Fast Spot Primer 414 is designed to spot prime a surface to seal exposed underlying primers and substrates where breakthrough areas have occurred during the final sanding process, prior to applying topcoat. Its swift drying time of 1 hour allows for repair jobs to proceed more quickly, while reducing application and wait times curbing expenses all around. Now you can spot prime and paint all in one day with a product designed specifically for the marine market. - Without requiring any accelerator additives, ALEXSEAL Fast Spot Primer 414 is approved for use on a variety of marine substrates including many plastics such as PVC and acrylic. Fast Spot Primer 414 is intended for use above the waterline only, and is not suitable