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Modular houses

Insulated wood structure

Modular houses made of interlocking panels are one of the most ecological and viable options for those looking for a sustainable home. This construction method not only minimizes the impact on the environment, but also promotes a healthy indoor environment. For example, the paint applied to the wooden panels uses food dyes, thus substantially reducing the risk of negative impact on health.

  • Fast execution time

  • Much lower costs

  • They can be built in any season

  • They can be placed in any location, even in hard-to-reach areas

  • They can be constructed from a wide variety of materials

  • The materials used comply with the legislative regulations in force, being also environmentally friendly

  • It generates a low consumption of electricity

  • It generates a smaller amount of waste and, implicitly, lower costs for its disposal

What are these modular houses made of?

Self-supporting panels in interlocking system

The interlocking system panels are insulating self-supporting wooden panels, laminated sandwich type, consisting of a middle layer of extruded polystyrene (XPS), covered on both sides with wooden boards.

They are made through an industrialized process, using a technology composed of laminated wood panels, mounted in an innovative interlocking type system and insulated on the inside with extruded polystyrene. Also, the panels allow the assembly of the house to be carried out in a very short time, of just a few days, and the major advantage is the foundation system on pillars, which allows the house to be placed in any location.

The wall panels are made of two layers of solid wood, each with a thickness of 200 mm, they contain 200, 400 or 600 mm of extruded polystyrene inside.

The quality of self-supporting insulating panels in the interlocking system can be checked on the label that accompanies them. This label must contain extremely important information, such as:

  • Manufacturer’s name and address

  • The name of the product, followed by the number that symbolizes the mass per surface unit of the product and the brand

  • Dimensions (area, length, width)

  • Fields of use, storage and commissioning conditions

Details about wood and extruded polystyrene

The wood used for the panels in the interlocking system is solid wood, laminated, well dried and impregnated with paint.

The drying is done industrially in special ovens to obtain a total humidity control. After the drying process, the wood becomes much more resistant against pests, bacteria, mold or organisms.

Cleaning is another process that increases the life of the wood. This involves removing impurities, sanding the top layer and planing before impregnation. The result is a wood with a pleasant and natural appearance.

Impregnation is an essential stage in the treatment of wood to ensure its resistance against extremely dangerous elements:

  • against corrosion;
  • against rotting;
  • against insects;
  • against fungi;
  • against the weather conditions.

Laminated wood does not bend, rot, corrode, is not affected by weather conditions and does not develop cracks, ensuring a very long life for the structure.

The impregnation can be done either by spraying or by manually applying the paint to the entire surface of the wood. The paint used for plywood is antibacterial, does not contain heavy metals or other substances harmful to the body and contains food dyes. This can be chosen in 19 varieties

Extruded Polystyrene (XPS)

Thermal conductivity represents the amount of heat (expressed in watts) transferred through a square area of material, having a certain thickness (expressed in meters). A lower thermal conductivity indicates that the material has a greater capacity to resist heat transfer. Basically, a material with a low thermal conductivity acts as an efficient thermal insulator. Typical thermal conductivity values for extruded polystyrene are between 0.025 and 0.040 W/m·K.

In general, thermal insulation is primarily based on the very low thermal conductivity of gases. Gases have poor heat conduction properties compared to liquids and solids, which is why they are good materials for insulation when they can be enclosed in a foam-like structure. Air and other gases are generally good insulators. However, the main benefit is the absence of convection. Therefore, many insulating materials (such as extruded polystyrene) work simply by containing a large number of gas-filled pockets, which prevents large-scale convection.

Other technical details about XPS

  • It has a density between 28 and 45 kg/m3

  • It is composed of the same base material (crude oil) as EPS

  • The production process of XPS is similar to the production process of EPS

  • It is manufactured by continuous extrusion, which produces a homogeneous matrix of closed cells. Each cell is closed by polystyrene walls

  • Extrusion is done in sheets. Polystyrene is mixed with additives and with an expanding agent which is then melted by a dye

  • The blowing agent of XPS remains embedded in the material for years

  • It is very resistant to water vapor diffusion, which is why it is preferred over EPS when used in humid environments.

  • It has a higher compressive strength than EPS

2. Galvanized sheet roof, electrostatically painted

The roof covering the respective houses is made of galvanized sheet panels, electrostatically painted and containing insulating foam.

Painting in an electrostatic field is an important factor in terms of the resistance of sheet metal panels. This technique guarantees an impeccable coverage of sheet metal surfaces, giving them an extremely durable paint layer and a uniform color, without differences between painted surfaces in a horizontal or vertical position. The benefits of painting in an electrostatic field are extremely varied:

  • Paint does not accumulate on the sheet surface
  • No paint is wasted
  • It helps the surface to resist corrosion, chemical factors, heat, abrasion, ultra violet rays, physical impact or weather conditions

Painting in an electrostatic field involves dispersing a very fine powder (approximately 1-5 μm) in water, which ensures the application of an extremely thin and smooth film on the painted surface.

The painting process in the electrostatic field is done in several stages

Stage 1 – Pre-treatment of tin panels

The tin panels must be very clean to ensure a fast and efficient adhesion of the paint powder. The pretreatment is carried out by:

  • removing dirt, lubricants, oils, metal oxides or welding residues from the part;
  • chemical treatment, by using chromates and phosphates in immersion baths or by spraying. This treatment is carried out in several stages, which involves degreasing, chiselling, stain removal, rinsing and, finally, phosphating and chromating;

Stage 2 – Applying the paint to the surface of the panels

  • The most common method of applying the powder is to spray it with an electrostatic gun.
  • The gun gives the powder a positive electrical charge and then sprays it towards the grounded part with the help of a jet of compressed air.
  • The part is then heated, the powder melts, forming a uniform film, after which it is cooled, so that the paint layer hardens. The method of pre-heating the metal, after which the paint is sprayed, is also frequently encountered.

Stage 3 – Hardening of the paint

After application, the part is heated to melt the paint powder and form a uniform film. When the powder melts, the powder layer reacts chemically and forms a polymer with a higher molecular weight, in a network structure.

After melting, the paint is hardened, which takes place at a specific temperature (generally 200 degrees Celsius, for a period of 10 minutes). Hardening is carried out in convection ovens, infrared ovens or with the help of a laser, and the whole process can have a different duration, depending on the specifications of the powder product.

Covering the sheet with zinc, another essential step for a durable roof

Galvanized sheet (or galvanized) is a material often used for making roofs. When it is produced, it is subjected to a galvanizing process, which gives it great strength and durability.

Zinc plating involves the application of a layer of zinc, a chemical substance that provides protection against corrosion. The galvanizing process takes place at high temperatures, because zinc can only be worked hot.

The thicker the zinc layer, the better the material is protected.

The use of galvanized sheets for roofs provides extremely many advantages:

  • It has a very good mechanical resistance, coping with shocks, expansion and contraction caused by temperature variations and various chemical agents
  • It keeps its properties for periods of up to 50 years
  • Resist fire. Galvanized sheets are non-flammable, which guarantees that they will not burn or sustain fire during a fire.
  • It has an excellent quality-price ratio
  • It does not require additional care or repairs over time

3. Other elements that contribute to the resistance of the house, as well as to its easy operation

The foundation system. Made up of pillars with dimensions of 150 x 150 mm, it is easily mounted and ensures stability wherever the house is mounted;

Complete equipment. The house is supplied fully equipped, including bathrooms with storage spaces and built-in ceramic sinks, internal laminated wood stairs and furnished kitchens, provided with solid wood worktops.

Interior and exterior doors made of laminated wood;

Windows with insulating glass and laminated wood joinery;

Laminated wood floor, insulated on the inside with extruded polystyrene;

An architecture inspired by Scandinavian cabins, very pleasant from an aesthetic point of view.

The frame of the house is placed on the laminated wood floor and on the pillars with dimensions of 150 x 150 mm and height of 500 mm.

Technical details

  • The assembly of self-supporting insulating panels on a wooden base in the interlocking system is carried out by joining horizontally between the vertical beams that have a perfectly dimensioned space to take over the thickness of the used panel.
  • At the level of the windows and doors, the gaps are outlined by a wooden perimeter structure. The inclined roof panels are fixed in the same way as the horizontal ones.
  • At the joint area, near the nut and spring system, an adhesive recommended by the manufacturer is used, which is compatible with the two materials (XPS and wood), so as to increase the degree of sealing.

Why opt for modular houses with interlocking system?

These houses have many advantages, which any real estate investor must take into account:

  • It is installed in a very short time;
  • The interlocking system is very efficient and is based on long research and development studies;
  • The wood used is textured, the top layer being removed. This prolongs its life against external factors;
  • The textured aspect is also very pleasing from an aesthetic point of view, both externally and internally;
  • The paint applied to the wood is customized and is impregnated and applied by hand;
  • The house models we propose are designed to offer a maximum level of comfort. They are designed to ensure both sound insulation and efficient thermal insulation, regardless of the season. This level of insulation is achieved through several methods and materials, to ensure a pleasant and protected interior environment.
  • The foundations are built based on an innovative system;
  • The wooden materials used in the construction of the modular houses are dried in the oven for durability and strength. Thus, damage is avoided and the products last for a long time.
  • They have a very good resistance to earthquakes;
  • It resists fire very well, thanks to the fireproof insulating board, the impregnated paint and the specially developed wooden panels.

The modular houses built using the interlocking system are, therefore, a solution that ticks all the comfort requirements you might have: they are well insulated thermally and acoustically, they have the best quality carpentry and windows, they have an efficient sheet metal roof insulated galvanized, they are healthy for those who use them

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Bulevardul 1 Mai 346 H, Comuna Berceni, Ilfov

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*The information, sketches and images presented on this site are purely informative and are not binding, of any kind, for Sud Rezidential Real Estate SRL or the real estate developers and may undergo changes. The real estate developers reserve the right to make changes to the project

*We recommend that you carefully study the sketches, the real estate project, the location and the neighborhoods, at its location, before booking/purchasing any real estate.

*It is also necessary to check, in advance, the availability of residential units, the offers presented being offered only within the limit of the stock available at a given time;

*For exact information on the situation of a property or the existing stock, please request accurate information from the Sales/Developer Department.

*To the displayed price, the corresponding VAT rate is added, depending on the fiscal provisions applicable to natural or legal persons, as the case may be. The displayed price plus VAT at the standard or reduced rate is applicable only to the extent that the existing fiscal provisions regarding the VAT rate will be maintained until the date of full payment/handover of the modular house, otherwise the Buyer will fully bear any difference of VAT would be due additionally, depending on the legal and fiscal provisions applicable from the date of delivery of the modular house, respectively of its full payment and invoicing.

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