Good afternoon What product is suitable for spray painting fire curtains ( in black ) ?
We have no specific experience or test data for this application but our best recommendation would be to apply 2 thinned coats of Thermoguard Wallcoat Smoke & Flame Retardant Topcoat Matt in the colour of your choice. We are assuming the curtain is made of a heavy absorbent material and would advise a small test area is carried out first before applying to the whole area.