Rustins small job primer and undercoat greywhite 250ml rustins sgpu250 this 250ml tin of primer and undercoat from rustins is for indoor and outdoor use used as a primer it is suitable for new and bare wood mdf plaster brickwork and cement it has high opacity and can be used as an undercoat on primed or painted surfaces this paint may be over coated with water or solvent based paints rustins sgpu250 small job primer amp undercoat grey 250ml