[0001] The invention relates to a method of insulating a wall, in particular of a facade
made of brickwork, concrete or the like mineral material, there being applied on the
wall an insulating layer and on the insulating layer a top or finishing layer.
[0002] According to a prior art method of thus manufacturing a facade insulation, there
is first applied on the facade, after cleaning same, an insulating layer by means
of an adhesive layer, said insulating layer being mostly in the form of a foam sheet,
while subsequently on the foam layer there is glued a glass fibre mat whereon again
there is applied the water-repellent finishing layer, e.g. an ornamental plaster layer.
[0003] This prior art method has a number of drawbacks, such as the fact that the application
of the foam layer requires a proper cleaning and smoothing of the facade, that three
glueing operations have to be carried out and furthermore that this time-consuming
method can only be executed by skilled personnel. The final result of the prior art
method also has drawbacks. The foam insulation layer as a matter of fact is vapour-inhibiting,
so that between the facade and the foam layer vapour bubbles may be produced. the
foam layer is relatively soft and consequently the facade is mechanically vulnerable.
Furthermore, use is made in the prior art method of various materials strongly deviating
as regards physical properties, while also the use of foam sheets sometimes entails
the risk of fire through released vapours, while the life seems limited in view of
the employed materials. Moreover, repairs are complicated.
[0004] It is the object of the invention to avoid these drawbacks.
[0005] To this effect according to the invention, in a method as described in the above,
an anchoring is secured to the wall which is embedded, through direct spraying of
mortar against the wall, in a concrete layer forming the insulating layer.
[0006] It will be clear that a substantial gain of time is achieved with the method according
to the invention as compared with the prior art technique, so that by this mere fact
the method of the invention is already less expensive.
[0007] The simple anchoring for such a concrete layer, which itself has already some adhesion,
even on uncleaned facade surfaces, can be simply formed according to the invention
by a number of anchors applied in the facade wall with a free end projecting from
the wall, said free end being embedded in the concrete layer. Such anchors have a.
given elasticity which limit the chance of crack formation upon relative movements
of facade wall and insulating concrete layer.
[0008] For increasing the adhesion between the insulating concrete layer and the anchors,
according to the invention, the free ends of the anchors can be interconnected by
threads which are likewise embedded in the insulating concrete layer.
[0009] The invention also concerns an insulated wall provided with a concrete layer directly
applied thereon, with an anchoring embedded therein and attached to the wall, and
a top layer disposed on the insulating concrete layer.
[0010] The use of concrete instead of foam plastic for forming an insulating layer has the
advantage that concrete is vapour-transmissive by nature, so respiratory, so that
the formation of vapour bubbles between facade and insulating layer is prevented.
Moreover, concrete is a material that as regards mechanical properties, such as coefficient
of expansion, is much closer to the normal facade material, brickwork or likewise
concrete, so that mutual dilatation differences are minimized. Concrete, moreover,
is mechanically more resistant than foam plastic, so that the chance of damage to
a wall insulated in accordance with the invention is less than the insulated facade
walls manufactured according to the prior art techniques.Since concrete can be sprayed,
the facade need not be smoothed and as already mentioned in the foregoing, an elaborate
previous facade cleaning is not necessary. Everything considered, the facade insulation
manufactured in accordance with the invention is not only less expensive than the
prior art insulated fagades, in that the application can be effected quicker and with
less skilled personnel, but moreover the properties, both the mechanical properties
and the insulating properties, are better than those of facade insulations made in
a known manner.
[0011] One embodiment of the facade insulation according to the invention will now be described,
by way of example, with reference to the accompanying drawing.
[0012] As shown on the drawing, depicting a detail of a facade insulated according to the
invention, there is sprayed directly against the facade wall 1, e.g. a one- brick
masonry wall, a concrete layer 2, while previously a plurality of anchors 3 has been
attached in the wall 1, projecting with their free ends from the wall 1. The free
anchor ends are interconnected by an anchoring thread 4, e.g. a glass fibre or nylon
fibre.
[0013] The ends of the anchors 3 projecting from the wall 1 and the anchoring threads stretched
therebetween are entirely embedded in the sprayed concrete layer 2. Finally, a top
or finishing layer 6 can be applied directly on the concrete layer 2.
1. A method of insulating a wall, in particular a facade made of brickwork, concrete
or the like mineral material, in which an insulating layer is applied on the wall
and on the insulating layer a top or finishing layer, characterized in that there
is attached to the wall an anchoring which, through direct spraying of mortar against
the wall, is embedded in a concrete layer forming the insulating layer.
2. A method according to claim 1, characterized in that the anchoring for the insulating
concrete layer is formed by a plurality of anchors which are applied in the wall and
having a free end projecting from the wall, which free end is embedded in the concrete
layer.
3. A method according to claim 2, characterized in that the free ends of the anchors
are interconnected by threads which likewise are embedded in the insulating concrete
layer.
4. An insulated wall provided with a concrete layer directly applied thereon with
an anchoring embedded therein and attached to the wall and a top layer applied on
the insulating concrete layer.
5. An insulated facade made through application of the method according to any one
of claims 1-3.
