Roofing screw for metal base 4,8 mm

  • 500 бр
  • 1000 бр
Clear
145.69 BGN1,796.45 BGN

Roofing screws for metal are part of the membrane mechanical fastening  system for flat roofs when the roof base is corrugated metal sheet.

They have a special anti-corrosion coating that provides the highest degree of protection according to DIN 50018 S2.0L-15 Kesternich cycle. This cycle simulates an SO2-saturated atmosphere producing acid rain.

While the Kesternich test system requires relatively sophisticated equipment, a "home" test can use automotive battery acid. A zinc-coated screw placed in it "boils" and rusts before your eyes, and a specially coated screw will start to form rust spots after 3-4 days.

Certificates

CE
ЕТА 06/0007
FM

Images

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