Fastbuild Primer is a highly versatile alkyd based primer which can be used in a 1-pack or 2-pack mode with the addition of activator. With excellent anti-corrosive properties, it is highly recommended for use on blast cleaned steel substrates such as truck chassis, trailers, cement mixer bowls, etc. In 2 –pack mode it is also very good for priming over aged alkyd paint work that requires a 2-pack topcoat, but does not warrant complete paint removal. This flexibility makes it a suitable primer for general refurbishment work. For more information on blast cleaning recommendations please see the substrate preparation section in the PPG Delfleet manual.