Waterproofing over challenging non-porous surfaces like glazed tiles, metals, or dense timbers no longer demands harsh etchants or compromised bonds. Gripset Xpress SP delivers secure, solvent-free adhesion for Gripset waterproofing systems on these difficult substrates. It brings the same enhanced bonding performance to standard porous surfaces, streamlining primer selection across diverse project demands.
Gripset Xpress SP was formulated to bridge the gap between demanding non-porous and dense substrates and the need for robust, reliable adhesion for Gripset liquid and self-adhesive membrane systems. Traditionally, achieving strong bonds on surfaces like existing glazed tiles, metal flashings, or dense precast concrete often required aggressive solvent-based primers or surface etching. This product provides a safe, solvent-free alternative that enhances adhesion across a wide spectrum of materials, including general porous surfaces, without compromising bond strength.
Applying Gripset Xpress SP is straightforward, primarily with a low-nap roller or long-bristle brush, ensuring even coverage. Its low dirt retention keeps primed surfaces clean until membrane application. When wet, tools and hands clean up easily with water. If dried, mechanical removal or solvent is required for tools, while solvent-free hand cleaners address cured product on skin.
This primer finds its strength in demanding waterproofing scenarios where conventional primers struggle or are unsafe:
Gripset Xpress SP frequently acts as a secondary adhesion promoter within complex waterproofing systems, often applied after a general-purpose primer like Gripset GP Primer. This layered approach ensures optimal bonding on multi-surface applications, particularly for projects involving both porous and non-porous elements. It precedes the application of Gripset liquid membranes such as Gripset BRW PF or Gripset 38FC, and is used with prefabricated corners to complete the waterproofing envelope.
While some primers rely on dangerous solvents or etching to achieve bond on challenging surfaces, Gripset Xpress SP offers a solvent-free alternative for superior adhesion on non-porous, dense, and smooth substrates, along with porous surfaces. When the job primarily involves standard porous concrete or masonry, Gripset Xpress Primer H2O Plus is a fit-for-purpose water-based primer. However, for diverse substrate conditions, particularly those including non-porous surfaces like metals or glazed tiles, Xpress SP's broader adhesion profile and solvent-free formulation simplifies selection and enhances safety. For cementitious repairs or bonding agents, Gripset 11Y Primer serves a distinct function.
Yes, this primer is specifically formulated for high adhesion on smooth, non-porous substrates including galvanised iron, Colorbond, aluminium, stainless steel, and glazed ceramic or vitrified tiles. It provides bonding without etching, which saves time and avoids hazardous chemicals.
No, Gripset Xpress SP is not designed for continuous immersion or for areas with rising moisture or negative hydrostatic pressure. Always confirm the application environment aligns with product limitations to prevent system failure.
Gripset Xpress SP dries in 30 minutes at 23°C and 50% relative humidity. This rapid dry time allows for quicker application of subsequent membranes or coatings, improving project efficiency on site.
Yes, Gripset Xpress SP has Nil VOC content, making it a safer option for internal and external applications. Its solvent-free formulation also avoids the hazards associated with traditional solvent-based primers.
| Application | Key benefit | Primary trades |
|---|---|---|
| Priming metal sheeting (Colorbond, zincalume, galvanised iron) | Ensures reliable adhesion for subsequent membranes or coatings on typically difficult, smooth metal surfaces, preventing delamination without mechanical etching. | Roofers, Waterproofers, Commercial builders |
| Preparing existing glazed or vitrified tiles for overlay | Promotes strong bond strength (0.83 MPa on glazed tiles) for new waterproofing, screeds, or tile-over-tile systems, avoiding costly tile removal. | Tilers, Renovators, Waterproofers |
| Adhesion enhancement on dense concrete (precast, tilt-up) | Provides documented adhesion greater than 1.23 MPa on concrete, ensuring robust bonding for liquid membranes and overlays where absorbency is low. | Concreters, Commercial contractors, Waterproofers |
| Priming rigid plastic surfaces | Allows reliable adhesion for finishes or membranes on smooth plastic substrates, expanding application possibilities where standard primers fail. | Waterproofers, Sign installers, Fabricators |
| General adhesion promoter for various porous surfaces | Works as a versatile primer on standard porous surfaces, simplifying product selection for mixed substrate projects. | General builders, Painters, Maintenance crews |
Ensure substrates are structurally sound, smooth, dry and clean. Remove dust, oils, release/curing agents, laitance, loose coatings and contaminants. Mechanically abrade/deglose glossy areas; repair voids and defects before priming.
Grind or abrade dense/smooth surfaces (e.g., glazed tiles, metals) to create a uniform key; vacuum thoroughly.
On metals and rigid plastics, solvent-wipe to remove oils/grease after abrasion. Allow to dry completely before priming.
Stir product well before use. Do not dilute. Suitable for brush, low-nap roller, or spray application.
Use a low-nap roller or long-bristle brush to lay an even, thin coat without pooling.
For large areas, spray apply a uniform film; verify equipment settings with a small test area.
Apply a single, continuous, thin coat to achieve full, even coverage. Avoid runs or excessive film build.
On smooth, dense surfaces (metals, glazed tiles, GRC): approx. 1 L / 12 m².
On absorbent/rough areas, coverage may reduce (up to 1 L / m² depending on porosity/texture). Apply only enough to wet the surface uniformly.
Once dry, overcoat with Gripset self-adhesive sheet or liquid membranes, or compatible coatings/adhesives as specified. Verify bond with a quick pull test on unusual substrates.
Apply between 5°C and 35°C in dry, well-ventilated conditions. Keep substrates dry during application and drying.
Clean tools with water while wet. Once dried, remove mechanically or with an appropriate solvent.
Store sealed at room temperature, off concrete floors, away from freezing and direct sun. Shelf life: up to 24 months (unopened).
Wear safety shoes, overalls, gloves, and safety glasses. Gloves made from nitrile rubber are suggested for intermittent contact. Always wash hands before eating, drinking, or smoking.
Natural ventilation is adequate under normal use conditions.
Store in a cool, dry, well-ventilated place, out of direct sunlight, and away from incompatible materials. Avoid freezing conditions and storing directly on concrete floors. Keep containers closed and check for leaks. Shelf life is 24 months in an unopened container. Dispose of material and containers according to local, regional, national, and international regulations.
Proper surface preparation is critical for Gripset Xpress SP to achieve its documented adhesion strength, especially on challenging surfaces.
Surface prep: Surfaces must be structurally sound, dry, and clean. Remove all oils, grease, loose material, and foreign particles. Mechanical removal by abrasive blasting or grinding may be necessary for unsound layers or contaminants.
Primer: Required. Gripset Xpress SP is formulated to enhance adhesion on these smooth, non-porous materials without prior etching.
Surface prep: Ensure surfaces are stable, dry, and free from wax residues, oils, or loose material. Mechanically remove any de-bonded coatings or contaminants. Fill rough surfaces or voids first.
Primer: Required. This primer provides the necessary bond to existing hard, dense, and non-absorbent tiled surfaces.
Surface prep: Substrates must be sound, smooth, stable, dry, and clean. Point brick/block surfaces flush. Remove all laitance, curing membranes, release agents, algae, or moss. Mechanical methods like blast tracking or grinding are effective for surface contaminant removal.
Primer: Required. Gripset Xpress SP bonds to these dense and often non-absorbent concrete and masonry types, as well as being suitable for porous variants.
| Property | Value |
|---|---|
| Form | Viscous Liquid |
| Colour | Off-white, not opaque |
| Specific Gravity | 1.24 g/cm³ |
| pH | 7.0-8.5 |
| Drying Time | 30 mins @ 23°C & 50% RH |
| Viscosity | 4000 mPas |
| Adhesion (Concrete) | > 1.23 MPa |
| Adhesion (Glazed tiles) | 0.83 MPa |
| Adhesion (Hardies Scyon™) | 0.8 MPa |
| Adhesion (Particle board wet area grade) | 0.6 MPa (failure within timber surface) |
| VOC Content (ISO 13741-1) | Nil |
| Shelf Life | 24 months in unopened container |
Here are some common examples on where Gripset Xpress SP Primer used by our customers.
