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SREP Facade Primer


Product description:
Primer for mineral surfaces

Product properties and use:
Unpigmented primer with good penetration abilities. To be used on absorbent surfaces before treatment with SREP Facade.
The primer is water-resistant and substrate reinforcing.

Technical data

Water-dilutable polysiloxane emulsion


Packaging sizes:
10 l and 25 l

1 kg/l

Dry content:
6 vol %


Penetration depth:
2 – 18 mm depending on substrate

Spreading rate:
8 – 10 m2/l depending on substrate

The practical spreading rate depends on application method, form and surface of the material.

The surface must be clean, dry, and sustainable. Dirty surfaces are treated with Iso A-Clean according to instructions.
Only apply on newly rendered facades, when 4 weeks have passed since the rendering.


To be used undiluted

Application temperature:
The temperature must be between 8° C and 30° C and 85 % RH.

Application method:
Brush, roller, or sprayer

Dry, absorbent surfaces such as mineral render, mortar washed surfaces, and sand-lime bricks are primed uniformly. Very absorbent surfaces are treated one or several times, preferably wet in wet.

Primed surfaces must not appear glossy after curing.

Always make a test coat to ensure the compatibility of product and surface.

Please note: Do not apply in direct sunlight

SREP Facade Primer must be coated with SREP Facade, subsequently.

Drying time:
Laboratory tests


 20 °C / 65 % RH 

Touch dry

4 - 6 hours


12 hours

Fully cured

6 days

20° C / 65 % RH
Touch dry, after 4 - 6 hours
Recoatable, after 12 hours
Fully cured 6 days

Cleaning of equipment:
Water and soap

Cool, protected from frost, in tightly closed packaging, and out of reach of children

No spillage into drains, to be disposed of at the local recycling centre

VOC: Max. 30 g/l (Kat. A/g)

ISO Silicone Facade-Primer






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