The type of roofing/cover depends on the purpose of the structure. It needs to satisfy all criteria for static, energy saving, sound isolation, fire resistance, lifetime, aesthetic and economic needs.
Most often used types of roofing/cover are: trapezoidal sheets, „sandwich“ panels and polycarbonate (lexan) sheets. Roofing can also be done using: waved steel sheets, waved bitumen sheets, polyester sheets and waved polycarbonate and acryl sheets.
TRAPEZOIDAL SHEETS
Trapezoidal sheets can be made out of aluminium or steel sheets. Steel trapezoidal sheets can be galvanized or galvanized and painted. Trapezoidal sheets are made using sheets of varying thicnesses, trapeze heights and spacings, all of which affect it's bearing capacity. Sheets with larger trapeze hights are mostly used as roofing (on their own or as a top layer of a panel), while sheets with smaller hights are used as wall covers, barriers, ceiling covers or bottom parts of a panel.
Advantages of trapezoidal sheets:
- high material strength and resistance
- extremely small weight
- beautiful design
- long lasting
- no maintenance needed
- custom length
- cheaper than other options
- color options
Trapezoidal sheets are ideal for roofing and as wall covers on structures with little or no demand for thermal isolation.
ROOF TILE-SHAPED SHEETS
Roof tile-shaped metal sheets look like traditional roof tiles, but they have all the advantages of trapezoidal sheets. These sheets are an ideal alternative for traditional tiles on all kinds of structures and buildings.
SANDWICH PANELS
Sandwich panel is made by placing a mineral wool or polyutherane core between two steel or aluminium sheets. In most cases, roofing panels have a trapezoid top sheet and straight bottom sheets with slots. Panels for wall covers are made of two straight sheets with slots. Depending on the aesthetic and mounting location needs, top sheets can be roof tile-shaped or straight.
With a variety of colors and types, sandwich panels are becoming more popular due to their great mechanical and physical characteristics. They are mostly used for industrial facilities, warehouses, modern buildings, hotels, garages, canopies etc.
Advantages of sandwich panels:
- great thermal characteristics
- fire resistance
- good sound isolation
- high material strength and resistance
- beautiful design
- long lasting
- no maintenance needed
- small weight
- color options
Construction sandwich panels are made on the project location and are mostly made of bottom trapezoidal sheet with lower trapezes, moisture insulation (recommended), Z spacer, mineral wool or styrofoam, insulation foil and top trapezoidal sheet with higher trapezes.
Some of the newer roofing solutions use a combination of special deeply profiled trapezoidal sheets and roofing sandwich panels, with a goal of reducing the number of beams, with distances of up to 9m between them. As a result, there is more space available, construction time is shorter and less energy is needed for heating.
ROOF TILE-SHAPED SANDWICH PANELS
These covers are irreplaceable in protected areas where normal trapezoidal sheets and panels should not be mounted. They have all the advantages of both the sandwich panels and roof tile-shaped sheets.
POLYCARBONATES
In modern construction, polycarbonate sheets are becoming more popular, both for outside use (roofing, covers) and for interior use. They are mostly used for: roofing for pools, canopies, greenhouses, winter gardens and as a secondary cover. Polycarbonate sheets are made in varying thicnesses (4 - 35 mm) and structure types - homogenous (0.8 - 12 mm), dual layer (4 - 30 mm), triple layer (16 - 20 mm), quintuple layer (16 - 25 mm), M (16 mm) and XX (32 and 35 mm)
Advantages of polycarbonates:
- translucence
- attractive design
- high material strength
- extremely small weight
- resistant to impact and hail
- high bending capabilities
- great thermal characteristics
- highly effective UV protection
- color options
- long lasting
