Highly recommend. I applied the Flag anti corrosive QD metal primer over a van floor which was in an awful state with lots of rusty patches all over, some large and some small. I prepped the floor first which was hard work with angle grinder sanding wheels, drill attached wire wheels, and just before the primer I also went over again with an orbital sander and very rough sandpaper. The primer need a BIG stir. It then goes on thick and seems to dry as you are applying it! It is very good. I also used xylanol with a clean towel over the whole floor and let dry before applying the flag. Final application was proteckakote UVR which goes on this primer very well. The chaps at New Venture products were also very helpful to me before I purchased... as i had no clue what I was doing! The end result is brilliant and I now wonder why it wa so daunting at first... but now it is done I highly recommend this combination of products.