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ROOF AREA HEATING Safety, comfort and durability.

ETHERMA DSN – Roof heating mat

The DSN heating mat consists of a glass fibre mesh onto which a heat conductor with a UV-resistant outer insulation is sewn (for foil and flat roofs). This is a safety measure to prevent damage to the roof, roof gutters and building from snowfall.
The heating mat is particularly easy to install and secure to the roof because of the glass fibre mesh. Due to the advanced stitching technology with PTFE thread, a completely reliable layer and the stability of the heating mat are guaranteed. All components are 100% UV-resistant.

Benefits of this product

  • Planning of the project and custom-made product

  • Connection cable (no plug) custom-made

  • Simple installation thanks to resilient fibre-glass armoured mesh

  • Stable surface performance

  • UV- and ozone-resistant, extremely weather-resistant

  • Resistant to acids and bases

Technical data
Voltage: 230 V, 400 V
Output: 175 W/m²
Special output: 200 W/m²
Nominal limit temp.: up to 105 °C
Min. temp. of installation: -5°C
Max.perm. bending radius: 5 d
Outside diameter: 7 mm
IP rating: IP X7
Connection cable: 1 x 3 m; 3 x 1,5 (2,5) mm²
Weight: 900 g/m²
Certification: CE compliant
Attachment

  • Film and sheet-metal roofs: Permanent spot adhesive bonding

  • Shingle roofs: Additional mechanical attachment

Note

On certain specific roof geometries, ready-made heating systems cannot be used in certain cases - it is however still possible to freely lay heat conductors or heating strips in order to ensure the drainage of the melted water to the roof gutter and hence down the downpipe to the ground. The ETHERMA planning team will provide custom advice in these cases, and find the appropriate solution.

ETHERMA NOTE:
- All our access lines are produced custom-made.
- Upon request, we will be happy to take care of the installation and maintenance of your roof area heating.

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CLEVER AND FULLY AUTOMATED CONTROL.

Efficient roof area heating heats only when the temperature is low enough, and from certain humidity levels. This means that the heating stays off in dry cold spells, as well as during rainfall at sufficiently high temperatures. In this way, you can heat efficiently with a full-automated control system which simultaneously monitors temperature and humidity.

PROTECTS THE STRUCTURE.

Large amounts of snow can overload roof areas, which can lead to damage to the building itself. Roof area heating is often the easiest solution without having to resort to expensive structural enhancements or other measures.

BE IT A PAVILION ROOF OR EXTENSION.

Extensions are primarily at risk from buckling due to large amounts of snow on critical points. Roof heating films melt this snow safely and reliably, and hence protect the roof as well as the structure of the building.

LOW TILT ANGLE OF THE ROOF.

Depending on the angle of inclination of the roof different heating systems are necessary. On roofs with a low angle of inclination, the risk of snow slipping in larger quantities and collecting in the lower area is rather low. Therefore, it is sufficient here to remedy the situation by heating the gutter and downpipe to ensure the free flow of melt water.

STRONG TILT ANGLE OF THE ROOF.

On roofs with high inclination, snow guards are to be installed on the one hand, in order to avoid a sudden blockage of the entire gutter area by rapidly slipping snow. Furthermore, it makes sense here to heat the gutters and downpipes as well as the entire roof area below the snow guard grid.

FLAT ROOF.

In the case of flat roofs, the downpipe inside the building and its narrower catchment area (approximately 1m circular) must be heated in the area of the unheated processes in order to prevent any damage to the roof membrane due to ice formation.

In areas with particularly heavy snowfall, it may be necessary to heat the entire roof surface in order to protect the roof from the expected roof load.

INTELLIGENT CONTROL.

An intelligent roof control system records the temperature and humidity of the surface - drawing the right conclusions from it, thus ensuring fully automatic, safe and operating costs-optimized use of the system. The sensor records the current temperature and the beginning of snowfall. In order for the heating to be switched on, the set temperature must be undercut and at the same time the set humidity must be exceeded. The energy savings compared to a thermostatically controlled system is even up to 70 %.

CASE STUDY

SEMBELLA PLANT, TIMELKAM ROOF AREA HEATING

THE INITIAL SITUATION

The Sembella plant in Timelkam features a particularly large flat roof area with a relatively "soft" surface. Snow can potentially "creep" under the roof, melt there and hence cause water damage to the interior of the building.

THE ETHERMA SOLUTION

In order to safely prevent water damage in the production areas, a web of ETHERMA DAB film heating mats was laid - these feature a particularly fast defrosting response, are very robust and their smooth surface also prevents the snow from accumulating. In addition, the relatively "soft" bitumen roof is not damaged due to any heat conductors which may be installed.

WIENERBERGER PLANT, STRAUBING ROOF AREA HEATING

THE INITIAL SITUATION

The Wienerberger plant has a large photovoltaic system, which causes heavy snow slides. This resulted in large accumulations of snow and hence occasional structural overloads. The insurance company was unwilling to pay for such damage, which meant that a solution needed to be found, and the snow removed from these areas. The custom ETHERMA heating solution guarantees the safe melting and final drainage of the water without any ice build-up, until it is drained into the soil.

THE ETHERMA SOLUTION

In order to prevent accumulations of snow, the surfaces of areas at risk were covered with custom-made DSN heating mats. These ensure even defrosting and thanks to their stitching technology with Teflon thread, are particularly robust and weather-resistant. The snow melted in this way is directed safely to the soil, thus ensuring that there is no further build-up of ice in the downpipes, as the water is kept warm thanks to the EGT-36 self-regulating heating strips.

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anfrage.at(kwfat)etherma(kwfdot)com Harald Breckner
Technical consulting
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