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Insulation from the inside with a bulkhead

To insulate a house from the inside, when the insulation from the outside is not possible or would require a financial investment too important, the process of insulation from the inside with a partition wall is an insulation solution hidden. The counter-partition, precisely, completely covering the insulation. A principle of isolation rather simple, but which still requires some know-how, especially in the assembly of the wall-partition itself. But let's focus on what defines this type of insulation the most.


Insulation with bulkhead, techniques and features:

To set up an insulation against bulkhead, the first thing to do is to think carefully about its project, choosing the type of insulation and the thickness of it depending on the thermal and sound performance you are looking for. The counter-partition is also a few centimeters, it goes without saying that like all insulation solutions from the inside, that of the against-partition encroaches part of the living space. All of which is to find the right compromise between available space and energy consumption.

Plaster bricks

In fact, the insulation is first applied against the inner face of the wall either by gluing or by fixing. It should then use a panel or semi-rigid insulation. Then comes the bulkhead that conceals and protect the insulation. The insulation should not be compressed, on the contrary, a 10 mm air gap must be arranged between the two. The choice of the type of partition is also important, it can also be designed in plaster brick, plaster tile or cellular concrete tile.

Advantages and disadvantages of interior insulation with a partition wall:

The insulation with against partition thus offers a great freedom, insulating materials, type of against-partition, total thickness of all, everything is to be defined according to your criteria. Another advantage of this method is the ability to circulate the electrical network and plumbing pipes internally without affecting its insulation performance.

On the other hand, as a result of insulating from the inside, the insulation against the bulkhead amounts to breaking the initial thermal inertia of the wall, which will be strongly felt in the summer. An unavoidable consequence, but lessened here by the limitation see the absence of punctual thermal bridges. The use of masonry walls providing airtightness sufficient. Hence a time and a level of implementation a little higher.

Choice of material to build the counter-partition of this insulation insulation:

Principle of partition wall insulation

As mentioned, the final bulkhead is a self-built masonry counterpart that can be made of plaster bricks, plaster tiles or cellular concrete tiles. Each of the three being as valid as the others while having its specificity. Plaster bricks have a good thermal inertia, the cellular concrete offers a surplus of acoustic comfort and plaster tiles provide a load resistance for fasteners greater than that of a plasterboard.

Regarding the insulation, if the one you selected is permeable to water vapor it will be necessary in this case to add a vapor barrier on the inside of the wall to counter the natural arrival of humidity that could lead to condensation and therefore to damage. The same goes for the design of the joints which must guarantee a tight seal at the junction points between the insulation elements and the walls.


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