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).
1 Materials Used: EPDM and Single ply roofs are cheaper materials that will not last as long. 2  Higher quality roofing such as polyurethane foam may cost a bit more, but it will insulate and last the life of the building. 3  In contrast, a roof, such as Tar & Gravel, with insulation will cost about the same as an SPF roof. Higher quality roofing such as polyurethane foam may cost a bit more, but it will insulate and last the life of the building. 2  In contrast, a roof, such as Tar & Gravel, with insulation will cost about the same as an SPF roof.