FAST GRUNT-S a water glass based priming mortar for silicate plaster 6,4kg

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Vendor: FAST
Product code: GRUNT-S (pod tynki) 6,4kg


Primer for silicate plasters based on water glass





FAST GRUNT S-T is a ready to use, well covering, quartz particles priming expedition for silicate plasters. Thanks to its properties, it is essential for priming all concrete, ceramic, cement and lime surfaces. It can only be used outside the building. FAST GRUNT S-T is a component of the FAST S and FAST W thermal insulation system.


FAST GRUNT S-T for plasters is characterized by excellent adhesion, good coverage and high penetration capacity. It is water and frost resistant, vapour-permeable, reduces the absorbency of the urface and results in optimal adhesion of the topcoat. Resistant to alkalis. Supplied in a wide range of colours according to FAST COLOR SYSTEM.


A bucket - 6.4 kg

A bucket - 16 kg




Surface preparation

The surface should be even, strong and dry, free from all kinds of impurities that reduce the adhesion of the mortar, i.e. dust, lime, grease, remains of old paint coats. In case of weak, very absorbent or dropping surfaces, the surface should be primed with FAST GRUNT S paint diluent.




Preparation and use

On a previously prepared, primed and dry surface of FAST GRUNT S-T the plaster should be applied with a brush or a roller. It is allowed to dilute it with a small amount of water (max. up to 5%). Work should be carried out at a temperature of +8°C to +25°C. Plastering can start no earlier than 24 hours after the application of the mortar.




Technical data

Base unit: kg

Base: aqueous dispersion of potassium glass and acrylic resins

Use: after min. 24 hours

Substrate and ambient temperature: from +5 to +25 degrees Celsius.

VOC content: less than 30 g/l

Volume density: approximately 1,6 kg/dm3



Storage and comments

Store in tightly closed containers at temperatures from +5°C up to +25°C.

The recommended and stated in the card scope of application of the product or the method of application does not relieve the contractor from carrying out the work in accordance with the art of construction and health and safety rules.

P.W. FAST guarantees and is responsible for the quality of the product, but has no influence on the way it is used and the conditions under which it was used. All technical data were measured under normal conditions, i.e. +20°C and air humidity of 60%. In the case of conditions other than the above, the drying time may change, i.e. it may be longer or shorter.

This card replaces all previous versions.

Avoid direct contact with skin and protect eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Rinse contaminated skin immediately with plenty of water. Keep out of the reach of children.

This product complies with the European Technical Approval: ETA-14/0464 and ETA-14/0465 Certified according to ETA: 1020-CPR-020-032349 and 1020-CPR-020-032351 Current hygienic certificate. A component of ETICS FAST S and FAST W thermal insulation system.



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