Schist 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:Schist and slate are very similar in that they are made from the same rock types except schist is subjected to more heat and pressure.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:
There are three types of insulation solution if you have a flat roof: 1  Warm deck or warm roof refers to a situation where the 'deck' of the roof, which is usually made of wood, is below the insulation. 2  Cold deck or cold roof is where the insulation is below the roof deck (and the associated joists).
Atlas Roofing offers nailable polyiso roof insulation with OSB or plywood facing. OSB has a more consistent density. While a sheet of plywood might be 5 to 7 plies thick, a sheet of OSB is made from as many as 50 strand layers packed and compressed into the same thickness. There are no weak spots that can be found in plywood when knotholes in plies overlap each other.