National Exterior spray plaster-Coarse is a pre-blended single component ready to use plaster for exterior/interior applications and is based on specially modified emulsion polymer. It does not contain any chloride admixtures. It can be over coated with Nationalthane, Acrylic rock top coat, Eggshell emulsion, Gloss emulsion etc., if required, more protection. It contains antifungal and antibacterial additives. RECOMMENDED USES It is used as a ready mixed plaster or to cover any holes, cracks, surface imperfections etc. on the concrete. It is mostly used for leveling the walls made with hollow concrete blocks. At normal conditions, it is necessary to have the primer coat on the surface and gives excellent bond to the concrete substrates. It can be used up to 5 mm thickness per coat to fill the voids or to level the surface imperfections. Always recommended as an under coat plaster.