Mr Robert from near Warsaw built a house in the 'highland' style. He used Toprock Super wool to insulate the attic. It is a common choice for insulating wooden ceilings, floors on joists or usable lofts in general.
Loft wool Rockwool TOPROCK SUPER 100mm, Warsaw, Poland
The thermal conductivity coefficient lambda λD is 0.037 W/mK and the density of this wool is 33 kg/m³. Stone wool boards for use on the exterior and interior of buildings for thermal, acoustic and fire insulation. Other available thicknesses in mm: 100, 150, 180, 200
Mineral wool for thermal insulation and insulation in usable and non-usable attics and lofts: above the rafters, between the rafters, under the rafters as well as suspended ceilings and knee walls (so-called dry construction).
Mineral wool for insulation and insulation of walls from the inside, construction of partition walls, pre-walls, partition walls and industrial pre-walls.
FRAME CONSTRUCTIONS, CEILINGS, FLOORS ON JOISTS
Mineral wool for insulation and insulation of: floors on a grid, industrial ceilings, ventilated flat roofs, floors on joists on a wooden or steel structure, suspended ceilings, external and internal walls of frame houses and wooden houses.