Shop priming shall be applied immediately after cleaning the metal. Priming shall be applied in dry weather or under cover and metal surfaces including edges, joints, holes, corners, etc. shall receive primer and all surfaces which will be concealed after assembly shall be shop primed prior to assembly. All primers shall be used in accordance with the manufacturer's printed instructions and the use of any thinners, adulterants or admixtures
shall be only as stated in the Instructions. Priming shall be applied uniformly and completely over the metal surfaces. No work shall be delivered to the Site until the shop primed coat has thoroughly dried.