IS Eternit Primer

IS Eternit Primer

Product description

Eternit Primer is a water dilutable primer for fibre cement roofs, especially suitable for rather old, very absorbent roof plates. The primer penetrates into the fibre cement plate and ensures good adhesion of the topcoat, applied subsequently. Eternit Primer is used for fibre cement, fibre cement slates, concrete. Eternit Primer always has to be coated with Isonit or Rubber, subsequently. Rubber is especially recommended for degraded primed fibre cement plates. Not usable on clay tiles and natural slate.


Standard colours: Black, anthracite grey dark, red brown, mocca and white.

Application details

The temperature must be between 8° C and 30° C and relative humidity <85 % RH.

Application method

Brush, roller or airless, nozzles 19 – 21, 180 - 220 bar. Always make a test coat to ensure the compatibility of product and surface.

Technical data

Gloss -

Spreading rate 4 - 8 m²/l

Drying time The drying time for wet layer thickness 200 µm 20° C / 65 % RH: Recoatable after 1 hour. The drying time depend on layer thickness, temperature, relative air humidity, and air circulation.

Pretreatment/cleaning The roof must be cleaned thoroughly using high-pressure and Iso A-Clean. The surface must be clean, dry and durable.

Environment Avoid spillage into drains, water systems and soil. Destroy liquid waste according to the local regulations. Recycle or dispose of empty, dry cans in accordance with local regulations. VOC: Max. 30 g/l (Kat. A/h)


Water-based. Good penetration abilities. Ensures good adhesion.

This product is available in the following standard colours:

Please note that the colours below are digital colours and, therefore, are intended as a guide only. If you are in doubt about a colour, we advise you to make a test coat of the colour concerned.

Black (20)


Anthracite grey dark (23)


Red brown (36)


Mocca (38)


White (-)