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Field report: Nosta Logistics Stadthagen solar roof

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Key facts: Solar roof waterproofing

Location
Stadthagen
Completion
2009
Area
25,000 m²
Authorised Contractor
Ahrens Solartechnik GmbH & Co. KG, Bückeburg

Nosta Logistics Stadthagen solar roof

Germany’s largest roof-mounted system equipped with Kyocera high-performance solar cells achieves a rated output of around one megawatt. Skilled workers from Ahrens Solartechnik GmbH & Co KG erected the photovoltaic system on the roof area of Nosta Logistics in Stadthagen, Lower Saxony, measuring approximately 25,000 square metres. Since October 2009, the modules have been exposed to the sun and wind and produce environmentally friendly electricity. The weather-resistant Triflex ProDetail ensures that the penetrated roof skin in the connection areas of the 600 steel columns supporting the modules is waterproofed securely in the long term. The resistant resin forms an underflow-proof seal on the supports, which protects against penetration from harmful moisture in the long term.

Refurbishment requirements

  • Load-bearing capacity despite the extreme weight of the 600 steel columns
  • Weather-resistant and safe from water penetration
  • Sealing of roof penetrations
  • Quick and durable refurbishment
  • Flexible, even with strong movement

Refurbishment steps overview

  1. Substrate pre-treatment: cutting open the plastic roofing membranes and removing the insulation
  2. Fixing the supports to the substrate
  3. Adaptation of insulation and plastic sheeting
  4. Masking the interfaces with stone adhesive tape
  5. Cleaning the steel columns with Triflex Cleaner and subsequent sanding
  6. Fleece-reinforced detail waterproofing with Triflex ProDetail

THE PLANT IS GERMANY’S LARGEST ROOF-MOUNTED PLANT WITH KYOCERA MODULES AND DELIVERS 920,000 KILOWATTS OF ELECTRICITY PER YEAR. THE QUANTITY PRODUCED, WHICH IS CONSUMED CENTRALLY ON SITE,
IS SUFFICIENT TO SUPPLY 260 SINGLE-FAMILY HOMES AND REDUCE ANNUAL CO² EMISSIONS BY AROUND 700 TONNES.

Dieter Ahrens, Managing Director of Ahrens Solartechnik

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