Isonit Construction

Isonit Construction

Product description

Isonit Construction is a water dilutable, non-pigmented primer for worn, absorbent surfaces of fibre cement. Water-based. Good penetration abilities. Ensures good adhesion. Use: Fibre cement (worn, absorbent plates). Isonit Construction 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



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. Apply an appropriate amount, so that no film is created (glossy surface). If a film is created, the coating applied subsequently will not adhere well. Always make a test coat to ensure the compatibility of product and surface.

Technical data

Gloss -

Spreading rate 10 - 20 m²/l

Drying time The drying time for wet layer thickness 100 µm 20° C / 65 % RH: Recoatable ~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/g)


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