EWI-333 Top Coat Primer 20kg is a priming paint designed to be used in conjunction with any of silicone based renders to help strengthen the substrate and limit absorptive capacity of the base coat layer without compromising its breathability.

Most popular EWI-333 Top Coat Primer (Priming Paint) colours are: Pure White, Linen, Orchid, Ivory, Mist, Porcelain, Copenhagen, Antique White, Eggshell, Platinum, Elderflower, Fog, Ice, Clay, Haze, Frost, Cloud, Silver, Bone, Sandstone, Parrifin, Magnolia, Prosecco, Opal, Almond, Silk, Sage, Mirror, Concrete, Storm, Diamond, Smoke, Truffle, Ash, Lead and Acorn.

EWI-333 Top Coat Primer is based on potassium water glass and water dispersion of silicon resin and can be tinted in the same colour as the render being used, ensuring that there is no basecoat bleed through.

Top Coat Primer EWI-333 provides an adhesion between the render and the basecoat ensuring the render cures properly which is especially important during the summer months, giving the installer time to get the required finish on the render.

The EWI Pro Top Coat Primer is applied on top of the basecoat reinforcement layer (typically EWI Pro’s Premium Basecoat (EWI-225) or EPS Basecoat (EWI-220) and should be allowed to dry prior to applying one of the EWI Pro range of Silicone renders (e.g. Nano Drex Silicone Render, Premium Bio Silicone Render, Silicone Render or Silicone Silicate Render).

EWI Pro EWI-333 comes as a ready-to-use mixture in 7kg and 20kg plastic buckets.

Specification:

Time to plastering: approx. 24 hours after priming

EWI-333 Top Coat Primer: approx. coverage 65m2

Application: by hand using a roller

Consistency: ready-to-use product

Weight: 20kg

EWI Pro EWI-333 Top Coat Primer Application:

 · Apply EWI-333 primer uniformly to the substrate using a roller or brush and allow to dry.

 · Render should be applied only after the primed surface is allowed to dry for 24 hours.

 · Works must not be carried out at temperatures below +5°C, works on elevations must not be carried out during rain or snow, strong winds and in direct sunlight, without special shields to limit exposure to weather conditions.

 · Recently rendered coats must be protected against rain, frost and over-rapid drying.

 · Caution - The colour of the render primer may be slightly different from the render colour itself due to slight discrepancies between batches.

Substrate Preparation for EWI-333 Priming Paint:

 · All substrates must have appropriate load-bearing capacity and must be dry, compact, stable, even, free of dust, grease, anti-adhesive agents, remaining paint, mould, algae, moss, scratches and salt efflorescence.

 · All contamination resulting from grease, oil or anti-adhesive agents should be cleaned by washing with water and/or a detergent.

 · The surface should be cleaned with a wire brush to avoid biological contamination.

 · Scratched and cracked surfaces should be mended with repair and patching mortar.

 · Mortar applied to repaired sites should be dry and well bonded before the application of primer.

 · Highly absorptive and sandy substrates should be covered with EWI-301 Water Based Primer and allowed to dry for at least 12 -24 hours prior to priming with EWI-333.

 · Surfaces that will not be rendered should be protected prior to priming. 

EWI-333 Certification and Standards:

 · PN-C-81913:1998 Dispersion paints for façade painting.

 · European Technical Approvals ETA – 15/0576 and ETA – 15/0575.

 · BBA Approval Inspection Testing Certificate 18/5503.

*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet