No, no, no, no, no. I cannot overstate this. Porch and floor paint contains everything the paint needs for durability built into it. And if you put a top coat on it, it is very likely to yellow, which is probably not the look you want. We had no issues with durability. We also painted and stenciled our wood kitchen floors with this same paint. It endured FAR more foot traffic and abuse than this laundry room floor and held up just as well without a top coat. Trust the product!