SYSTEME D'ISOLATION MURAL

WALL INSULATION SYSTEM

Abrégé anglais

Abstract
In a channel specially designed to fasten semi-rigid mineral fibre in-
sulation to masonry walls, it is known to be constructed from 20 gauge galvanized
steel or other suitable material. The channel is designed to have pre-punched
holes along its length for fastening of the channel to the masonry wall. The top
portion of the channel is knurled to allow easy entry of the drywall screw. The
unique feature of the channel are the teeth running along its length which are
pressed into the surface of the butted together sections of the insulation providing
a strong grip between the two adjacent pieces of insulation. Of prime importance to
the success of this system is the recent technological advancements of the mineral
fibre itself which allows the teeth of the channel to engage the insulation fully
and hold without mechanical support rather than be repelled or pushed back by
the inherent nature of the insulation material. After the insulation is secured to
the masonry wall by concrete nail fastening systems, the drywall is screwed to the
channel.

Revendications

The embodiments of the invention in which exclusive property or privilege
is claimed are defined as follows:
1. A system of insulation consisting of sheets of semi-rigid or rigid
insulation boards and metal fastening channels, said channels have toothed
limb edges wherein the teeth are generally triangular shaped, said channels
further having a centrol portion including knurled portions to receive dry
wall screws, the strength and density of the insulation boards being such
that said channels may be easily and readily pressed into said insulation
boards without springback.
2. The system of insulation of claim I wherein said channels have
apertures to accommodate fasteners to facilitate fastening to a wall.
3. A system of insulation as in claim 1 wherein said channels are pressed
directly into said insulation boards without requiring the insulation boards
to be slotted or grooved to facilitate said pressing.

Description

SCHEDULE "A" I
. . _
There is disclosed a wall insulation system, and a
channel section for use in such a system.
t the present time, a common construction technique,
for completing the inside of a building, includes a layer of
insulation formed from individual insulation boards, and an
inner wall surface formed from dry wall panels. The insulation
boards are secured to masonry, by means of channel sections
In conventional constructions, the edges of the insulation
boards are provided with slots which are cut most of the way
through the board, and run parallel to an edge of the board.
With two insulation boards butted up against one another, this
enables U-shape channel members Jo engage the slots at the
edge of the boards. Nails are then driven through the channel
members, and between the edges of the boards, and into the
masonry to hold the insulation boards in position. Dry wall
panels can then be secured to the channel members, by dry wall
screws, and then completed in known manner. Also, in known
manner, a vapor barrier is usually provided. This construction
has many disadvantages. The provision of grooves or slots
along the edges of the insulation boards complicates the
production process, and increases the costs of producing them.
Further, it considerably weakens the insulation boards. During
transportation, handling and construction, it is quite easy for
the grooved edge portions to be damaged.
The present invention provided a system or assembly,
intended to overcome these disadvantages. It provides a wall
assembly, which comprises insulation boards assembled to form
a layer of insulation; Shape channel members, with sides of
the channel members formed as rows of teeth adapted to be
pressed into the insulation board; and fastening elements for
holding the channel sections in position, securing insulation
boards to a wall structure. There is also provided a U-shape
channel member having a central portion, and extending parallel
to one another and generally parallel to the central portion two
side limbs, with each side limb formed as a row of teeth adapted
to engage an insulation board.
It has been realized that insulation boards are of a
relatively low density, and low structural strength. It is for
this reason that it is undesirable to provide unnecessary cuts,
s ohs eta in them, as it unnecessarily weakens them, resulting
in damage during assembly etc. Since the insulation boards are
I

AL
of this nature, it has been realized that the provision of
rows of teeth along the sides of the channel members will
enable the channel members to engage and secure the insulation
boards in position. In this context, it is to be appreciated
that the reference to "teeth" covers any series of projections
or the like, which are capable of penetrating the insulation
boards to secure them, without excessive force being required,
and without causing excessive damage to the insulation boards.
Further, by simply providing a row of teeth along
each side of the channel member, there is no necessity to
precut the insulation boards. Once the channel members are
in position, there can still be portions of the insulation
board having the full thickness of the board extending between
the main body of the board and the portion beneath the channel.
As a consequence, the board is not weakened nearly so much as
compared to conventional precut insulation boards.
By way of example, an embodiment of the invention is
shown in the accompanying drawing , in which:
Figure 1 shows a perspective view of part of a
channel member; and
Figure 2 shows a perspective view of part of a
wall formed including the present invention.
In the drawing , a U-shape channel member is generally
denoted by the reference 1. As shown most clearly in figure
1, the channel member 1 has a central portion 4 and two side
limbs 6.
The central portion 4 comprises a central strip 8
and stepped slightly away from the central strip 8, and coplanar
with one another are two side strips 10. The central strip 8
is knurled, to receive dry wall screws. It is also pre-punched,
as indicated at 12, for nails which serve as fastening elements.
The side limbs 6 are each formed as a row of teeth 14.
Each tooth 14 is generally triangular, an correspondingly
shaped triangular spaces 16 are formed between the teeth 14.
These space 16 extend almost as far as the bottom of the side
limb, as indicated at 18. It is to be appreciated that the
number, shape and spacing of the teeth 14 can be varied,
dependent upon the materials used, etc. In particular, it may
prove sufficient to provide only a few teeth with large spaces
in between, there simply being sufficient teeth to hold the
insulation boards in place.

- 3 - to
The U-shape channel member 1 can be formed from
a number of different materials by various techniques, but
in this embodiment it is made from 20 gauge galvanized steel.
Referring to Figure 2, there is shown a wall
construction having a masonry layer or wall 20. Secured to
the masonry 20 are insulation boards 22. As shown, the
channel members 1 provided engaging abutting, vertical side
edges of the insulation boards 22. The insulation boards 22
are of a low density, low strength material, so that it is a
simple matter to press the U-shape channel members 1 into them.
After the channel members 1 are pressed into position, then
nails 24 are driven through the holes 12 into the masonry 20,
to secure the insulation boards 22 into position. To finish
the wall assembly, dry wall panels 26 are lazed over the
insulation boards 22, the dry wall panels 26 being of
corresponding dimensions. Then, in known manner, screws 28
are used to secure the dry wall panels 26 to the knurled
central strip 8 of the channel members 1. The gnarling
assists in guiding the screws, and preventing them from slipping
to one side. The dry wall can be finished in known manner.
Also, although not described, a vapor barrier can be provided
in known manner.