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:
Wet insulation is inefficient â but more immediately, it can be a hidden risk. When a roof leak leads to saturated insulation, that insulation almost always needs to be replaced. Wet Insulation Is Bad for Your Roof, Your Building, and its Occupants. Insulation sits just below the roofâs membrane. When a leak allows water to seep in through the outer membrane and saturate the insulation below, that moisture can deteriorate the roof on multiple fronts.
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.