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EC-PS

polymer-silicate exterior coating premium matt

2025-10-14T12:00:04+01:00

Terrix® EC-PS
polymer-silicate exterior coating
premium matt

Polymer-silicate external coating based on specially modified potassium water glass, designed as a top coat for façades, Terrix® render systems, including EWI systems. Due to its properties is particularly recommended as a new or renovation coating for mineral substrates (such as traditional lime, lime-cement and cement renders and thin-coat mineral, silicate and polymer-silicate renders).

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Benefits

Main properties:

  • Extended resistance to dirt due to the lack of surface electrostatics;
  • Highly extended lifespan vs silicone and acrylic-based paints;
  • Bonding to the substrate by chemical reaction – no risk of flaking or delamination;
  • High resistance to algae growth;
  • High vapour permeability;
  • High resistance to elements;
  • Low water absorption;
  • Suitable for spray application (up to 5 times faster);
  • Suitable for any mineral substrates and pained substrates.

Technical Data

Basic binder: specially modified potassium water glass;
Pigments: UV and weather-resistant, inorganic colour pigments;
VOC content: cat. A/c. The product contains less than 40 g/L VOC;
Density: approx. 1.60 g/cm³;
Colours: white, Terrix® colour chart, NCS or based on the sample provided;
Gloss level: matt;
Diluent: water;
Maximum relative humidity during application: ≤ 75 %;
Wet scrub resistance: ≥ 2,000 brush strokes;
Water vapour permeability: Class V1;
Water absorption: Class W3;
Average consumption: approx. 0.33 L/m2 (double coating on a smooth surface);
Temperature of application (air and substrate): from +5 °C to +25 °C;
Packaging: 10 L plastic container;

Storage: store in the tightly sealed, original packaging in a cool area, ensuring protection against frost. Opened packaging should be tightly closed and used 
as quickly as possible;
Shelf-life: 12 months from the date of production (factory-sealed packaging).

CAUTION: Keep the product out of reach of children.

Application

Substrate preparation:

Apply to a sound, clean substrate (without cracks and delamination), degreased, even, dry, and biological or chemical efflorescence free. The substrate should be free of algae/ fungi growth.
In case of microbial contamination, the substrate should be cleaned with a power washer. Subsequently, a biocide solution for removing microbial contamination is to be applied as per the product manual. Any loose layers not bound to the substrate (such as loose plasters or flaked paint coats) should be removed. Wash and degrease old and dirty substrate with water and a cleaning agent. If there are any significant irregularities to the substrate, these should be levelled out using a levelling compound. Minor irregularities can be levelled with levelling render.

PRIMING: Before paint application, absorbent or dusty (strongly chalking) substrates should be primed with Terrix® PR-PS-P. Once the primer is completely dry (approx. 12 h), Terrix® EC-PS may be applied.

Note: The primer coat may not be applied on newly completed mineral substrates (i.e. cement, concrete, and lime mortar renders) – min.: 2 weeks curing period is required.

Preparation:

The packaging contains a ready-to-use product. If required, add a small amount of clean water: max. 10 % for the first coat and max. 5 % for the second coat (quantity of added water may vary for different substrate types, weather conditions and application methods).

Application method:

Apply the product in two coats by brush, roller or spray (including the “airless” method). Apply the second coat after the first coat has completely dried, i.e. at least 24 hours. Use mechanical spraying only in windless conditions. It is recommended to use a special roller for facade paints made of woven polyamide with a minimum pile length of 18 mm.

Drying:

One coat of paint is applied to the substrate (at a temperature of +20 °C and relative humidity of 55 %) and dries in about 3 hours.
It takes at least 24 hours for the Terrix® EC- PS to set (cure) fully.

Note: Low temperatures and high humidity increase the drying time of the paint. Protect the newly applied paint from precipitation and condensation until completely dry.

Useful hints: 

Colour differences may be avoided by applying a single product batch to the entire wall or element in one working cycle.
During the application and drying of the paint, it should be dry with the air temperature between +5 °C and +25 °C.
Work should not be carried out on surfaces exposed to direct sunlight, strong winds or high humidity. To protect the freshly applied product from the weather, it is recommended to use suitable protective nets on scaffolding.

Additional options:

To maximise the product’s resistance against algae and mould growth (especially when renovating EWI systems and when painting facades in shaded areas
with increased humidity and high plant concentration), a special formulation can be used (for an additional surcharge).

When applying to substrates with cracks up to 0.3 mm (e.g. shrinkage cracks in render), it is recommended to use Terrix EC-PS-RN microfibre reinforced coating for the renovation.

Airless spraying:

 

Manufacturer

Device

Nozzle/tip

Pressure[bar]

Filter (mesh)

Dilution [%]

Output [l/min]

WAGNER

ProSpray 3.21

0552-519

200

60

10÷20

1.25

TITAN

Titan 450e

661-519

200

60

10

1.25

GRACO

UltraMax II 795

PAA621

170

60

5

3.6
Property

High quality silicon paints in the U.K.
(manual application)

 PCC TERRIX® EC-PS polymer-silicate
premium finishing coat
1 Coating type silicone polymer-silicate
2 Category premium premium
3 Black mould/ algae resistance limited very high
4 Adhesion to substrate mechanical (film) chemical bonding
5 Risk of cracking or flacking high none
6 Dirt resistance average very high
 7 Vapour permeability average very high
 8 Application on not fully dry substrates not possible possible
 9 Resistance to elements average very high
10 Spot repair difficult easy
11 Flame Retardancy none Category A
12 Colour resistance average to good very good
13 Water absorption low very low

Case study

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December 8th, 2022|Case study|

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Q&A

Terrix® EC-PS is a premium polymer-silicate external coating designed as a topcoat for façades, Terrix® render systems, and EWI systems. It is particularly recommended for mineral substrates such as lime, lime-cement, and cement renders, as well as silicate and polymer-silicate coatings.

Terrix® EC-PS provides extended resistance to dirt due to its anti-static properties, a highly prolonged lifespan compared to silicone and acrylic-based paints, and excellent vapour permeability. It also bonds chemically to the substrate, preventing peeling and delamination.

The substrate must be sound, clean, degreased, dry, and free of cracks, delaminations, and biological or chemical efflorescence. If microbial contamination is present, high-pressure washing followed by a biocide solution should be used. Loose layers must be removed, and irregularities should be levelled with a levelling compound.

The product should be applied in two coats using a brush, roller, or spray (including airless spraying). The second coat should be applied after the first coat has dried completely (at least 24 hours). A woven polyamide roller with a minimum pile length of 18 mm is recommended for best results.

The coating should not be applied on surfaces exposed to direct sunlight, strong winds, or high humidity. Low temperatures and high humidity extend drying time. To prevent color differences, the entire façade should be painted using the same product batch.

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