The cinder block is a essential building element, whether to erect the walls of professional buildings, apartment buildings for residential use, individual houses or even perimeter walls to enclose a property. It is therefore omnipresent and constitutes nearly 8 out of 10 constructions. traditional breeze block which has more advantages than disadvantages, on the new generation of insulating concrete blocks, and on the price to be expected before finalizing your construction project.
Concrete block: its main characteristics
Manufactured concrete block massively produced since the 1950s, cinder block, also commonly known asagglomeration (for chipboard) is still widely used today. Rectangular in shape and generally with a 5/22 ratio, it is available in different sizes. This building material is hollow. It is used to mount walls and partitions.
Concrete blocks are most often laid on a bed of mortar. But there is another technique which consists in applying a bed of glue with a roller on which the rows of concrete blocks are then placed.
Concrete block: its advantages
If the concrete block is used so much in construction, and still stands out today compared to other materials of excellent quality, it is because it has many advantages, including:
- Great ease of break,
- Very high resistance:
- inclement weather including wind storms,
- to seismic movements.
- A very reasonable price.
Thus, a building constructed from traditional breeze blocks can be erected quickly. You must still have a sufficient experience to build a house or premises for professional use. But the cinder block used in the rules of the art allows to benefit from a building little exposed to the risks of combustion, of a great longevity, and without it being necessary for all that to spend a fortune.
Concrete block: its disadvantages
It is undeniable that the concrete block enjoys a very good reputation, but it nevertheless presents some weak points. These include:
- Its poor quality of insulation, whether thermally or acoustically,
- Its incompatibility with an original architecture due to its great rigidity,
- The difficulty it imposes when installing the plumbing and all the pipes connected to the heating system, which also increases the cost of construction.
It is in fact almost impossible with concrete block to obtain certain architectural effects and, when you build your house with concrete blocks, you encounter more difficulties when the time comes to integrate certain network installations into this type of structure ( pipes, etc.). It is noted that this last point requires an additional budget due to the technicality that this requires in a concrete block construction.
What about the insulating concrete block?
This new generation of concrete blocks completes the range of construction materials. It is a material all in one which does not fail to interest individuals and professionals who plan to build a house or commercial or industrial premises for example. Already widely used in North America, the insulating concrete block is beginning to be known here.
It is used to build exterior walls and load-bearing walls. Its peculiarity, compared to a classic concrete block, lies in its cells, some of which incorporate an insulation. A few holes are of course kept so that the concrete can be poured during installation.
The insulating concrete block has a major advantage: it improves interior comfort because it limits thermal bridges which generate a large expenditure of energy. The insulation that it incorporates can be in particular:
- Expanded polystyrene,
- An insulating foam made from concrete,
- Wood associated with a mineral binder,
- Rock wool, particularly recommended in areas where rodents swarm because it resists their attacks,
- Glass wool perfectly resistant to insects including termites.
This new generation concrete block improves the inertia of the partitions but also thesealing. Easy to install, the insulating concrete blocks fit together. However, it is strongly recommended to entrust the work to an experienced professional capable of guaranteeing the perfect stability of the building. This material is ecological, it offers an interesting space saving if no other insulation is added since it reduces the footprint of the walls of a house or a room. We also appreciate its ease of installation, so that it allows you to erect walls quickly, provided that you have a good knowledge of the building rules.
It should be noted that in many areas, however, it is mainly used for complete the main insulation of a home. On its own, it does not meet the requirements of current thermal regulations, namely a Thermal Resistance between 4 and 4.40 while that of the insulating concrete block is only 2.
Concrete block: prices
Building your own concrete block house allows you to make significant savings, provided you know a minimum and have the ability not to count your time. But it is observed that even if we call in a professional, this cost all the same cheaper than if another building material is used. This difference is partly due to the fact that the concrete block poses no difficulty in laying. It therefore allows win time which has repercussions on the price of labor, and can therefore be appreciated on the overall cost of the work when we call on a pro.
The prices are obviously variables since they depend on the dimensions of the concrete blocks. For information, for an element 20 cm high and wide by 50 cm long, the price of concrete block is understood between 1 and 3 €, either between 10 and 30 € / m² since 10 blocks of this dimension are needed to cover such an area. Note that the same wall would require a much higher budget if it were built with insulating concrete blocks, the price of which per m² is between 60 and 80 €.
Coming back to our classic breeze block, his price per m² get along out of pose but the cost of cement, sand and water to prepare the mortar should also be taken into account. As an indication, the 40 kg bag of cement costs at least ten euros. Thus, for example, there are 550 traditional concrete blocks of 20 x 20 x 50 cm and 1 m3 of mortar for their assembly, which makes it possible to mount 55 m² of walls. But it will also add the cost of insulation.
However, it should be noted that a wall made of traditional breeze blocks on which care has been taken to install insulation costs in total less than a wall of insulating breeze blocks and offers better comfort. But in either case, you have to integrate a higher budget into your project if you want entrust construction work to a building professional (a mason in this case). Admittedly, the cost of the operation is higher, but we can thus benefit from all the guarantees, which is not the case when we manage on our own …
The concrete block prices generally observed are of the order from 50 to 60 € per square meter. This is just an idea. To know the exact price of this type of work, it is absolutely necessary to establish a quote by the craftsman of his choice. To do this, the ideal is to go through a masons comparator online. We can thus receive several proposals. It’s free and without any commitment.