Apex Ultima Protek is an exterior emulsion, it is highest category in asian paint's exterior products. If you are using Apex Ultima Protek then no need to apply primer as it comes with base coat and top coat combination so base coat is considered as primer. It comes with ten years of durability warranty and five years of waterproofing warranty. It has got super carbon di oxide diffusion resistence that prevent walls from corrosion. Apex Ultima Protek contains very less amount of VOC content (less than 100 gm/ltr). It gives rich sheen finish to walls. It is available in 1700+ shades.