[0001] The invention relates to a process for fitting a false ceiling below the upper supporting
structure in a room bounded by walls.
[0002] It is desirable particularly when renovating relatively old houses to fit false ceilings
in the rooms in these houses below the upper supporting structure, mainly to achieve
improved sound insulation.
[0003] Such false ceilings were hitherto suspended from the upper supporting structure by
means of hangers. Since the hangers here are fastened directly to the upper supporting
structure, said hangers form sound bridges, consequently adversely affecting the sound-insulating
effect of the false ceiling.
[0004] The object of the invention is to produce a process of the above-mentioned type,
according to which a false ceiling with excellent sound-insulating properties can
be obtained.
[0005] This object is achieved through the fact that in the process according to the invention
supporting members are fitted on two opposite walls of the room a distance below the
upper supporting structure, and a number of parallel, self-supporting, essentially
beam-shaped parts spaced apart are connected by their ends to said supporting members,
following which ceiling panels are fitted to said beam-shaped parts near the bottom
sides thereof.
[0006] In this way the false ceiling obtained has no mechanical connection at all with the
upper supporting structure, so that the sound-insulating effect of the ceiling is
optimum.
[0007] In an advantageous manner the self-supporting beam-shaped parts are formed by sectional
beams, for example made of steel, each having a web and at least one flange perpendicular
thereto, these sectional beams being placed with their ends with the flanges resting
freely on the supporting members, so that the web of each sectional beam hangs down
past the supporting members, while the end parts of the web are accommodated in a
space within or between the supporting members.
[0008] The sectional beams placed in this way can then expand or contract freely as a result
of temperature fluctuations.
[0009] The supporting members are preferably each formed by an edge batten fixed to the
wall in question and by a number of blocks which are fitted on the edge batten so
that they are permitted to slide in the lengthwise direction thereof, in such a way
that the sectional beams are placed with their flanges resting freely on the top sides
of the blocks and the above-mentioned end parts of the web are always accommodated
in the space between two adjacent blocks.
[0010] The sectional beams also preferably have an I section, so that these beams are fitted
with their top flanges resting on the supporting members, the ceiling panels being
provided at at least two parallel edge faces with a groove made therein and said panels
being fixed at the bottom ends of the sectional beams by making the said groove grip
the bottom flanges of the I sections.
[0011] The edge battens here advantageously have at their top sides an upward-projecting
nose which in the fitted position lies away from the wall in question, and the blocks
are provided at their top sides with a laterally projecting, downward-directed hook-shaped
part which grips the nose.
[0012] In this way a false ceiling with excellent sound-insulating properties can be fitted
in a very simple manner.
[0013] It is preferable to fit a layer of an insulating material in the space between the
ceiling panels and the top sides of the beam-shaped members, thereby improving the
insulating properties of the ceiling.
[0014] Finally, edging boards can be fitted along the sides of the ceiling panels facing
the walls, against the bottom sides of the ceiling panels and connecting to the walls.
[0015] The invention is explained in greater detail with reference to the drawing, in which:
Fig. 1 shows in cross section an end part of a false ceiling obtained according to
the process of the invention;
Fig. 2 shows a cross section along the line II-II in Fig. 1; and
Fig. 3 shows in perspective an end part of a ceiling obtained according to the invention.
[0016] As shown in the drawing, an edge batten 1 is fixed to a wall 3 of a room at a distance
below the upper supporting structure 2. The edge batten 1 is provided with a nose
1′ which is gripped by the hook-shaped parts 4′ of a number of blocks 4. An edge batten
1 and blocks 4 are fitted in the same way, but in mirror image, on the wall (not shown)
of the room opposite the wall 3.
[0017] The blocks 4 support a number of parallel I sections 5 which rest with the end parts
of their upper flanges 5′ freely on the blocks 4, and the end parts of the web 5˝
of each I section 5 are accommodated in the space between two adjacent blocks 4.
[0018] The ceiling panels 6 are provided at their side edges with grooves 7 which on either
side of the web 5˝ of each I section 5 grip the bottom flange 5‴ thereof.
[0019] A layer 8 of an insulating material, for example glass wool, is also placed on the
ceiling panels, with an aluminium sheet 9 between them. The seams between the ceiling
panels 6 and the walls 3 are filled up with a filling material 10, after which an
edging board 11 is finally fitted against the bottom sides of the ceiling panels.
[0020] The ceiling panels 6 are preferably made of two plaster slabs 6′ and a layer of cardboard
6˝ connected to the plaster slabs 6′ between them, the latter layer being of such
dimensions that the grooves remain open.
1. Process for fitting a false ceiling below the upper supporting structure in a
room bounded by walls, characterized in that supporting members are fitted on two
opposite walls of the room a distance below the upper supporting structure and a number
of parallel, self-supporting, essentially beam-shaped parts spaced apart are connected
by their ends to said supporting members, following which ceiling panels are fitted
to said beam-shaped parts near the bottom sides thereof.
2. Process according to Claim 1, characterized in that the self-supporting beam-shaped
parts are formed by sectional beams, for example made of steel, each having a web
and at least one flange perpendicular thereto, and these sectional beams are connected
to the supporting members by being placed with their ends with the flanges resting
freely on the supporting members, so that the web of each sectional beam hangs down
past the supporting members, while the end parts of the web are accommodated in a
space within or between the supporting members.
3. Process according to Claim 2, characterized in that the supporting members are
each formed by an edge batten fixed to the wall in question and by a number of blocks
which are fitted on the edge batten so that they are permitted to slide in the lengthwise
direction thereof, in such a way that the sectional beams are placed with their flanges
resting freely on the top sides of the blocks and the above-mentioned end parts of
the web are always accommodated in the space between two adjacent blocks.
4. Process according to Claims 2 or 3, characterized in that the sectional beams have
an I section, and these beams are fitted with their top flanges resting on the supporting
members, the ceiling panels being provided at at least two parallel edge faces with
a groove made therein, and said panels being fixed at the bottom ends of the sectional
beams by making the said grooves grip the bottom flanges of the I sections.
5. Process according to Claim 3 or 4, characterized in that the edge battens have
at their top sides an upward-projecting nose which in the fitted position lies away
from the wall in question, and the blocks are provided at their top sides with a laterally
projecting, downward-directed hook-shaped part which grips the nose.
6. Process according to Claims 1-5, characterized in that a layer of an insulating
material is fitted between the ceiling panels and the top sides of the beam-shaped
parts.
7. Process according to Claims 1-6, characterized in that edging boards are fitted
along the sides of the ceiling panels facing the walls, against the bottom sides of
said panels and connecting to the walls.