MirrorCoat is a self-leveling bar and table-top coating. When using it to fill cracks and voids, it is limited in how deep you can pour the material without causing it to exotherm. The maximum depth we recommend with the MirrorCoat is 1/4" thick in room temperature conditions.
MirrorCast was designed specifically to fill medium to large sized cracks and voids, minimizing the need to pour multiple layers. Please see the MirrorCast Application Guide for detailed instructions on application. A 'Use Chart' is also provided in the guide to help determine maximum depth pours in relation to the size of the crack or void.