A parapet usually needs a cover plate

The crown of the parapet is potentially at risk from precipitation and wind. In addition, there is considerable heating in sunshine or frost in winter. Sheets are very suitable for a parapet, as long as the cover sheet does not act as the crown of a parapet. The joints between the individual sheets are the weakest link and require optimal assembly.

Except for parapets, the most practical crown cover

If an attic is erected and installed as a roof border, metal sheets are ideal. It must be noted that in an attic that also serves as a parapet, such as around a roof garden, sheet metal has the following properties, which can be disadvantageous:

  • Strong heating in sunlight and risk of burns
  • Possibly sharp corners and edges with risk of injury
  • Sensitivity to scratches, which can lead to corrosion in steel
  • Copper and zinc wash up in beds and damage sensitive plants

Concrete, ceramic or natural stone are more suitable for covering an attic as a parapet. If the structure of the parapet corresponds to a balustrade and has the character of a railing, a cover made of sheet metal is also an aesthetically unfavorable solution.

Materials and materials

If a parapet is clad with sheet metal, corrosion resistance is a basic requirement. The following alloys, materials and coatings are used:

  • aluminum
  • stainless steel
  • copper
  • Copper zinc
  • Titanium zinc
  • Galvanized steel
  • zinc

The durable and dimensionally accurate sealing of the joints between the individual sheet metal elements is very important. Depending on the type of metal, they must be soldered, welded or closed with connecting lips. As the temperature differences can be up to eighty degrees Celsius over the course of the seasons, regular seam inspections are essential.

Methods of assembly

The attachment of the parapet sheet is mostly realized with slide-in and plug-in systems. Drilled holes are potential damage points that can be dispensed with with the brackets and rails installed underneath.

The following video shows an example of how cover plates are mounted on the parapet:

Tips & Tricks You must meet the DIN EN 1991-1-4, DIN 18531 and DIN 18339 standards when installing the cover plate on your parapet. The regulations of the German roofing trade provide further implementation rules. Slope, protrusion as dripping noses and suitable materials are defined in the regulations so that they can be legally resilient.