Snow guard system
A snow guard system holds the sliding snow in the eaves area or, in the case of longer roofs, on the roof surface. Especially in snowy winters, there is a risk that large amounts of snow will slide unpredictably off the roof and cause property damage and personal injury. To prevent such dangerous roof avalanches , different snow protection systems can be installed on roofs .
species
- A snow guard ensures that the snow is dammed in the eaves area of the roof. During assembly, it must be ensured that both the material and the anchoring option in the substructure can withstand the enormous surface and punctual pressure loads caused by snow. Snow guards are the most commonly used variant for securing snow.
- In addition to snow guards , snow guard bars / logs or snow guard tubes represent a more stable safety precaution, especially for snowy areas. Like snow guard bars, snow guard bars / logs or snow guard tubes are attached to the eaves of the roof to catch the sliding snow.
- A snow guard pan is used to securely attach snow guard grids or snow guard bars to roof tiles. It is usually adapted in shape and color to the roof tiles used.
- Snow catcher hooks are distributed throughout the roof area and prevent the snow from sliding off. The snow catcher hooks the snow on the roof when there is a lot of snow, so that less snow falls on the snow catcher system, e.g. B. the snow guard acts. Snow hooks can be used alone or in combination with snow guard systems in the eaves . The hooks can be attached to almost all types of roof tiles and roof stones and, in combination with snow guard systems, offer optimal protection, especially for roofs with a high angle of inclination.
- Another way to avoid roof avalanches is so-called roof heating . They ensure that the snow melts and that no high snow loads or roof avalanches can occur. However, roof heating is more likely to be used in very special areas of application.
Legal regulation
In general, a house owner in Germany is not obliged to equip his roof with a snow guard system. In order to fulfill the general traffic safety obligation, however, he must take all reasonable precautions to avoid damage from roof avalanches. Should there be damage due to a snow slide, the house owner is 50% liable. Roofs with an inclination angle of over 50 degrees must be secured separately, otherwise the house owner is fully liable for any damage. In addition, the safety requirements are regulated in the state building regulations, which sometimes differ from one another.
Snow load calculation
In general, Germany can be divided into several snow load zones depending on the geographical location. The higher a building is, the higher the permissible snow load , which is calculated according to the ZDVH regulation for determining snow loads based on the new DIN EN 1991.
Web links
Individual evidence
- ↑ Tenancy Law Lexicon, Dachlawine November 22, 2012
- ↑ Bundesverband Wintergarten eV, judgments and legal information on slipping snow loads (PDF; 187 kB) November 22, 2012
