Technical description of the prefabricated house Slovenia

Cross-section for Slovenia

Cross section of the wall of Slovenia


Design is made in a modular system, with the size of the module of 120cm, and application of prefabricated small panel elements manufactured by Ivanjica.

We strive to perform the design process in such a manner so the facility meets all the current regulations, functionality requests, as well as climate conditions of the 3rd zone.

During the designing process, as a starting point flat terrain was used, with the characteristics of the 3rd cat. soil


Upon staking out the scale of the building in a dedicated lot, cleaning of site and excavation of hummus in the layer of d=15cm, after which canals for the foundation beams. Those beams are being founded at the depth of 80cm, from the terrain level, and they are made of plain concrete MB15 35cm in width, under which a compacted gravel filling is being laid in the depth of d=10cm.

Plinth walls are made above the foundation beams, from the plain concrete MB 20, in double platting and finished in ring beams form reinforced concrete. The width of the walls is 25cm, while height is 45cm from the pavement level. Between the plinth walls the ground is being filled and thumped in the layers up to the necessary density and height.

Over the thumped ground in between the plinth walls, a gravel tampon is being layered in the d=10cm, to serve as the foundation to the ground concrete slab. This slab is being made from the plain concrete MB 20, d=10cm. Over the plinth walls as well as the ground slabs, hydro isolation from hot bitumen and tar paper in the layers 2+1 or kondor (heat sealing paper) in two phases. In the first phase (prior to the assembly of the building) hydro isolation in 50cm wide strips, while in the second phase (upon the assembly of the building), it is being done to the rest of the surface.

Around the building, 80cm width, d=10cm pavements are being fabricated, from plain concrete MB20, with simultaneous fabrication of cement screed and dilatation joints covered in sand and bitumen. Beneath the pavement a gravel tampon od d=10 is being layered.


Over the floor hydro insulation thermo insulation of floors from styrodur d=10cm is being layered down, together with PVC foil.  Over this foil, reinforced cement estrich d=5cm is being layered down, to serve as the foundation for laminate and tile flooring. In tile floorin, the estrich is being done simultaneously with the laying of the ceramic tiles. The reinforcing of the estrich is being done with wire mesh Q131.



Wall elements are fabricated in the workshop per project brief and being delivered to the construction site. Elements are being manufactured in the modular dimensions, 120x260 cm and 6ox260 cm, they can be either indoor or outdoor, filled or with fitted windows and doors, as per available space and the project itself.

Element of the elements is a wooden frame d=120 mm where on both sides the OSB –III slab d=10 mm is attached to. In between the slabs, into the wooden frame, pressed mineral wool d=120 mm is being fitted, together with PVC foil. For indoor elements, the construction is the wooden frame d=80mm where on both sides the OSB –III slab d=10 mm is attached to. In between the slabs, into the wooden frame, pressed mineral wool d=50 mm is being fitted.

Upon the assembly of the building, Isoterm lining d=80mm for the façade walls is fitted, while the indoor walls are being lined by drywalls d=12.5mm. The bathroom and kitchen elements are being lined in waterproof drywalls d-12.5mm. Together with final inner linings, filler and tach for joints are being provided. Bonding of the linings is being made with appropriate nails or clevis. The assembly of the elements and their combining into a whole is being made by wooden wall pieces, beams and coving strips, that are being inserted into previously molded clearances. Beams are previously treated with bitulit coating and are anchored for plinth walls. During the fabrication of the elements, plastic hoses for electrical installation and electrical boxes are being fitted.


Outdoor joinery is being made from German 6 chamber rolplast profile and roto fittings. The selection and the dimensioning of the holes is being made per room requisites, and in accordance with the project brief. 
Windows and doors are being fitted into the wall elements on the construction site, upon the construction, or roofing of the building. The windows can be singlewing, one sided and double.

Interior single wing doors are made of double layer plywood, full or double winged glassed

Main entrance door is secured with secure lock / with cylinder, while all others are equipped with plain locks.


Roof construction is being made out of mesh roof holders with 25° incline. Those holders are made of dried white wood I/II class, all in accordance with the structural analysis. The assembly of the holders is done by wall construction at modular distance and it is being anchored by metal joints. Roof holders are interconnected by roof boarding d=24mm in roof level, by ceiling boards at the ceiling level and vertical bracing, thus providing structural stability of the roof and the building itself. Over the roof boarding, we are laying down tar paper, longitudinal and traverse profiles 24/48 mm, thus providing ventilation beneath the roofing. Roofing is being done by clay pantile M222 manufactured by “Polet” company Novi Becej. The cornice of the roof is lined with white wood plank d=20mm and the soffits are covered in aluminium paneling over the planks 40/48mm.


Ceiling construction comprises of the capping beams, insulation, moisture barrier and ceiling boarding. Under lower belts of ceiling joints, capping beams made out of beams in diameter 48/4o mm is assembled, over which (from the bottom side) a moisture barrier is being laid, made out from PVC foil and drywalls d=9.5mm. On the other side, a thermo insulation made out from pressed mineral wool d=150mm is put. The capping beams and the ceiling boarding are tied with appropriate nails. Together with the ceiling boarding a filler and the tapes for joints are delivered.


All posts, fences and suspended beams are made out of high quality white wood as per the project brief.



Glazing of the windows with low emission glass d=4+16+4 mm.
Indoor glazing is being done with straight see thru glass d=4mm.


Water drains of standard diameter with optimal number of drain pipes are fitted onto the building. The drains are fabricated from aluminium tin d=0.70mm in color of the Buyer’s choosing. Roof apron flashing, chimney, gable end (barge board) is lined with aluminium tin d=0.70mm in color of the Buyer’s choosing.


A floor out of laminate with foil and side bars against the wall is made, or a floor made out of glazed ceramic tiles with joints, depending on the purpose of the room.

In the entrance corridor, flooring is made out of non-glazed ceramic tiles.


Ceilings are colored in white semi-dispersion paint after the covering and filling out of the drywall joints and connections with the filler, bandage tape and skim plasters. All interior drywalls are colored with the semi-dispersion paints upon finishing necessary preparatory works as previously explained in the case of the ceilings. The woodwork is covered in sandolin paint. Allinterior surfaces are made in two coatings. The selection of the appropriate colors is supervised by the designer before transporting the colors to the construction site. Bathroom walls are covered in ceramic tiles manufactured in Serbia from the floor to the ceiling.


Outdoor surfaces made out of isotherm are being treated by acrylic façade, while the visible surfaces made out of wood are colored by sandolin paint. Plinth walls are colored in façade color.


By project brief, plumbing and gutter works, as well as the electrical works are envisaged, and they are covered in special segments of the main project. The project brief also covers electrical installation.


Every alternation of the project that impacts the construction of the building can be made only upon full approval with the designer. Depending on the proposed changes, the total construction price can vary.