For successful, professional and error-preventing mounting, a matching substructure is part of the sheet roof. In case of false construction, there is noise due to rain and wind and often for condensation. Generally, if possible, a ventilated construction should be sought.
General requirements for each sheet metal roof
Sheet metal roofs are available in the following three versions and shapes:
1. Level sheet metal tapes, tracks or plates, with standing folding together
2. Trapezoidal or corrugated sheet
3. Tin pans or shingles
In addition to the three differently shaped sheets, the mounting type and substructure depends on the type of roof. Flat roofs require a different union building as a diagonal roofs. However, there are some basic requirements for the substructure, which are the same for all sheet metal types.
- To avoid problems with condensation, a ventilated construction should be done
- As an alternative to ventilation, a Untervannbahn can be laid
- Special nonwovens can accommodate both condensation and sound insulating
- The distance and the number of attachment points should be calculated with eight to twelve screws or four to six brackets
Specific attachment of the differently shaped elements
Thanks to their form, trapezoidal and corrugated sheets can be screwed to surface-locking surfaces such as material plates. Here you should always be used a Untervannbahn. The lateral openings must be open and remain to guarantee a partial ventilation.
Tin pans and shingles are used only on inclined roofs. They can be attached to both area-locking surfaces as well as on a length.
Sheet metal railways, bands and plates should always be placed on a length, preferably made of wood,. The latitude consists of two levels and forms a mounting grille. For diagonal roofs, horizontal roof slats can be sufficient.
The substructure for flat roofs must ensure a gradient or inclination of one to two percent (one to two centimeters per running meter). On wooden planes can be worked with wedges. Trapezoidal sheet needs a minimum gradient of ten percent.Tips & Tricks also think of the subsequent damper to get the ventilation. For example, if there is not enough space for the insulation material between the rafters, you must disassemble the sheet and double the rafters.