For porous building substrates where you need to secure a reliable, long-term bond before applying sealants, adhesives, or waterproofing membranes, Everflex Polyurethane Supaprime penetrates deeply to stabilise the surface. This single-part, rapid-curing polyurethane primer is formulated to prepare porous materials and prevent subsequent coating delamination.
Everflex Polyurethane Supaprime uses a moisture-curing polyurethane mechanism with a very low Brookfield viscosity (30–60 cps) to sink deep into porous capillaries. By penetrating the substrate, it consolidates loose or dusty microscopic particles and forms a high-adhesion foundation. The primer dries quickly to a translucent amber film, resisting mould and mildew in hot and humid service environments.
Suitable for internal and external applications over the following substrates:
Formulated as a dedicated bonding agent for:
To verify if the substrate is porous, dispense a puddle of water the size of a 1-dollar coin onto the surface. If the water absorbs in less than two minutes, the substrate is porous. If the puddle remains, the substrate is non-porous.
All surfaces must be structurally sound, dry, clean, and free of dust, oils, grease, curing compounds, and flaking material. If mechanical preparation is required, prepare the floor using dry diamond grinding to achieve a roughened, open porous surface, then vacuum thoroughly. Apply the primer by brush or roller, ensuring the primer stays wet on the surface for 2 minutes. Exceptionally porous substrates may require a second coat of Primer 2001. Allow 60 minutes for curing before applying coatings or compounds over the tacky, non-wet film.
Clean tools and wet spills immediately with Acetone (or Xylene as specified by physical properties). Cured primer must be removed by mechanical means.
Use Everflex Supaprime as a bond-enhancing primer for porous substrates before applying Adheseal sealants or Everflex waterproofing membranes. It ensures deep penetration and a reliable bond, reducing the risk of delamination on concrete, masonry, or timber.
No, do not apply Everflex Supaprime to damp, wet, or contaminated substrates. The surface must be thoroughly dry and clean to ensure proper penetration and adhesion, preventing bond failure.
Allow 0.5 to 1 hour for Everflex Supaprime to become tack-free to a translucent film at 23°C before applying coatings or compounds. This rapid cure window allows for efficient sequencing on site.
Expect a coverage rate of approximately 5 to 10 square metres per litre, depending on the porosity of the substrate. Highly porous surfaces will absorb more primer.
| Application | Key benefit | Primary trades |
|---|---|---|
| Priming porous concrete for sealants | Ensures deep penetration and exceptional adhesion of Adheseal Polyurethane, MS, and Silicone sealants to concrete. | Concrete contractor, Builder |
| Bonding membranes to masonry/render | Enhances the bond of Everflex waterproofing membranes (WPUV, HVUV, WPM Fast cure, Aqua-Ban) to cured masonry and render. | Waterproofer, Tiler |
| Preparing timber flooring for adhesives | Provides a robust bonding surface for Adheseal adhesives on structural plywood Type A flooring. | Carpenter, Flooring installer |
| Priming wet area plasterboard | Promotes strong, reliable adhesion of waterproofing membranes or sealants to wet area plasterboard or Villaboard. | Tiler, Waterproofer |
| Sealing cement sheeting/blue board | Creates a prepared surface that resists delamination for sealants and coatings on cement-based sheeting. | Builder, Painter |
All surfaces must be structurally sound, stable, dry, clean, and free of dust, loose, flaking, friable material and free from oils, grease, form release agents, curing compounds, and any other surface contamination that may hinder adhesion.
If mechanical preparation is required, prepare the floor using recommended methods, such as dry diamond grinding to provide a roughened, clean, sound, and open porous surface. Thoroughly vacuum loose material and dust. Do not use solvents or acid etching to clean the subfloor. Substrate must be free from surface water and continual dampness.
Concrete must be allowed to cure for at least 28 days. Sand cement screeds to be a 3:1 ratio, and cement render must be allowed to cure for at least 4 days prior to application. Failure to do so may result in poor adhesion and subsequent delamination.
Apply by brush and/or roller, ensuring the entire area is completely primed. The primer should stay wet on the surface for 2 minutes. Exceptionally porous substrates may require a second coat of Primer 2001. Allow 60 minutes for curing.
To determine whether the substrate is porous or non-porous, dispense water onto the substrate to form a puddle approximately the size of a 1-dollar coin.
Danger: May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation. Suspected of causing cancer. May cause damage to organs through prolonged or repeated exposure.
Wear rubber boots, overalls, gloves, and a respirator. For inhalation risks, use an organic vapour/particulate respirator meeting AS/NZS 1715 and AS/NZS 1716. Eye/face protection is required.
Use with adequate ventilation. If used outdoors, ensure good air circulation. In enclosed spaces, mechanical ventilation is essential to manage vapours.
Store in original containers in an approved flammable liquid storage area, between 5°C and 35°C, away from incompatible materials, in a cool, dry, well-ventilated space. Avoid pits, depressions, or areas where vapours may be trapped. Keep away from smoking, naked lights, heat, or ignition sources. This material is a Class 3 Flammable Liquid, Division 6.1 Toxic Substance and must be stored according to relevant regulations. Dispose of contents and container in accordance with local, regional, national, and international regulations.
Proper substrate preparation is essential for Everflex Supaprime to achieve optimal adhesion and prevent system failure.
Surface prep: Allow concrete to cure for a minimum of 28 days. Dry diamond grind to achieve a roughened, clean, sound, and open porous surface. Thoroughly vacuum all dust and loose material. Do not use acid etching or solvents for cleaning.
Primer: Required. Apply one coat ensuring full coverage. If exceptionally porous, a second coat may be necessary.
Surface prep: Sand cement screeds must be 3:1 ratio. Masonry and render surfaces require a minimum 4-day curing period. All surfaces must be sound, stable, dry, and free of dust, oils, and contaminants.
Primer: Required. Apply one coat evenly. Check porosity; a second coat may be needed for highly absorbent surfaces.
Surface prep: Ensure timber is sound, dry, clean, and free from any loose material or surface contamination. Mechanical sanding may be required to remove finishes or surface oils.
Primer: Required. Apply a single coat to enhance bond for sealants or membranes.
Surface prep: Surfaces must be dry, clean, and free from dust, flaking material, or other contaminants. Ensure boards are securely fixed and joints are prepared as per manufacturer specifications.
Primer: Required. Apply a full, even coat to ensure consistent adhesion.
| Property | Value |
|---|---|
| Type of Product | Polyurethane primer |
| Curing System | Moisture Cure |
| Appearance | Translucent Amber |
| Density (specific gravity) | 1.12 - 1.16 g/cm³ |
| Consistency | Liquid |
| Brookfield Viscosity at 25C | 30 - 60 cps |
| Pot Life | 10 - 15 Minutes |
| Application Temperature | 5°C - 35°C |
| Application Humidity | Below 85% |
| Tack Free (to touch) @25C and 60RH | 1 - 2 Hours |
| Consumption | 5 - 10 m²/litre |
| Solids Content | 30 - 34% |
| Shelf Life | 12 Months |
| Clean Up (wet) | Acetone |
| Clean Up (general solvent) | Xylene |
| Flash Point | 23-60°C |
| Standard MVT (ASTM E 96-80) | 0.032 perms |
| ADG Class | Class 3, Division 6.1 |
| UN Number | UN1992 |
| UN Proper Shipping Name | FLAMMABLE LIQUID, TOXIC, N.O.S. |
| Hazard Class (IMDG/IATA) | 3 |
| Packaging Group | III |
| Signal Word | Danger |
Here are some common examples on where Everflex Polyurethane Supaprime used by our customers.
