Roof

 

The roof of the prefabricated house is made through the mounting of prefabricated panels by using a construction crane. Their structure and  contour  are  determined  for  each individual architectural design. Only after the assembly of all roof panels, the finishing coatings are applied. This is done for the formation of a continuous waterproofing barrier.

 

 

 

Roof panels consist of a main bearing structure, OSB plates or hydrophobic plywood and roof covering. The wind and snow load of the region is taken into account in the calculation of the roof structure.

The position of the thermal insulation layers is selected depending on the function of the under roof space. Most often the thermal insulation of roofs is laid horizontally above the level of the suspended ceiling of plasterboard. Therefore, if the under roof space will be occupied, it is provided that this insulation should be installed over it - in the roof panels.

 

 

 

The slope of the roof determines the type of the roof covering. Two main factors determine the selection of the slope:

 

- Architectural image

For the traditional type of Bulgarian house it is preferable to apply the so-called sloping roof combined with the impact of the other parts of the house. The so-called flat roof is applied in modern solutions (with simple rectangular volumes).

 

- The price of the system / material

 

The different roof coatings determine the differences in the elements used below them. For this reason, it is not fair to talk about a separate price for the finishing roof coating, but rather about an entire cost of the roof.

 

You can accept the following gradation according to the overall cost of the roof:

 

- with corrugated glass fibre boards - cheapest, budget solution

 

- with bitumen roof tiles

 

- with ceramic roof tiles, with concrete roof tiles, flat roofs - almost the same price

 

- with tin tiles - they vary in price depending on the complexity of the contour of the roof (for more complex contours the amount of input material increases significantly, and hence the price).

 

 

 

The drainage system depends on the type of roof.  With flat roofs, mostly internal drainage is used (roof outlets and internal gutters - hidden in the walls and connected to the sewerage   system   of   the   building).   With sloping roofs, external drainage is used (gutters  along  the  contour  of  the  roof  and drain  pipes  attached  to  the  façade  -  with direct drainage on the surrounding surface covering).