This issue is usually a sign that the epoxy has not fully cured. Please use caution when placing heavy or hot objects onto the surface. Prematurely placing objects on the surface will result in mark, rings, or indents. If a hot object is placed on the surface, the epoxy will burn or discolor. 

To prevent this from happening, make sure the epoxy is fully cured before putting the object onto your surface. The epoxy will be 99% cured after the first 72 Hours. 

To achieve a 100% cure, please allow the product to cure for at least two months. During this time, the surface can be used but, we recommend using coasters and pot holders to protect the surface from scratches and blemishes while the epoxy has time to cure fully. 

The peak resistance after 100% curing is about 135 degrees Fahrenheit which means that you can put hot cups of coffee, bowls, and plates on it. Never put a hot pan directly onto the epoxy. You will want to use pot holders or placemats. This is standard for all epoxies.

Note: These cure times are estimates and could vary depending on humidity and temperature of your environment. For our calculations, we always recommend keeping the product and surface at 80 Degrees Farenhieght.