Epoxy tends to run and drag very easily. Here are some tips to help you apply your epoxy on a verticle surface.
Turning Your Object or Surface
If possible, turn the object or surface you are coating horizontally so the epoxy can be applied lying down. Once the epoxy is cured, you can set your surface upright in the verticle position again.
Brushing Epoxy Onto A Verticle Surface
If you are unable to turn your surface horizontally, the best alternative is to apply light coats using a brush and continue building up the layers until you reach the thickness you desire.
Brushstrokes might be left behind when using this technique. By using a heat gun or a plumber's torch after applying the epoxy, you can thin the epoxy on the surface to remove these lines left from the brush. Be careful not to burn the epoxy using the heat gun or torch. We recommend practicing on a small test sample so you can test the effects of these tips.