge. It establishes a secure grip on difficult, non-porous surfaces to prevent Gripset membranes and tile adhesives from peeling or de-bonding over time.
OP Primer dries to a textured, non-tacky finish that creates a mechanical key on smooth substrates. This surface texture gives the subsequent membrane, tile adhesive, or polymer coating a high-friction physical bond, bypassing the need for aggressive solvent-based primers or hazardous etching chemicals. The water-based formulation is low-VOC and dries to a distinct blue colour, allowing installers to easily verify full, uniform coverage across the substrate.
This primer is formulated for application over dry, interior and exterior substrates, including:
All surfaces must be clean, structurally sound, dry, and free of dirt, dust, oils, release agents, laitance, curing compounds, and existing coatings. Unsound layers must be mechanically removed by grinding or abrasive blasting. Point masonry surfaces flush and fill any voids, holes, or non-structural cracks with Gripset 11Y enhanced repair mortar before priming.
Apply OP Primer neat. Do not dilute. Apply one coat by brush or medium nap roller until full coverage is achieved. The primer must be completely dry and tack-free before applying finishes. To avoid surface contamination, apply Gripset membranes, tile adhesives, or approved polymer coatings shortly after the primer has dried. Clean tools in water while the primer is still wet; dried product requires mechanical removal or solvent treatment.
Yes, Gripset OP Primer is suitable for priming ceramic tiles and natural stone. It provides a textured finish to improve the mechanical key for new tile adhesives or membranes.
No, Gripset OP Primer is not for use over damp substrates or areas with rising moisture. For these conditions, use Gripset E60 for proper priming and moisture management.
No, this primer is not a substitute for a waterproofing membrane. It must be covered with an approved wet area membrane system or tile adhesive to achieve waterproofing in wet areas.
Gripset OP Primer is fast drying, typically ready for over-coating in 30 minutes at 23°C and 50% RH. Apply membranes or tile adhesives shortly after drying to prevent surface contamination.
| Application | Key benefit | Primary trades |
|---|---|---|
| Priming metal flashings and waterstops | Ensures reliable adhesion of Gripset membranes to smooth, non-porous metal surfaces, preventing delamination. | Waterproofers, Plumbers |
| Preparing existing ceramic tiles or natural stone for re-tiling | Provides a strong mechanical key on glazed, non-porous surfaces, allowing tile-over-tile applications without extensive grinding. | Tilers, Renovators |
| Priming rigid PVC components like leak control flanges and pipe penetrations | Promotes robust bond development between PVC and subsequent membranes or sealants, crucial for wet area integrity. | Waterproofers, Plumbers |
| Enhancing adhesion on smooth concrete and compressed fibre cement sheeting | Creates a textured, high-adhesion surface for Gripset membranes and tile adhesives, especially on hard-to-bond substrates. | Builders, Waterproofers, Tilers |
Wear safety shoes, overalls, nitrile rubber gloves (for intermittent contact), and safety glasses. Wash hands before eating, drinking, or using the toilet. Wash contaminated clothing before reuse.
Store and use in a cool, dry, well-ventilated place.
Store in a cool, dry, well-ventilated place, out of direct sunlight and away from incompatible materials. Keep containers closed and check regularly for leaks. Store off concrete floors and avoid freezing conditions. Product has a shelf life of 12 months in an unopened container. Clean tools with water while wet. Once dried, product needs mechanical removal or solvent.
Proper surface preparation is critical for Gripset OP Primer to achieve its full adhesion properties on challenging substrates.
Surface prep: Ensure surfaces are clean, sound, smooth, and dry. Remove all loose material, dirt, dust, oil, grease, wax, and other contaminants. Structurally unsound layers require mechanical removal.
Primer: Required. Apply one neat coat for enhanced adhesion of Gripset membranes.
Surface prep: Clean, sound, and dry, free from laitance, curing compounds, or release agents. Address masonry defects by pointing flush and filling voids or non-structural cracks. Not for damp or moisture-prone concrete; use Gripset E60 instead.
Primer: Required on smooth, non-porous concrete. Apply one neat coat to improve mechanical key.
Surface prep: Thoroughly clean to remove all dirt, grease, wax, and surface contaminants. Ensure the surface is dry and free from loose grout or existing coatings that may compromise adhesion.
Primer: Required for tile-over-tile applications. Apply one neat coat to provide a textured bonding surface.
Surface prep: Ensure sheeting is clean, dry, and free from dust, oils, or residues from manufacturing or installation. Boards must be installed according to manufacturer's recommendations.
Primer: Required. Apply one neat coat for reliable adhesion of membranes or tile adhesives.
Surface prep: Clean PVC surfaces thoroughly to remove any release agents, plasticisers, dirt, or grease. Ensure surface is dry.
Primer: Required. Apply one neat coat to secure membrane or sealant bonds around penetrations.
| Property | Value |
|---|---|
| Form | Viscous liquid |
| Colour | Blue |
| Specific Gravity (20 °C) | 1.3 |
| pH | 8 |
| Final Drying Time | 30 minutes |
| Minimum Coverage | 1 litre/10m² (on smooth, non-porous surfaces) |
| VOC Content | Low VOC |
| Shelf Life | 12 months in unopened container |
| Recommended Storage | Room temperature, off concrete floors, avoid freezing and direct sunlight |
Here are some common examples on where Gripset OP Primer used by our customers.
