Glossar
Standing seam roof
If the roof slope is very shallow, tiles no longer offer optimal protection against rain. The standing seam roof offers high resistance, extreme longevity and protects the building fabric from external weathering. Damage during hailstorms is rare.
Zinc, aluminium, steel or copper are used for these roofs. They are attached in rows, i.e. sheet metal strips, from the eaves (drip edge) to the ridge (upper edge of the roof) and connected by a double standing seam or an angled standing seam. A double standing seam is used for roof pitches of less than 25 degrees. An angled standing seam, the simple fold over, between a roof pitch of 25 to 35 degrees.
These types of metal roofs may seem modern, but their tradition is more than 200 years old. By using different types of clamps and brackets, we can always respond to the material. In addition, our systems leave the roof cladding undamaged.
DIN EN 1991-1-3
What is DIN EN 1991-1-3?
This standard specifies the national principles for determining a snow load and its calculation. This standard does not apply to structures at a height of more than 1500 metres.
Unless otherwise specified, snow loads are classified as variable stationary actions according to EN 1990:2002, 4.1.1(1)P and 4.1.1(4). Other form coefficients are elevated solar thermal and photovoltaic systems as noted in Section 5.3.
Snow guard holder
What is a snow guard bracket?
A snow guard system consists of appropriate clamps for the system. Then snow guard grids, snow guard pipes or double pipes, snow guard base timbers or snow guard beams or even snow stoppers are used.
Why do I need a snow guard?
A snow guard mounted on the roof serves to prevent roof avalanches. Especially in higher and alpine regions, roof avalanches occur every year. Snow guard systems are used to protect people from the masses of snow.
What is a snow load?
Snow load (or snow pressure) is one of the climatic and variable effects on a building. It depends on the type and amount of snow. The location and also the roof construction as well as the shape of the building itself play an important role.
The snow load is calculated by specifying the pitch of the roof and depending on the snow load zone as well as the height of the location. You can easily use our form to calculate this. Enter all the information according to DIN EN 1991-1-3 and we will work out an installation proposal for you.
Snow weight
The density and weight of snow depend primarily on the air temperature. While it forms as hexagonal star-shaped crystals, it can already interlock during the fall. If layers of snow lie on top of each other, the layers change through recrystallisation.
| Snow type | Mass per m³ | Snow depth at 100 kg/m² |
| Dry, loose fresh snow | 30 - 50 kg | ca. 200 - 300 cm |
| Bound fresh snow | 50 - 100 kg | ca. 100 - 200 cm |
| Heavily bound fresh snow | 100 - 200 kg | ca. 50 - 100 cm |
| Dry old snow | 200 - 400 kg | ca. 25 - 50 cm |
| Wet old snow | 300 - 500 kg | ca. 20 - 35 cm |
| Perennial firn | 500 - 800 kg | ca. 12 - 20 cm |
| Ice | 800 - 900 kg | ca. 11 - 12 cm |
What is the effect of the snow load?
The snow load generally acts as a surface load perpendicular to the base surface.