For interior floor preparation where levelling compounds or cementitious adhesives must bond reliably to both absorbent and non-absorbent surfaces, Eco Prim T Plus Primer establishes a high-adhesion keyway. This solvent-free acrylic resin-based primer in water dispersion prepares challenging substrates—including very compact concrete, old adhesive residues, non-porous ceramic tiles, and moisture-stable timber—to prevent debonding and levelling failures.
Eco Prim T Plus Primer forms a flexible, water-resistant film that bridges the gap between the substrate and the subsequent smoothing compound or mortar. When applied to porous surfaces like cementitious renders or gypsum, it regulates substrate absorption to prevent the levelling compound from drying out too quickly. On non-absorbent surfaces like terrazzo, ceramic, or natural stone, it provides the mechanical grip necessary for cementitious materials to adhere. It also functions as a bonding aid over non-sanded epoxy or polyurethane moisture vapour barriers, such as Primer MF or Mapeproof 1K Turbo, provided the subsequent levelling layer is kept under 10 mm in thickness.
Ensure all substrates are uniformly dry, sound, and free of dust, loose particles, paint, wax, oil, rust, or other bond-inhibiting contaminants. Apply the primer using a brush or roller. Dilute the primer 1 to 2 with water when applying to absorbent cementitious or anhydrite surfaces. Apply undiluted on non-porous surfaces, including existing ceramic tile, natural stone, wood, and water-resistant adhesive residues. For applications over unsanded Primer MF or Mapeproof 1K Turbo moisture barriers, apply Eco Prim T Plus Primer undiluted once the barrier is dry (2 to 4 hours) and strictly within 24 hours of the barrier application.
No. Eco Prim T Plus must be applied only to dry substrates. For screeds over bare ground or lightweight concrete, install a vapour barrier first to avoid adhesion failure.
Apply levelling compounds within 24 hours of priming. Waiting longer can reduce bond strength and may require re-priming.
Yes, dilute 1:2 with clean water for absorbent cementitious substrates. Use undiluted on ceramic, natural stone, wood, and adhesive residues.
Coverage varies from 0.10 – 0.20 kg/m² depending on substrate porosity and application method (roller or brush).
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Priming compact or smooth concrete floors before levelling | Creates a high-bond surface ensuring levelling compounds adhere reliably | Tilers, Flooring Installers |
| Surface preparation over old adhesive residues | Bonds to water-resistant residues, avoiding costly full removal | Remedial Contractors, Builders |
| Priming ceramic or natural stone substrates | Allows direct application of smoothing compounds without tile removal | Tilers, Builders |
| Bonding aid over epoxy or polyurethane vapour barriers | Provides a secure bond where no sand broadcast is present | Waterproofers, Flooring Installers |
| Preparation of timber, plywood, or chipboard subfloors | Seals surface, prevents uneven absorption, and improves adhesion | Builders, Flooring Contractors |
Ensure the substrate is sound, dry, and free of contaminants. For unbonded screeds, verify a vapour barrier is installed to prevent rising damp.
Use Eco Prim T Plus as supplied for non-absorbent substrates. Dilute 1:2 with water for absorbent screeds and concrete to ensure proper penetration.
Apply with a brush or roller, ensuring complete coverage without pooling. Avoid leaving puddles, which can create weak spots in adhesion.
Clean tools, hands, and spills immediately with water. Once cured, remove with alcohol or Mapei Pulicol 2000.
Wear protective gloves and safety goggles during application. Use work clothing that prevents skin contact.
Ensure adequate ventilation when working indoors, although Eco Prim T Plus is low VOC and installer-safe.
Product is non-flammable. Store in sealed containers and avoid freezing conditions.
Seek medical attention immediately in all cases of serious exposure.
Ensure the surface is structurally sound, uniformly dry, and free from dust, laitance, oils, and contaminants. Check moisture content and provide a vapour barrier if installed over bare ground or lightweight screeds.
Dilute Eco Prim T Plus 1:2 with clean water for highly absorbent screeds, apply by roller or brush, allow 2–3 hours to dry before proceeding.
Degrease and clean thoroughly, removing waxes and residues. Roughen smooth, glossy tiles if needed to improve key.
Apply directly to tiles using a roller for even coverage. Allow 4–5 hours to dry before smoothing compound or adhesive application.
Use only moisture-stable wood. Ensure boards are fixed securely, clean, and free from dust or oils.
Apply one even coat undiluted with a brush or roller. Allow 2–3 hours drying time.
Ensure the vapour barrier is fully cured (typically 2–4 hours depending on product) and free from dust. Do not wait longer than 24 hours before priming.
Apply one coat undiluted to create a bonding bridge for smoothing compounds up to 10 mm thick.
| Property | Value |
|---|---|
| Colour | Light blue |
| Density | 1020 kg/m³ |
| Viscosity | 600 mPa·s (spindle #2, 30 rpm) |
| Consistency | Fluid liquid |
| Solids Content | 42% |
| pH Value | 7.5 |
| Initial Cure | 30–40 minutes |
| Tiling Ready | 4–5 hours |
| Application Temperature | +5°C to +35°C |
| Coverage Rate | 0.10–0.20 kg/m² (depending on substrate porosity and application method) |
| Standards | Fair (meets basic requirements) |
| Resistance Testing | Excellent (above average) |
| Packaging | 5 kg pail, 20 kg pail |
| Shelf Life | 24 months (unopened, stored correctly) |
| Storage Conditions | Avoid frost and store in original sealed packaging |
Here are some common examples on where Mapei Eco Prim T Plus Primer used by our customers.
