The application procedure provides for the following phases:
1) PREPARATION OF SURFACES
Sandblasting to minimum finish Sa 2 ½ (SSPC –SP10)
2) ANTICORROSIVE PRIMER
a) On steel or galvanised steel surfaces, it is recommended the application of our dual component epoxy pimer EPOXY PAINTRUST (A+B) in amount of 150 g/m2 equivalent to a dry film thickness of approximately 50 micron.
b) On steel surfaces, it is recommended the application of our one-component acrylic primer IDROSTAR in amount of 150 g/m2 equivalent to a dry film thickness of approximately 50 micron.
3) INTUMESCENT PAINT
Application of several coats of FIREBLOCK® 2010 intumescent paint with recoat time as specified in the relative technical data sheet; the quantity (kg/m2) to apply must be established according to the massivity and loading situations of the elements to protect and also in relation to the fire resistance required (R/REI 30/60/90). The film thickness of FIREBLOCK® 2010 to apply is calculated on the basis of experimental or analytical assessment by the Engineering’s office. The FIREBLOCK® 2010 can be applied by brush or roller in the amount of 500 g/m2 per coat, or by spraying in the amount of 700 g/m2 per coat (dispositive airless without filter with nozzle from 31).
It's important to take great care in the angled areas where the product tends to accumulate. Spray in this case at a distance of dispensing more high, reducing the scope of the gun.
When the FIREBLOCK® 2010 paint film is completely dry (after at least 2 days) the application procedure can be completed, if necessary, by applying our chlorinated rubber topcoat called STARGUM COLOR (semi-bright or bright version) designed to impart anti-weathering and water-resistant properties to the intumescent protection. The recommended quantity to apply in one coat is 150-200 g/m2 equivalent to a dry film thickness of approximately 60 micron.