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 intumescent paint called FIREBLOCK® 2010 with recoat time as specified in the relative technical data sheet. The dry film thicknesses and quantities of FIREBLOCK® 2010 to apply are established by the Engineering’s office: they are in function of the fire resistance class required and the technical data, relating to the profiles to paint, contained in the report of calculation and in the drawings. 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/msup>2 equivalent to a dry film thickness of approximately 60 micron.