Terrix® PR-UA
universal primer
for absorbent substrates
The primer, formulated with water-borne acrylic dispersions, is designed
for the preparation of absorbent substrates before the application of dispersion paints, levelling compounds, mosaic and mineral renders, adhesive mortars, flooring adhesives and floor coverings.
It is suitable for priming typical absorbent building substrates inside buildings
and is particularly recommended for use before applying Terrix® interior paints, levelling compounds and mosaic renders.
Suitable substrates include concrete, lightweight concrete, cement and anhydrite screeds, cement, cement-lime and gypsum plasters, plasterboard, fibre-cement boards and gypsum wall boards.
Note: Do not use on substrates with low wettability, such as synthetic resin-based renders and paint coatings.
Benefits
Main properties:
- Reduces and equalises substrate absorbency;
- Excellent penetrating properties;
- Strengthens the substrate surface;
- Reduces dustiness;
- Improves adhesion of finishing coatings;
- Suitable for mineral substrates.
Technical Data
Base binder: copolymer binder;
VOC content: cat. A/h. The product contains less than 30 g/L VOC;
Density: approx. 1.00 g/cm³;
Colour: milky, colourless when dry;
Usage: approx. 0.20 L/m², depending on substrate absorbency;
Application temperature, air and substrate: from +5 °C to +25 °C;
Relative humidity: ≤ 80%;
Packaging: 5 L single-use plastic packaging;
Storage: store in the original sealed packaging in a cool, dry and frost-protected room. After opening and using part of the contents, reseal the packaging and use the remaining product as soon as possible;
Shelf life: 12 months from the manufacture date specified on the packaging, provided
that the storage requirements are observed.
CAUTION: Keep the product out of reach of children.
Application
Substrate preparation:
Apply to a sound, clean, dry and degreased substrate, free from cracks, delamination, dust, biological or chemical efflorescence and any other contamination that may reduce adhesion. The substrate must be free from algae and fungal growth.
Substrates affected by fungal growth should be mechanically cleaned and disinfected with a chlorine-free fungicidal preparation suitable for interior use. Discolouration, nicotine stains and efflorescence caused by water staining should be treated
with Terrix® IP-SB stain blocker.
Any loose, non-bonded layers, such as loose plaster or peeling paint coatings, as well as limewash and distemper coatings, must be removed. Old and/or dirty substrates should be washed and degreased with water and a suitable cleaning agent.
Where the substrate is significantly uneven, it should first be levelled with a suitable levelling mortar and then smoothed with a suitable levelling compound.
Minor unevenness may be filled directly with a levelling compound. On absorbent substrates, apply Terrix® PR-UA before applying any levelling mortar or levelling compound.
A minimum curing time of two weeks should be observed for newly made mineral substrates, such as concrete, lime, cement-lime and cement renders.
Preparation:
The packaging contains a ready-to-use product. Do not dilute.
Application method:
Apply one or two coats of the product to the substrate using a brush, roller or spray. Where two coats are required, apply using the wet-on-wet method.
Note: The primer should fully penetrate into the substrate without forming a sealed coating, so-called “film”, or runs on the surface.
Drying:
The drying time of the primer applied to the substrate before paint application is approximately 3 hours (+20 ° C and relative humidity 55 %).
After priming, enclosed areas should be properly ventilated.
Application conditions:
During application and drying, the air and substrate temperature should be above +5 °C.
Wash the tools with water immediately after finishing work.
| Property | High quality silicon renders in the U.K.
(manual application) |
Terrix® polymer-silicate | |
|---|---|---|---|
| 1 | Render 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
Terrix PL-SX Spray Plaster
Terrix PL-SX Spray Plaster Ready-to-use plaster coat for machine levelling of interior walls and ceilings. ⋅ Chemically bonded product ⋅ No risk of cracking or flaking ⋅ Chemical accelerated set
Polymer-silicate premium paint from Terrix at NEW VICTORIA project by VINCI Construction
Terrix® paint range offers unique properties not available from other paints on the market. Based on innovative Swiss technology combining silicate and dispersive binding agents. https://terrix.co.uk/wp-content/uploads/2024/12/Terrix-Mac-Vic-V-Small-File-Size.mp4 How is it
Terrix Repair and Crack Restoration Systems
Terrix Repair and Crack Restoration Systems Terrix® systems offer a uniquely chemical-bonded product: - flame retardancy - no delamination - no cracking or peeling - natural algae resistance -
Regeneration project for Conway Council, in a conservation area
Solution The right system needed to be used. Hence the Terrix system using Eps insulation with the Terrix Polymer-Silicate renders is the perfect choice. The renders, based on Silicate,
