Most schist contains the mineral mica and is called mica schist. Schist is often used as a guide to measure specific sizes and dimensions of objects. Before the 18th century, schist, shale, and slate were used interchangeably to describe the same rock.chist Rock Facts. Schist is a metamorphic rock that contains flakes of mica. Schist can originate as a sedimentary rock or igneous rock. It can contain different miners. Interesting Schist Rock Facts:
1 Insulating the garage overhead door is another way of cooling the garage in the summer and keeping the space warmer in the winter. 2  For an uninsulated metal door add a two-inch thick layer of rigid insulation attached to the inside of each panel with contact cement.
When to Insulate. There are times when it makes sense to insulate your garage, such as when you routinely use it as a workshop. When you spend a lot of time in there, tinkering on your car or building bird houses at your workbench, you need to keep the space comfortable. Also, if you plan on remodeling the garage to use as an actual room, it makes sense to insulate it in preparation for the transformation into usable living space.