Volar Design states it requires a substructure before installs can occur. What does that mean?
Volar Design does free floating installs on countertops. That means the stone is not glued to the cabinets. This way, the install can take severe stress occurring through settling, floor movement, temperature changes, and contraction and expansion through change of seasons. Therefore, the countertops can take enormous stress without the risk of failing.
The substructure is usually a layer of ¾ inch cabinet grade plywood, which is screwed (not glued or stapled) on top of the cabinet or if necessary, inside the cabinet frame itself. If corbels are needed, they have to be installed against surfaces which are free of any flex and bending.