Description
Sika’s SikaTile-015 Prep N Prime is a blue liquid primer built for the surfaces a standard cement-based system struggles to bond to: non-porous, smooth or glossy substrates such as existing vinyl tile and laminate. Its fast-drying formulation is aimed at keeping tiling schedules moving rather than waiting out a slower conventional primer.
Being tinted blue when wet is a practical feature as much as a colour choice — it makes it straightforward to check that a surface has had full, even coverage before moving on to the next step. That matters more on non-porous substrates than porous ones, because there’s no absorption to signal a missed patch the way there is on bare concrete, so a visual check is the only real way to confirm coverage before priming dries.
Technical Specifications
| Product type | Fast-drying liquid primer for non-porous surfaces |
|---|---|
| Appearance | Blue liquid |
| Coverage | Approx. 8 to 10 m² per litre |
| Packaging | 1 litre pail or 4 litre pail |
| Shelf life | 12 months from date of manufacture, unopened |
| Storage conditions | Dry, cool conditions, out of direct sunlight |
Where to Use
- Non-cushion-backed vinyl tiles and laminates ahead of tiling
- General non-porous and shiny or glossy surfaces in dry areas, where a standard cement-based primer would not key in reliably
- Priming ahead of waterproofing membranes on smooth substrates
- Areas of negative hydrostatic pressure where standard porous primers aren’t appropriate
- General wet-area substrates that need to accept a membrane or adhesive despite having little natural porosity
- Suitable substrate preparation for both waterproofing membrane systems and tile adhesive systems
How to Apply
- Prepare the surface — it must be clean, dry and free of dust before priming.
- Apply the primer — spread evenly to achieve full coverage, using the blue colour as a visual check for consistency.
- Allow to dry and harden — the surface must be completely dry before waterproofing or tiling proceeds.
- Proceed with the system — apply the waterproofing membrane or adhesive once the primer has fully cured.
Important Notes
- SikaTile-015 NPP must be fully dry and hardened before the waterproofing membrane or adhesive is applied over it.
- Suitable for areas subject to negative hydrostatic pressure, in addition to standard non-porous priming.
- For porous substrates, use a porous-surface primer such as SikaTile-010 Secure Prime instead.
- Drying speed still depends on ambient temperature and airflow; check the surface by touch rather than relying on elapsed time alone.
