Pressed peat plates. Synonym: peat plates. They are made of top peat, containing at least 70 — 80% sphagnum (dry water moss) and at most 5-10%, foreign admixtures (roots and grasses), by subjecting it to a thermal treatment at a temperature of 150 ° C. Their disadvantage is high water absorption, tendency to fungus and low resistance to fire (they smolder without a flame) and bending. The thermal conductivity is 0.05-0.06. The peat industry produces: a) dry-pressed peat slabs from dried peat, containing, after additional drying, 30-40%, water; c. obj. - approx 0,3, b) wet-pressed peat slabs from moist peat, subjected to drying after pressing; c. obj. — 0,175—0,2. Peat plates are used only in dry places, when using protective expeditions as well as ceiling and wall insulation inserts. The Polish Carpentry Works provides for the use of pressed peat slabs: a) for thermal insulation of wooden barracks, on 1 a plate with dimensions of 1.25 x 2.9 m - 3,6 m2, b) for thermal insulation of wooden barracks, on 1 a slab with dimensions of 0.9X2.9 m – 2,2m2, c) for insulation of window panels, on 1 plate - 1,8 m2, d) for insulation of door leafs, on 1 plate - 0,8 m2.