Mapei Primer G Synthetic Resin-Based Water-Dispersion Primer With Very Low Volatile Organic Compound (VOC) 25KG

Description
• Primer G is a synthetic resin-based primer which, once applied to any surface, dries to form a flexible, compact, shiny coating which consolidates the surface, where needed. Primer G also improves the adhesion of smoothing compounds, paint, adhesive for wallpaper, adhesive for tiles, and mortar for renders.
• The film of Primer G on the surface of gypsum or cement, prevents any chemical reaction between sulphates and the cement alluminates of gypsum which, in the presence of moisture, leads to the formation of the salt “ettringite’’ which is the cause of the separation of the two elements.
• The use of Primer G when papering allows to reduce the substrate’s absorption and, as a result, the amount of glue used, thus making the wallpaper removal much easier.
• When used before applying sprayable plasters, Primer G prevents over-rapid absorption of water by the substrate, prolongs workability time, and helps prevent shrinkage cracks.
• When used before the application of self-levelling compounds, Primer G reduces the formation of air bubbles and helps prevent over-rapid drying making self-levelling easier.
• Primer G is not flammable and can therefore also be used in closed, unventilated environments without any precautions having to be taken.

​​​​​​​Features
• Versatile Application: Primer G can be used on a wide variety of surfaces, including concrete, screed, ceramic, and natural stone substrates.
• Improves Adhesion: It creates a bonding layer that enhances adhesion, especially for underlayments, self-leveling compounds, and tile adhesives.
• Prevents Overly Rapid Water Absorption: By controlling the porosity of substrates, Primer G prevents overly rapid water absorption, ensuring consistent drying times.
• Fast-Drying: The primer dries quickly, allowing you to apply leveling compounds or adhesives shortly after application.
• Low VOC Emissions: Being water-based, it has low volatile organic compound (VOC) emissions, which makes it more environmentally friendly and suitable for indoor use.
• Reduces Formation of Bubbles and Cracks: Helps prevent bubbles and micro-cracks in leveling compounds applied over absorbent substrates.
• Colour: light blue

Technical Data
PRODUCT IDENTITY
• Consistency: liquid
• Colour: light blue
• Density (g/cm³): 1.01
• pH: 8
• Dry solids content (%): 18
• GEV EMICODE (according to EN ISO 16000 - 3, 6, 9, 11 and CEN/TS 16516): EC1 Plus - very low emission
• Maximum VOC according to 2004/42/EC: 0 g/l
APPLICATION DATA (at +23°C - 50% R.H.)
• Application temperature range: from +5°C to +35°C
• Drying time before the application of the levelling compounds or adhesive:
- concrete: 30 min
- gypsum: 30-60 min

Where To Use
• For treating gypsum surfaces prior to fixing ceramic tiles.
• As an anchoring coat for gypsum-based sprayable plasters.
• To improve the adhesion of smoothing compounds on cementitious or anhydrite and gypsum-based surfaces.
• To provide uniform absorption in cementitious or gypsum surfaces.

Some application examples
• Preparing cement-based surfaces prior to smoothing with self-leveling or thixotropic smoothing compounds.
• Between layers of smoothing compounds once the first coat is perfectly dry.
• On gypsum plasters prior to smoothing with cementitious products.
• On anhydrite surfaces prior to applying cement-based products.
• On cementitious renders prior to smoothing with gypsum-based products.
• On gypsum walls as a fixative for wallpaper adhesives.
• Before installing ceramic tiles with cementitious adhesives on:
   - gypsum plasters and sprayed gypsum;
   - prefabricated gypsum panels;
   - fibrous-gypsum panels;
   - anhydrite screeds.
• Treating gypsum walls, chipboard, cement fiber boards, foamed concrete, renders, etc. prior to papering or painting.

Recommendations
• Primer G does not waterproof gypsum substrates even though it considerably reduces their porosity and absorption.
• Do not apply onto magnesium substrates.
• Primer G is not recommended for external applications or where rising damp is present. PRIMER G Synthetic resin-based water-dispersion primer with very low volatile organic compound (VOC)
• Do not apply Primer G in such a quantity that it forms a surface film; dilute with water as appropriate for the absorption of the substrate.
• Technical Data Sheet (TDS)

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Disclaimer

All product images shown are for illustration purposes only. Actual products may be varied in term of size, type, brand, version, colour, and other relevant characteristics.