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Location of Fasteners at Supports
Corodek® may be fastened to timber or steel supports
by conventional crest fixing. There should be 5 fixings
per sheet at ends and end laps for normal conditions
and 3 fixings per sheet at intermediate supports. For
severe exposure conditions, higher wind design pressures
can be achieved by use of 5 fixings per sheet at intermediate
supports.
Fixing Fastener Location
Softwood
Roofing: T17 No. 12 x 50mm self drilling wood screw,
Hexhead with neoprene washer
Cladding: T17 No. 12 x 25mm
Hardwood
Roofing: T17 No. 12 x 45mm self drilling wood screw,
Hexhead with neoprene washer
Cladding: T17 No. 12 x 25mm
Steel Supports up to 5mm Thick
Roofing: “Teks” self drilling screws No.
12 x 35mm, Hexhead with neoprene washer
Cladding: T17 No. 10 x 16mm
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