(57) The invention relates to a fastening arrangement used in connection with multilayer
building units. The units (1a, 1b) comprise a core part (10) of thermal insulation
material and surface plates (11a, 12a; 11b, 12b) covering it on both sides, the surface
plates having a tongue (7) on one longitudinal edge and a groove (8) on the opposite
edge. The short sides (16) between the tongue-and-groove edges are straight, the building
units being intended to be joined with one another by means of a tongue-and-groove
joint to form a row of successive units and the said rows to be positioned adjacent
to one another in such a way that a joint seam (5) is formed between the rows, at
the point between the short straight sides of adjacent units (1a, 1b) positioned opposite
one another. The units are secured to the framework (13) at least at the short sides
by screws or similar fastening means. The arrangement comprises a first fastening
strip (20) which is mountable on the short side of the unit, in the edge area of the
unit, and can be secured in place in the framework (13) by screws or similar fastening
means (14), at the same time securing the first building unit (1a) underneath the
strip in place. The second fastening strip (21) which can be joined by one edge to
the first fastening strip (20) and extends across the joint seam (5) to the edge area
of the short side of the second adjacent building unit (1b) and can be secured in
place in the framework (13) by screws or similar fastening means (14), at the same
time securing the second building unit (1b) underneath the strip in place. On the
surface of each fastening strip (20, 21) to be placed against the outer surface of
the building unit is integrated a sealing means (22) which is placed against the said
outer surface.
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