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).
Cold Roofs. A cold roof is where all of the insulation is placed either between and under or completely under the joists or deck. No insulation is on top. In this way the roof itself is kept cold.You only need ventilation in a cold roof. Cold roofs, by the way, are not recommended for high humidity areas â see the blog on âHow to insulate roofs of swimming pools, saunas and high humidity areasâ. had not known the difference between a warm roof and cold roof, until reading your blog. Thanks for the information though, it is always wiser to consult experts like you before we decide to ventilate flat roofs. Also serves as a good post for the maintenance of roofing in different houses with varying climates.