Losange system

Losange system

The lozenge system is a way to cover both big and small slanted or upright surfaces, like roofs. To use this system, the roof should have a minimum slope of 25° or 18° when the pointy part of the lozenge is connected. The standard lozenge system has small, bent plates that fit together like hooks. The square shape is the most common type of lozenge, but sometimes people also use a rhombus. Also look at: Damp-tight discharge system. Ventilated discharge system

Benfits

  • Versatility in Surface Coverage: The lozenge system provides effective coverage for both large and small slanted or upright surfaces, offering a versatile solution for various architectural elements such as roofs.
  • Adaptable to Varied Slopes: With a minimum slope requirement of 25° (or 18° with connected pointy parts), the lozenge system is adaptable to different roof slopes, ensuring its applicability across a range of architectural designs.
  • Interlocking Design for Secure Fit: The standard lozenge system employs small, bent plates that interlock like hooks, ensuring a secure and reliable fit. This interlocking design not only enhances durability but also simplifies installation and maintenance.
  • Effective for Curved Surfaces: Lozenges excels in covering surfaces with slight curvature, creating a visually appealing pattern of flat surfaces. This makes the system a preferred choice for projects where the architectural elements exhibit a degree of curvature, providing a seamless and aesthetic solution.

Drawings and Tables

lozenge size cutting size Number/m2
450 x 450 mm

500 x 500 mm

Approx 5,6
280 x 280 mm

330 x 330 mm

Approx 15,3
200 x 200 mm
250 x 250 mm
Approx 32
Tabel 5.3.1 Dimensions of lozenge, square model
LOOSE WIDTH DIMENSION 'B' CUTTING SIZE NUMBER/M2
200mm*

250mm

approx. 25.6
250mm*

300mm

approx. 15.3
280mm*
3300mm
approx. 11.9
* other dimensions are possible Table 5.3.2

Specification of the parts

A schematic representation of the losange system is shown in Figure 5.3.1. In addition to the standard loose ends, other dimensions are also possible. The square lozenges are offset by 25 mm as shown in figure 5.3.2.

 

Figure 5.3.3 A shows the half loose angle with a bottom termination and figure 5.3.3 B shows the half loose angle with a top termination. Dimensions and material thicknesses are the same as the entire lozenges. Instead of a sliding clip, a soldered clip can also be used for a half loose tube with a top termination.

 

Table 5.3.1 provides an overview of the standard square lozenges, table 5.3.2 of the standard diamond-shaped lozenges.

 

Sliding cleat , 70 mm x 50 mm
Material thickness equal to loosenge. The sliding clip functions as a support clip. The clip can be made by the zinc worker himself.

 

Soldered clip
Width: 50 mm wide, length approximately 100 mm, depending on location and space for mounting on the surface. The clip can be made by the zinc processor himself and soldered to the loosenge.

 

Profiles
Foot molding, connecting profiles, etc. depend on the dimensions on site for their dimensions and can be made by the zinc worker himself or are available in custom lengths.

Support
In a ventilated construction, the losange roof is fully supported by a roof boarding consisting of unplaned
wooden parts of at least 23 mm thick, without tongue and groove, applied with gaps of at least 5 mm. Attachment
using hot-dip galvanized mounting materials with a zinc layer thickness of at least 20 μm or stainless steel AISI 304

 

Installing roof coverings
The following description concerns the installation of lozenges with a soldered clip on the top corner and two
support clips on the two top sides. Fastening is carried out using hot-dip galvanized mounting materials with
a layer thickness of at least 20 μm or stainless steel AISI 304. The mounting of the brackets is carried out from bottom to top.

 

Bottom connection or drip edge foot connection
First, a zinc sheet foot rail is mounted (place the clips under the wire for this). Crochet the half loose ends into this and
then continue with whole loose ends (figure 5.3.5).

 

Marking
Losanges are applied with a small amount of play. Marking is necessary to obtain a straight line pattern.
Start marking from the center of the roof surface and apply stain lines every three steps.

 

Top connection, ridge connection.
With a top connection, preferably end on half lozenges. If this is impossible, cut the partial length to size and add a hook edge at the top. These partial or half lozenges are provided with a hooked clip or soldered clip for attachment to the wallboard. Then finish with the top molding. Figure 5.3.6 shows an example of a ridge finish.