Is it possible to build a cellar from foam blocks?

Constructing a cellar is a useful way to give your house more storage space. Anything from wine and canned goods to tools and seasonal stuff can be kept in there for storage. Selecting the appropriate building material is one of the most important choices in cellar construction. Foam blocks are becoming a more popular and practical choice. But are they appropriate for constructing a cellar?

Aerated concrete blocks, sometimes referred to as foam blocks, are lightweight, manageable, and have good insulating qualities. They are formed of cement, lime, water, and an agent that expands the material to release trapped air bubbles. Their structure not only reduces their weight but also offers thermal insulation, which makes them a desirable option for a variety of construction projects.

But building a cellar has unique difficulties that must be carefully considered. The substance that is utilized needs to be strong enough to support the weight of the surrounding soil and resistant to moisture. Although foam blocks offer a number of benefits, it’s crucial to determine whether they can withstand the conditions of a cellar. The benefits and drawbacks of utilizing foam blocks to construct a cellar will be discussed in this article, along with aspects like construction ease, durability, and resistance to moisture.

Not only is it feasible to build a cellar using foam blocks, but it also has many benefits, such as superior insulation, affordability, and simplicity of construction. Because they are lightweight and easily handled, foam blocks offer excellent thermal insulation that contributes to the cellar’s constant temperature. To guarantee longevity and avoid moisture problems, however, appropriate waterproofing and structural reinforcement must be taken into account. Foam blocks can be a dependable and effective building material for a long-lasting and useful cellar if the proper safety measures are taken.

Why foam blocks may not be suitable

You must realize that because the basement walls are actually a part of the foundation, they must be able to support an increased load. Professional builders advise against using cellular concrete in basement construction for a number of reasons.

• Based on the technical characteristics, foam blocks can be more likely to be classified as insulating materials (they were originally created for these purposes) than as those that are suitable for fundamental type structures.
• Blocks made of cellular concrete may not withstand floor slabs, even if we are talking about a one-story house with a basement. What can we say if you plan to build a multi-story building?. Although manufacturers claim that if you lay out the floors from foam blocks, even this is not always possible.
• The most reliable foundation is made by pouring concrete and must be reinforced. Either bricks or reinforced concrete blocks are laid out. These materials have much better characteristics.

Practical! The blocks with through holes are the exception. They let you pour concrete inside of them and install reinforcement. Such constructions are permissible, although in this instance the foam blocks serve more as formwork than as the main structure. In addition, the construction will be considerably more difficult due to the need for additional specialized equipment.

• Due to their porous structure, foam blocks absorb moisture well. The basement is a damp room. Even if it is made of concrete, there is always a risk of condensation, mold and other "surprises". Changes in temperature, increased levels of groundwater passage – all these are factors that indicate that cellular concrete is not the best choice for a basement.

When foam blocks are applicable

Not everything appears to be as depressing as it first appears. First, if the basement walls do not support the weight of the entire building, foam blocks may be utilized. For instance, when the basement’s dimensions do not correspond with the house’s walls.

It is also worthwhile to take other subtleties and the future building’s technical features into account. Foam blocks can be used as a filler for reinforced concrete frame structures, despite their relatively low load-bearing capacity compared to other materials. Here, you can cut the construction costs a little bit without sacrificing quality.

Practical! Not every foam block works well for this kind of construction. Selecting D800 brand products is worthwhile.

However, these materials still have one benefit. The basement won’t need to be finished further because foam blocks, which were designed for insulation, have a very low heat transfer coefficient.

In the event that we are discussing a separate cellar, foam blocks have no unique "claims." It would make sense to use a more affordable and manageable building material because this is a non-residential structure. You still need to make some requirements clear, though.

Features of building a cellar from foam blocks

If you decide to arrange a small basement or cellar next to the house, then you must take into account the following:

• You cannot heavily load the foundation made of such blocks. This means that there should be no superstructures above the cellar.
• Overlaps are made exclusively of a beam type.
• If the groundwater is too high (above half a meter to ground level), then it is better to completely abandon the construction of foam blocks. But even if there is no strong humidity, high-quality waterproofing of the walls must be carried out without fail, which will protect against atmospheric phenomena.
• A ventilation system must be installed in the room. Block buildings of this type must be constantly kept clean and dry.
• It is necessary to clarify how much the soil freezes. If you live in a region with very cold winters, this will have a devastating effect on cellular concrete.
• The seams between the blocks must be sealed with specialized mixtures that prevent moisture from getting in.

Lightweight blocks can only be used in this situation to construct a cellar and basement, provided all other requirements are satisfied.

Stages of construction from foam blocks

• Determine the location for the future building. It is recommended to build a cellar from foam blocks as close as possible to a residential building. In this case, it is better to carry out the work in the spring-summer period, when much precipitation is not expected. The territory is cleared, all debris is removed. Additionally, the site is filled with soil to create an elevation.

Practical! It is preferable to have the cellar’s roof match that of the house. The building will appear harmonious in this scenario.

• We dig a pit. The depth of the pit for the cellar is determined at your discretion. To the resulting size, you need to add 20 cm (they will go to the floor).
• Level the bottom of the pit and inspect it. If the ground is wet, then it is better to lay a waterproofing material (for example, polyethylene) and on top a layer of oily clay, which is pressed down with a wooden block.
• We prepare a standard cement mortar and fill the cellar. We level the material immediately after laying. We wait until the screed is completely dry.
• We build the foundation. For this, we use foam blocks, which are laid using cement mortar. Usually, laying is carried out in a circular manner. This will allow you to quickly correct errors, if any.
• We erect walls. Particular attention should be paid to the corners.

• We plaster the walls and install doors.
• When the plaster is completely dry, we move on to the ceiling. It is installed on wooden logs. At this stage, there should be no problems, since the building is very deep. The logs are attached to the upper edge of the wall using screws and special anchors. Additionally, we fix them with corners. After this, we lay the transverse logs. For this, screws are usually used.

Following this, waterproofing and roofing felt are applied to the entire structure.

For many homeowners, constructing a cellar out of foam blocks can be a cost-effective and useful option. Because of their insulating qualities and light weight, foam blocks simplify and lower the cost of building. Because of their superior thermal insulation, the cellar maintains a constant temperature all year long, making it perfect for storing food and drinks.

There are, nevertheless, a few crucial things to remember. Because foam blocks are not as strong as conventional concrete or masonry, additional structural support may be required, particularly in regions with unstable soil or high moisture content. In order to keep the cellar dry and prevent water damage, proper drainage and waterproofing techniques are essential.

Even though foam blocks have many advantages, your cellar project’s suitability for them will ultimately depend on the particular site’s characteristics and your building specifications. The best method for building a sturdy and useful cellar can be determined by speaking with a qualified builder or engineer. An investment in your home can be made with a foam block cellar if you plan ahead and use the proper materials.

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