Isonit 12-20-50

Water-borne roof coating with high coverage.

  • New look and extended lifetime of the roof
  • Easy to use
  • Long lasting effect
  • 858
  • 4 m²/l
  • 6 m²/l
  • 2 h
  • 1 h


  • Semi-matt


Water-borne roof coating with high coverage.

Product Features

Isonit is a water-borne roof coating with excellent adhesion, high coverage and short drying time. Good flow and levelling properties. The coating creates a water-repellent surface that is diffusion-open, allowing water vapour coming from inside the material to pass through. Light-fast and weather-stable. Available in both tintable bases and factory ready made shades.

Recommended Uses

Isonit is used on concrete roof tiles and fibre cement and fibre cement slates (primed with Eternit Primer) or steel roofs (primed with Metal Primer WB). Isonit is not suitable for use on clay tiles or natural slate.


2 -3 m²/l (2 layers) The practical spreading rate depends on application method, form and surface of the material.



Application Method

spraying, brush, roller

Application Conditions

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

Surface preparation

Roofs to be painted should be thoroughly cleaned using high-pressure washer and Iso A-Clean.


First coat:

To ensure the optimum layer thickness, apply the paint in two layers. The first coat should be thinned with 20 %, by volume, with water and mixed thoroughly. The second coat should be applied without thinning. Allow sufficient drying time between applications. Always make a test coat to ensure the compatibility of the product and surface.

Maintenance Painting:

It is recommended to maintain coated roofs with a treatment with Iso A-Clean every second year – in order to keep the surface nice and clean.

Cleaning of tools

Clean tools with water and soap.

Maintenance Instructions

In order to keep the roof nice and clean it is recommended to clean roofs coated with Isonit with Iso A-Clean every other year.


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. 40 g/l (Kat. A/c)

New look and extended lifetime of the roof

Roof covered with Tikkurila Isonit gets a new look. Simultaneously the roof coating provides protection against rain, sleet, snow, sun and other factors thereby safeguards the roof for many years.

Product usp1prof_img
Master solution

Easy to use

Water-borne, high coverage, good flow and levelling properties.

Product usp2prof_img
Master solution

Long lasting effect

Creates a strong and water-repellent surface. Light-fast and weather-stable.

Product usp3prof_img
Master solution

You’re visiting Tikkurila website from United Kingdom. Would you like to visit the local UK site?

has been added to saved.
has been removed from saved.