Exam guru surgery shelfMay 13, 2021 · At the worst, using exterior paint products indoors can be hazardous to your health. At the least, the resins in exterior paint make it poorly suited for interior surfaces. Conversely, interior paint, when applied on exterior surfaces, will have a short lifespan. There was an error retrieving the chart from the server please try againA common issue with chalk paint is overloading the brush. Because the paint goes on easy and smooth, too many painters load up their brush with as much paint as they can and slap it on the piece. This might be a good way to avoid brush strokes, but it also creates paint drips that can be nearly impossible to remove.